Here is my weekly weather quiz question. What is “Upwelling?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

________________

 

An upper level low (Shaded “U” shape in blue arrows) has taken over control of our weather. A frontal system can be seen moving through the Pacific Northwest by next Wednesday. As much as we need some rain I’m sure most of us are hoping that it is dry and warm and dry for the long Labor day weekend September 3rd through 5th, but it is too soon to make that prediction final. So far it does look like sunshine and warming temperatures for the holiday weekend. The college football season gets under way with the Beavers playing in Minnesota tonight and the Ducks at home Saturday afternoon.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 20 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 18 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

 

Advisories:

• *A health advisory has been lifted for the Ross Island Lagoon and the mouth of the lagoon as it connects to the Holgate Channel. Ross Island Lagoon is located about one river mile south of downtown Portland in Multnomah County. Water monitoring has confirmed that the number of blue-green algae cells as well as levels of associated toxins are below guideline values for human exposure.
• A health advisory remains in effect for water contact at Nye Beach located in Lincoln County due to higher than normal levels of fecal bacteria. Contact with the water can result in diarrhea, stomach cramps, skin rashes, upper respiratory infections and other illnesses.Direct contact with the water should be avoided in this area until the advisory is lifted, especially by children and the elderly who may be more vulnerable to waterborne bacteria. Visitors should avoid wading in nearby creeks, pools of water on the beach, or in discolored water, and stay clear of water runoff flowing into the ocean.
• A health advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.

 

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Cloudy with a (40%) chance of evening rain, showers likely (70%) late tonight (0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of showers Friday AM, a slight (20%) chance of afternoon showers, just mostly cloudy and cooler Friday night and Saturday AM, partly cloudy and a bit warmer Saturday afternoon and in the evening, mostly cloudy late Saturday night,
• A mix of clouds and sun Sunday, partly cloudy in the evening, then mostly cloudy late Sunday night.
• lows 53-46 highs near 72.
• A mix of clouds and sun Monday (Labor Day), mostly cloudy with a slight (20%) chance of showers at night,
• Mostly cloudy and a bit warmer with slight (20%) chance of showers Tuesday through Thursday AM, then partly cloudy and a bit cooler with a slight (20%) chance of showers Thursday afternoon.
• highs 74-77 cooling back to 74 Thursday lows 47-50. (seasonal averages high 80 low 50)

_____

Your College Football Forecast:

Ducks vs UC Davis at Autzen Stadium – Saturday September 3rd- Kickoff 2 PM PDT: Partly cloudy 70 degrees warming to 72 degrees then slow cooling as the game ends, Wind NW 5-10 mph.

_____

Beavers vs Minnesota at TCF Bank Stadium Minneapolis, MN – This evening– Kickoff (8 PM CDT) 6 PM PDT: Clear 68 degrees and cooling to 62 as the game ends, Wind E 5-10 mph.

________________

 

 

Forecast for Roseburg:

• Mostly cloudy with a slight (20%) chance of isolated showers tonight (under 0.10 in. of rain possible) and Friday, partly cloudy in the evening, mostly cloudy late Friday night,
• Mostly cloudy Saturday AM,  just partly cloudy Saturday afternoon through Sunday night.
• lows 55-47 warming to 50 Sunday night highs near 77.
• Partly cloudy and a bit warmer Monday (Labor Day), becoming mostly cloudy with a slight (20%) chance of showers late Monday night through Wednesday, just mostly cloudy Wednesday night and Thursday AM, then partly cloudy Thursday afternoon.
• highs 77-80 lows 52-54. (seasonal averages high 82 low 54)

 

________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with a (30%) chance of scattered showers tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of isolated showers Friday, just mostly cloudy Friday night and Saturday AM, partly cloudy in the afternoon and evening, mostly cloudy late Saturday night,
• Mostly cloudy Sunday AM, partly cloudy in the afternoon, then mostly cloudy Sunday night.
• lows 53-50 warming to 52 Saturday night cooling back to 50 Sunday night highs 66-63.
• Mostly cloudy Monday (Labor Day), then mostly cloudy with a slight (20%) chance of showers late Monday night through Wednesday AM, mostly cloudy Wednesday night through Thursday AM, then partly cloudy Thursday.
• highs 63-66 lows near 52. (seasonal averages high 66 low 52)

 

________________

 

Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of evening rain, showers likely (70%) late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of showers Friday and a bit cooler, just mostly cloudy Friday night,
• Partly cloudy and a bit warmer Saturday, partly cloudy with a slight (20%) chance of showers Saturday night,
• Then partly cloudy and a bit warmer Sunday and Sunday night.
• snow level 8,000 ft. tonight, 7,500 ft. Friday, free air freezing level 9,000 ft. Friday night and  Saturday, snow level above 8,000 ft. Saturday night, free air freezing level 9,000 ft. Sunday and Sunday night.
• lows 40-35 highs 56-60.
• Partly cloudy and a bit warmer Monday (Labor Day) and Monday night,
• A mix of clouds and sun with a slight chance of showers and a bit cooler Tuesday afternoon, partly cloudy with a slight chance of evening showers, mostly cloudy with a slight (20%) chance of showers late Tuesday night,
• A mix of clouds and sun with a slight (20%) chance of showers Wednesday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late Wednesday night,
• Then a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Thursday.
• free air freezing level 7,500 ft. Monday, 10,000 ft. Monday night, then snow level above 8,000 ft. Tuesday through Thursday.
• highs 65-60 lows 36-40.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

_______________

Here is my weekly weather quiz question. What is “Upwelling?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

________________

 

An upper level low (Shaded “U” shape in blue arrows) has cooled us down with increasing onshore airflow a second and stronger trough follows close behind. It will continue to slide  eastward through the Pacific Northwest. Another frontal system can be seen approaching the Pacific Northwest by next Wednesday. As much as we need some rain I’m sure most of us are hoping that it is dry and warm for the long Labor day weekend September 3rd through 5th, but it is too soon to make that prediction final. So far it does look like sunshine and warming temperatures for the holiday weekend.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 35 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 20 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

 

Advisories:

• *A health advisory has been lifted for the Ross Island Lagoon and the mouth of the lagoon as it connects to the Holgate Channel. Ross Island Lagoon is located about one river mile south of downtown Portland in Multnomah County. Water monitoring has confirmed that the number of blue-green algae cells as well as levels of associated toxins are below guideline values for human exposure.
• A health advisory remains in effect for water contact at Nye Beach located in Lincoln County due to higher than normal levels of fecal bacteria. Contact with the water can result in diarrhea, stomach cramps, skin rashes, upper respiratory infections and other illnesses.Direct contact with the water should be avoided in this area until the advisory is lifted, especially by children and the elderly who may be more vulnerable to waterborne bacteria. Visitors should avoid wading in nearby creeks, pools of water on the beach, or in discolored water, and stay clear of water runoff flowing into the ocean.
• A health advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.

 

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• A mix of clouds and sun and a bit cooler with a good (50%) chance of rain this afternoon (under 0.10 in. of rain possible), a (40%) chance of evening rain, showers likely (70%) late tonight (0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of showers Friday, just mostly cloudy late Friday night and Saturday AM, partly cloudy and a bit warmer Saturday afternoon, partly cloudy in the evening, mostly cloudy late Saturday night.
• highs 72-74 lows 53-48.
• Partly cloudy and a bit warmer Sunday and in the evening, mostly cloudy late Sunday night,
• A mix of clouds and sun Monday (Labor Day), partly cloudy at night,
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Tuesday afternoon, mostly cloudy with slight (20%) chance of evening showers, a (40%) chance of showers late Tuesday night,
• Mostly cloudy with a (40%) chance of showers Wednesday AM, then a slight (20%) chance of showers late Wednesday afternoon.
• highs 75-77 lows 47-52. (seasonal averages high 81 low 50)

_____

Your College Football Forecast:

Ducks vs UC Davis at Autzen Stadium – Saturday September 3rd- Kickoff 2 PM PDT: Partly cloudy 72 degrees warming to 74 degrees then slow cooling as the game ends, Wind N 5-10 mph.

_____

Beavers vs Minnesota at TCF Bank Stadium Minneapolis, MN – Today September 1st – Kickoff (8 PM CDT) 6 PM PDT: Clear 68 degrees and cooling to 62 as the game ends, Wind ESE 5 mph.

________________

 

 

Forecast for Roseburg:

• Mostly cloudy and a bit cooler today with a (30%) chance of isolated showers, a slight (20%) chance of showers tonight (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with a sight (20%) of showers Friday AM, just partly cloudy in the afternoon and evening, mostly cloudy Friday night and Saturday AM, then just partly cloudy Saturday night.
• highs near 77 lows 54-47 warming to 50 Saturday night.
• Partly cloudy and a bit warmer Sunday, mostly clear in the evening, partly cloudy late Sunday night and Monday AM (Labor Day), then mostly cloudy with a slight (20%) chance of showers Monday afternoon through Wednesday.
• highs 77-82 cooling to 78 Wednesday lows 50-56. (seasonal averages high 82 low 54)

 

________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy and a bit warmer today with a slight (20%) chance of isolated afternoon showers,  cloudy with a (30%) chance of showers late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of coastal showers Friday while mostly cloudy with a slight (20%) chance of AM showers inland and partly cloudy Friday afternoon, mostly cloudy Friday night and Saturday AM, then partly cloudy in the afternoon and Saturday night.
• highs 66-63 lows 54-49 warming back to 54 Saturday night.
• Partly cloudy Sunday and Sunday night,
• Mostly cloudy with a slight (20%) chance of afternoon showers Monday (Labor Day), then mostly cloudy with a slight (20%) chance of showers late Monday night through Wednesday.
• highs 62-66 lows 49-53. (seasonal averages high 66 low 52)

 

________________

 

Forecast for the Cascades in Lane County:

• Becoming mostly cloudy and a bit cooler with a good (50%) chance of rain this afternoon, a good (50%) chance of evening rain, showers likely (70%) late tonight,
• Mostly cloudy with a slight (20%) chance of showers Friday AM, a bit cooler with a (40%) chance of showers in the afternoon, a slight (20%) chance of evening showers,  just partly cloudy late Friday night,
• AM clouds, then partly cloudy and a bit warmer Saturday and Saturday night.
• free air freezing level 12,000 ft. today, snow level above 8,000 ft. falling to 7,500 ft. late tonight, 6,500 ft. Friday, 7,000 ft. Friday night, then free air freezing level 9,000 ft. Saturday and Saturday night.
• highs 62-54 warming to near 60 Saturday lows 40-35.
• Partly cloudy and a bit warmer Sunday through Monday (Labor Day) and Monday night,
• Partly cloudy with a slight chance of showers and a bit cooler Tuesday afternoon, partly cloudy with a slight chance of evening showers, mostly cloudy with a slight (20%) chance of showers Tuesday night,
• A mix of clouds and sun with a slight (20%) chance of showers Wednesday AM, then just partly cloudy and a bit cooler Wednesday afternoon with a (40%) chance of showers.
• free air freezing level 9,000 ft. Sunday through Monday, 11,000 ft. Monday night, then snow level above 8,000 ft. Tuesday through Wednesday.
• highs 63-69 cooling back to 63 Wednesday lows 38-42.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

_______________

Here is my weekly weather quiz question. What is “Upwelling?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

________________

 

An upper level low (Shaded “U” shape in blue arrows) has cooled us down with increasing onshore airflow. It will continue to slide  eastward through the Pacific Northwest. The cool-down should last the rest of the week. A frontal system moved through Oregon this afternoon. Another frontal system can be seen approaching the Pacific Northwest by next Wednesday. As much as we need some rain I’m sure most of us are hoping that it is dry and warm for the long Labor day weekend September 3rd through 5th, but it is too soon to make that prediction final. So far it does look like sunshine and warming temperatures for the holiday weekend.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 14 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 19 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 13 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

 

Advisories:

• A health advisory has been issued for water contact at Nye Beach located in Lincoln County due to higher than normal levels of fecal bacteria. Contact with the water can result in diarrhea, stomach cramps, skin rashes, upper respiratory infections and other illnesses.Direct contact with the water should be avoided in this area until the advisory is lifted, especially by children and the elderly who may be more vulnerable to waterborne bacteria. Visitors should avoid wading in nearby creeks, pools of water on the beach, or in discolored water, and stay clear of water runoff flowing into the ocean.
• A health advisory remains in effect for the Ross Island Lagoon and the mouth of the lagoon as it connects to the Holgate Channel. Ross Island Lagoon is located about one river mile south of downtown Portland in Multnomah County. The advisory is being issued due to visual confirmation of a blue-green algae bloom in the lagoon. Oregon Public Health officials advise people to avoid swallowing or inhaling water droplets as a result of swimming or high-speed water activities, such as water skiing and power boating in areas where blooms are identified.
• A health advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.

 

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with a slight (20%) chance of evening showers (under 0.10 in. of rain possible), just mostly cloudy late tonight,
• Mostly cloudy and a bit cooler with a slight (20%) chance of rain Thursday afternoon (under 0.10 in. of rain possible), evening rain likely (70%), a good (50%) chance of showers late Thursday night ( 0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of showers Friday AM, a good (50%) chance of showers and a slight (20%) chance of thunderstorms Friday afternoon, a slight (20%) chance of evening showers, just mostly cloudy late Friday night,
• Then partly cloudy and a bit warmer Saturday and Saturday night.
• lows 53-48 highs 72-74.
•  Partly cloudy and a bit warmer Sunday and in the evening, mostly cloudy Sunday night,
• A mix of clouds and sun Monday (Labor Day), partly cloudy at night,
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Tuesday afternoon, mostly cloudy with a slight (20%) chance of evening showers, a (40%) chance of showers late Tuesday night,
• Then a mix of clouds and sun Wednesday with a (40%) chance of AM showers .
• highs near 75 lows 47-52. (seasonal averages high 81 low 50)

_____

Your College Football Forecast:

Ducks vs UC Davis at Autzen Stadium – Saturday September 3rd- Kickoff 2 PM PDT: Partly cloudy 72 degrees warming to 74 decrees then slow cooling as the game ends, Wind N 5-10 mph.

_____

Beavers vs Minnesota at TCF Bank Stadium Minneapolis, MN – Thursday September 1st – Kickoff (8 PM CDT) 6 PM PDT: Clear 68 degrees and cooling to 62 as the game ends, Wind ESE 5 mph.

________________

 

 

Forecast for Roseburg:

• Mostly cloudy with a slight (20%) chance of isolated showers this evening (under 0.10 in. of rain possible), just mostly cloudy late tonight,
• Mostly cloudy and a bit cooler Thursday, mostly cloudy with a (30%) chance of showers Thursday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with a sight (20%) of showers Friday, just mostly cloudy in the evening, then partly cloudy and a bit warmer late Friday night through Saturday night.
• lows 54-50 highs 77-74 warming back to 77 Saturday.
• Partly cloudy and a bit warmer Sunday, clear in the evening, partly cloudy late Sunday night,
• Partly cloudy and a bit warmer Monday (Labor Day) and Monday night,
• Mostly cloudy with a slight (20%) chance of showers Tuesday through Wednesday AM, then just partly cloudy Wednesday afternoon.
• highs 79-82 lows 50-56. (seasonal averages high 82 low 54)

 

________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy tonight,
• Mostly cloudy and a bit warmer Thursday with a slight (20%) chance of afternoon coastal showers,  a (40%) chance of showers Thursday night (under 0.10 in. of rain possible) and Friday, just mostly cloudy Friday night,
• Mostly cloudy Saturday AM, then partly cloudy in the afternoon and Saturday night.
• lows 53-49 highs 66-63.
• Partly cloudy Sunday through Monday evening (Labor Day), mostly cloudy with a slight (20%) chance of showers late Monday night,
• Mostly cloudy with a slight (20%) chance of showers Tuesday through Wednesday AM, then just partly cloudy Wednesday afternoon.
• highs 62-66 lows 49-53. (seasonal averages high 66 low 52)

 

________________

 

Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of evening showers, a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
• A mix of clouds and sun and a bit cooler Thursday, mostly cloudy with a good (50%) chance of evening rain, a good (50%) chance of showers late Thursday night,
• Mostly cloudy with a (40%) chance of AM showers, a bit cooler with a (40%) chance of showers and a slight (20%) chance of thunderstorms Friday afternoon, a slight (20%) chance of evening showers,  just partly cloudy late Friday night,
• Then partly cloudy and a bit warmer Saturday and Saturday night.
• snow level above 8,000 ft. tonight, free air freezing level 12,000 ft. Thursday, snow level above 8,000 ft. falling to 7,500 ft. late Thursday night, 6,500 ft. Friday, 7,000 ft. Friday night, then free air freezing level 9,000 ft. Saturday and Saturday night.
• lows 42-35 highs 62-54 warming to near 60 Saturday.
• Partly cloudy and a bit warmer Sunday through Monday (Labor Day) and at night,
• Partly cloudy with a slight chance of showers and a bit cooler Tuesday afternoon through Wednesday AM, then just partly cloudy and a bit cooler Wednesday afternoon.
• free air freezing level 9,000 ft. Sunday through Monday, 11,000 ft. Monday night, then snow level above 8,000 ft. Tuesday through Wednesday.
• highs 63-68 cooling back to 63 Wednesday lows 38-42.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

_______________

Here is my weekly weather quiz question. What is “Upwelling?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

________________

 

An upper level low (Shaded “U” shape in blue arrows) has cooled us down with increasing onshore airflow. It will continue to slide to the south then eastward through the Pacific Northwest. The cool-down should last most of the week but the computer models are conflicted over the chances of precipitation. A frontal system is on its way bringing the slight chance of showers by morning. Another frontal system can be seen approaching the Pacific Northwest next between next Tuesday and Wednesday. As much as we need some rain I’m sure most of us are hoping that it is dry and warm for the long Labor day weekend September 3rd through 5th, but it is too soon to make that prediction final. So far it does look like sunshine and warming temperatures for the holiday weekend.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

 

Advisories:

• A health advisory remains in effect for the Ross Island Lagoon and the mouth of the lagoon as it connects to the Holgate Channel. Ross Island Lagoon is located about one river mile south of downtown Portland in Multnomah County. The advisory is being issued due to visual confirmation of a blue-green algae bloom in the lagoon. Oregon Public Health officials advise people to avoid swallowing or inhaling water droplets as a result of swimming or high-speed water activities, such as water skiing and power boating in areas where blooms are identified.
• A health advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.

 

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy and a bit cooler today with a good (50%) chance of showers this afternoon (under 0.10 in. of rain possible), a slight (20%) chance of evening showers (under 0.10 in. of rain possible), just mostly cloudy late tonight,
• Mostly cloudy and a bit cooler with a slight (20%) chance of rainThursday afternoon (under 0.10 in. of rain possible), evening rain likely (60%), a good (50%) chance of showers late Thursday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with a good (50%) chance of AM showers, a bit cooler with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Friday afternoon, mostly cloudy with a slight (20%) chance of evening showers, then just mostly cloudy late Friday night.
• highs 73-69 lows 53-48.
• A mix of clouds and sun and a bit warmer Saturday, partly cloudy and a bit warmer Saturday night through Monday night (Labor Day),
• Then a mix of clouds and sun and a bit warmer Tuesday.
• highs 73-79 lows 49-52. (seasonal averages high 81 low 50)

_____

Your College Football Forecast:

Ducks vs UC Davis at Autzen Stadium – Saturday September 3rd- Kickoff 2 PM PDT: A mix of clouds and sun 75 degrees and cooling as the game progresses, Wind N 5-10 mph.

_____

Beavers vs Minnesota at TCF Bank Stadium Minneapolis, MN – Thursday September 1st – Kickoff (8 PM CDT) 6 PM PDT: Mostly sunny 72 degrees and cooling as the game progresses, Wind ESE 5 mph.

________________

 

 

Forecast for Roseburg:

• Mostly cloudy with a slight (20%) chance of showers and a bit cooler today (under 0.10 in. of rain possible),  a slight (20%) chance of showers this evening (under 0.10 in. of rain possible), partly cloudy with a slight (20%) chance of showers late tonight,
• Partly cloudy Thursday AM, mostly cloudy and a bit cooler in the afternoon, a (30%) chance of showers Thursday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with a sight (20%) of showers Friday and in the evening, then just partly cloudy late Friday night.
• highs 78-74 lows 54-52.
• Partly cloudy and a bit warmer Saturday through Sunday, mostly clear in the evening, partly cloudy and a bit warmer Sunday night and Monday (Labor Day) through Tuesday (a bit cooler Tuesday).
• highs 77-84 cooling to near 80 Tuesday lows 50-54. (seasonal averages high 83 low 54)

 

________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy and a bit cooler with a (40%) chance of showers today (under 0.10 in. of rain possible), a slight (20%) chance of evening inland showers and just mostly cloudy late while a slight (20%) chance of coastal showers tonight (under 0.10 in. of rain possible),
• Partly cloudy Thursday AM, mostly cloudy with a slight (20%) chance of coastal showers Thursday afternoon,  mostly cloudy with a (30%) chance of showers Thursday night (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of showers Friday, then just mostly cloudy Friday night.
• highs 65-63 lows near 53.
• Mostly cloudy Saturday, partly cloudy Saturday night through Monday (Labor Day), partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers late Monday night,
• Mostly cloudy with a slight (20%) chance of showers Tuesday AM, then just mostly cloudy in the afternoon.
• highs 65-68 lows 50-54. (seasonal averages high 66 low 52)

 

________________

 

Forecast for the Cascades in Lane County:

• Partly cloudy and a bit cooler with a slight (20%) chance of showers this afternoon, a good (50%) chance of evening showers, a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
• A mix of clouds and sun and a bit cooler in the afternoon, mostly cloudy with a good (50%) chance of evening, a good (50%) chance of showers late Thursday night,
• Mostly cloudy and a bit cooler with a (40%) chance of AM rain and snow showers, a (40%) chance of showers and a slight (20%) chance of thunderstorms Friday afternoon, a slight (20%) chance of evening showers, then just partly cloudy late Friday night.
• snow level above 8,000 ft. today and tonight, free air freezing level 12,000 ft. Thursday, snow level above 8,000 ft. falling to 7,500 ft. late Thursday night, 6,500 ft. Friday, then 7,000 ft. Friday night.
• highs 66-54 lows 42-35.
• Partly cloudy and a bit warmer Saturday through Monday (Labor Day) and continuing through Tuesday.
• free air freezing level 9,000 ft. Saturday through Sunday, 11,000 ft. Sunday night, 10,000 ft. Monday, 12,000 ft. Monday night, then 11,000 ft. Tuesday.
• highs 59-69 lows 35-40.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

_______________

Here is my weekly weather quiz question. What is “Upwelling?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

________________

 

An upper level low (Shaded “U” shape in blue arrows) has cooled us down with increasing onshore airflow. It will continue to slide to the south then eastward through the Pacific Northwest. The cool-down should last most of the week but the computer models are conflicted over the chances of precipitation. A frontal system is on its way bringing the slight chance of showers by morning. Another frontal system can be seen approaching the Pacific Northwest next between next Tuesday and Wednesday. As much as we need some rain I’m sure most of us are hoping that it is dry and warm for the long Labor day weekend September 3rd through 5th, but it is too soon to make that prediction final. So far it does look like sunshine and warming temperatures for the holiday weekend.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 16 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 16 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

 

Advisories:

• A RED FLAG WARNING IS IN EFFECT UNTIL 8 PM THIS EVENING FOR STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST INCLUDING THE BLM LAND IN EASTERN LAKE COUNTY, WESTERN HARNEY COUNTY, THE BURNS BLM, THE VALE BLM AND THE BAKER VALLEY.
• A health advisory remains in effect for the Ross Island Lagoon and the mouth of the lagoon as it connects to the Holgate Channel. Ross Island Lagoon is located about one river mile south of downtown Portland in Multnomah County. The advisory is being issued due to visual confirmation of a blue-green algae bloom in the lagoon. Oregon Public Health officials advise people to avoid swallowing or inhaling water droplets as a result of swimming or high-speed water activities, such as water skiing and power boating in areas where blooms are identified.
• A health advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.

 

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy tonight,
• Mostly cloudy and a bit cooler Wednesday with a good (50%) chance of AM rain, a good (50%) chance of showers in the afternoon (under 0.10 in. of rain possible), a (40%) chance of evening showers, a slight (20%) chance of showers late Wednesday night (under 0.10 in. of rain possible),
• A mix of clouds and sun in the AM, mostly cloudy and a bit cooler with a slight (20%) chance of showersThursday afternoon, a good (50%) chance of showers Thursday night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of AM showers,  a bit cooler with a good (50%) chance of showers Friday afternoon, mostly cloudy with a slight (20%) chance of evening showers, then just mostly cloudy late Friday night.
• lows 55-48 highs 73-69.
• A mix of clouds and sun and a bit warmer Saturday, partly cloudy and a bit warmer Saturday night through Monday night (Labor Day),
• Then a mix of clouds and sun and a bit warmer Tuesday.
• highs 73-79 lows 49-52. (seasonal averages high 81 low 50)

_____

Your College Football Forecast:

Ducks vs UC Davis at Autzen Stadium – Saturday September 3rd- Kickoff 2 PM PDT: A mix of clouds and sun 75 degrees and cooling as the game progresses.

_____

Beavers vs Minnesota at TCF Bank Stadium Minneapolis, MN – Thursday September 1st – Kickoff (8 PM CDT) 6 PM PDT: Mostly clear 70 degrees and cooling as the game progresses.

________________

 

 

Forecast for Roseburg:

• Partly cloudy with a slight (20%) chance of showers tonight,
• Mostly cloudy with a (30%) chance of showers and a bit cooler Wednesday (under 0.10 in. of rain possible),  a slight (20%) chance of showers in the evening (under 0.10 in. of rain possible), just mostly cloudy late Wednesday night,
• Partly cloudy Thursday AM, mostly cloudy and a bit cooler in the afternoon, a (30%) chance of showers late Thursday night,
• Mostly cloudy and a bit cooler with a sight (20%) of showers Friday and in the evening, then just partly cloudy late Friday night.
• lows 54-52 highs 78-74.
• Partly cloudy and a bit warmer Saturday through Sunday AM, sunny and a bit warmer in the afternoon, partly cloudy and a bit warmer Sunday night and Monday (Labor Day) through Tuesday (a bit cooler Tuesday).
• highs 77-84 cooling to near 80 Tuesday lows 50-54. (seasonal averages high 83 low 54)

 

________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Partly cloudy this evening at the shore with a (30%) chance of showers late tonight while partly cloudy inland this evening and mostly cloudy with a sight (20%) chance of showers inland late tonight (under 0.10 in. of rain possible),
• Cloudy and a bit cooler with a (40%) chance of showers Wednesday (under 0.10 in. of rain possible), a slight (20%) chance of evening inland showers and just mostly cloudy late while a slight (20%) chance of coastal showers Wednesday night (under 0.10 in. of rain possible),
• Partly cloudy Thursday AM inland and mostly cloudy with a slight (20%) chance of inland showers in the afternoon while a slight (20%) chance of coastal showers Thursday afternoon,  mostly cloudy with a (40%) chance of showers Thursday night,
• Mostly cloudy with a (40%) chance of showers Friday, then just mostly cloudy Friday night.
• lows 54-52 highs 65-63.
• Then partly cloudy Saturday through Monday (Labor Day) and through Tuesday.
• highs 65-68 lows 50-54. (seasonal averages high 66 low 52)

 

________________

 

Forecast for the Cascades in Lane County:

• Partly cloudy with a slight (20%) chance of showers this evening, just partly cloudy late tonight,
• Mostly sunny in the AM, partly cloudy and a bit cooler Wednesday afternoon with a good (50%) chance of evening showers, a slight (20%) chance of showers late Wednesday night (under 0.10 in. of rain possible),
• Partly cloudy Thursday AM, partly cloudy and a bit cooler with a slight (20%) chance of showers in the afternoon, mostly cloudy with a (40%) chance of showers Thursday night,
• A mix of clouds and sun and a bit cooler with a (40%) chance of AM rain and snow showers, a (30%) chance of showers Friday afternoon, mostly cloudy with a slight (20%) chance of evening showers, then just partly cloudy late Friday night.
• snow level above 8,000 ft. tonight through Wednesday night, free air freezing level 12,000 ft. Thursday, snow level above 8,000 ft. Thursday night through Friday night.
• lows 44-35 highs 64-54.
•  Partly cloudy and a bit warmer Saturday through Monday (Labor Day) and continuing through Tuesday.
• free air freezing level 9,000 ft. Saturday through Sunday, 11,000 ft. Sunday night, 10,000 ft. Monday, 12,000 ft. Monday night, then 11,000 ft. Tuesday.
• highs 59-69 lows 35-40.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

_______________

Here is my new weekly weather quiz question. What is “Upwelling?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

________________

 

An upper level low (Shaded “U” shape in blue arrows) has cooled us down with increasing onshore airflow. It will continue to slide to the south from off the British Columbia coast and then move eastward. The cool-down should last most of the week but the computer  models are conflicted over the chances of precipitation. A frontal system is on its way bringing the slight chance of drizzle at night. By Thursday the frontal system will have passed through the Pacific Northwest continuing the slight chance of showers. As much as we need some rain I’m sure most of us are hoping that it is dry and warm for the long Labor day weekend September 3rd through 5th, but it is too soon to make that prediction. So far it does look like sunshine and warming temperatures for the holiday weekend.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 20 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 20 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

 

Advisories:

• A RED FLAG WARNING IS IN EFFECT FROM 2 PM UNTIL 8 PM TODAY FOR STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST INCLUDING THE BLM LAND IN EASTERN LAKE COUNTY, WESTERN HARNEY COUNTY, THE BURNS BLM, THE VALE BLM AND THE BAKER VALLEY.
• A health advisory remains in effect for the Ross Island Lagoon and the mouth of the lagoon as it connects to the Holgate Channel. Ross Island Lagoon is located about one river mile south of downtown Portland in Multnomah County. The advisory is being issued due to visual confirmation of a blue-green algae bloom in the lagoon. Oregon Public Health officials advise people to avoid swallowing or inhaling water droplets as a result of swimming or high-speed water activities, such as water skiing and power boating in areas where blooms are identified.
• A health advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.

 

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy and a bit cooler this afternoon, a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler Wednesday with a good (50%) chance of showers (under 0.10 in. of rain possible), a (40%) chance of evening showers, a slight (20%) chance of showers late Wednesday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with a slight (20%) chance of rain Thursday afternoon, then mostly cloudy with a good (50%) chance of rain Thursday night.
• highs 76-72 lows 53-50.
• A mix of clouds and sun and a bit cooler with a (40%) chance of AM showers and a bit warmer Friday, mostly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Friday night,
• A mix of clouds and sun and a bit warmer Saturday, then partly cloudy and a bit warmer Saturday night through Monday (Labor Day).
• highs 72-79 lows near 50. (seasonal averages high 81 low 50)

 

________________

 

 

Forecast for Roseburg:

• Partly cloudy and a bit cooler this afternoon and tonight,
• Mostly cloudy with a slight (20%) chance of showers and a bit cooler Wednesday (under 0.10 in. of rain possible) and in the evening, just mostly cloudy late Wednesday night (under 0.10 in. of rain possible),
• Partly cloudy Thursday AM, mostly cloudy and a bit cooler with a slight (20%) chance of showers in the afternoon, mostly cloudy with a (30%) chance of showers late Thursday night.
• highs 80-77 lows 52-54.
• Mostly cloudy with a sight (20%) of showers Friday, partly cloudy with a slight (20%) chance of evening showers, then just partly cloudy and a bit warmer Saturday through Monday (Labor Day).
• highs 76-84 lows near 52. (seasonal averages high 83 low 54)

 

________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy and a bit warmer this afternoon with a slight (20%) chance of coastal showers , partly cloudy this evening, mostly cloudy with a sight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with a (30%) chance of showers Wednesday (under 0.10 in. of rain possible), a slight (20%) chance of evening coastal showers while a slight (20%) chance of inland showers in the evening, mostly cloudy late Wednesday night (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of coastal showers Thursday afternoon while partly cloudy inland in the AM and mostly cloudy in the afternoon with a slight (20%) chance of showers and a bit cooler, then mostly cloudy with a (30%) chance of showers Thursday night.
• highs 68-65 lows 55-53.
• Mostly cloudy with a (30%) chance of AM showers, a (30%) chance of showers Friday, a slight (20%) chance of evening showers, just mostly cloudy Friday night,
• Then partly cloudy Saturday  through Monday (Labor Day).
• highs 65-67 lows near 52. (seasonal averages high 66 low 52)

 

________________

 

Forecast for the Cascades in Lane County:

• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers this afternoon and evening, just partly cloudy late tonight,
• Partly cloudy and a bit cooler Wednesday with a slight (20%) chance of afternoon showers, a (40%) chance of evening showers,  just a slight (20%) chance of showers late Wednesday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain Thursday afternoon, then partly cloudy with a (40%) chance of rain at night.
• snow level above 8,000 ft. today through Thursday night.
• highs 68-60 lows 44-37.
• A mix of clouds and sun and a bit warmer with a (40%) chance of AM rain, a slight (20%) chance of showers Friday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Friday  night through Sunday night,
• Then partly cloudy with a slight (20%) chance of showers Monday afternoon (Labor Day).
• snow level above 7,000 ft. Friday and Friday night, free air freezing level 7,500 ft. Saturday, 9,000 ft. Saturday night, 10,000 ft. Sunday, 12,000 ft. Sunday night, then snow level above 8,000 ft. Monday.
• highs 55-66 lows 37-40.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

_______________

Here is my new weekly weather quiz question. What is “Upwelling?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

________________

 

An upper level low (Shaded “U” shape in blue arrows) has cooled us down with increasing onshore airflow. It will continue to slide to the south from off the British Columbia coast and then move eastward. The cool-down should last most of the week but the computer  models are conflicted over the chances of precipitation. A frontal system is on its way bringing the slight chance of drizzle at night. By Thursday the frontal system will have passed through the Pacific Northwest continuing the slight chance of showers. As much as we need some rain I’m sure most of us are hoping that it is dry and warm for the long Labor day weekend September 3rd through 5th, but it is too soon to make that prediction. So far it does look like sunshine and warming temperatures for the holiday weekend.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 21 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 19 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

 

Advisories:

• A RED FLAG WARNING IS  IN EFFECT FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITY UNTIL 9 PM TONIGHT FOR THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE THE BLM LAND IN EASTERN LAKE COUNTY AND WESTERN HARNEY COUNTY.
• A RED FLAG WARNING IS IN EFFECT FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITY UNTIL 9 PM TUESDAY FOR THE BLM LAND IN BURNS, VALE AND THE BAKER VALLEY.
• A health advisory remains in effect for the Ross Island Lagoon and the mouth of the lagoon as it connects to the Holgate Channel. Ross Island Lagoon is located about one river mile south of downtown Portland in Multnomah County. The advisory is being issued due to visual confirmation of a blue-green algae bloom in the lagoon. Oregon Public Health officials advise people to avoid swallowing or inhaling water droplets as a result of swimming or high-speed water activities, such as water skiing and power boating in areas where blooms are identified.
• A health advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.

 

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy this evening, becoming mostly cloudy late tonight,
• Cloudy Tuesday AM, partly cloudy and a bit cooler in the afternoon, a slight (20%) chance of showers late Tuesday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler Wednesday with a good (50%) chance of showers (under 0.10 in. of rain possible), a (30%) chance of evening showers, a slight (20%) chance of showers late Wednesday night (under 0.10 in. of rain possible),
• A mix of clouds and sun and a bit cooler with a (30%) chance of showers Thursday afternoon, then mostly cloudy with a (30%) chance of showers Thursday night.
• lows 55-50 highs 78-72.
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of AM showers and a bit warmer Friday, mostly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Friday night,
• A mix of clouds and sun and a bit warmer Saturday, then partly cloudy and a bit warmer Saturday night through Monday (Labor Day).
• highs 74-79 lows 50-53. (seasonal averages high 81 low 50)

 

________________

 

 

Forecast for Roseburg:

• Partly cloudy this evening, mostly cloudy late tonight and Tuesday AM, partly cloudy and a bit cooler in the afternoon, partly cloudy with a slight (20%) chance of showers late Tuesday night,
• Mostly cloudy with a (30%) chance of showers and a bit cooler Wednesday (under 0.10 in. of rain possible), partly cloudy in the evening with a slight (20%) chance of showers, mostly cloudy late Wednesday night (under 0.10 in. of rain possible),
• Mostly cloudy Thursday AM, partly cloudy and a bit cooler with a (30%) chance of showers in the afternoon, partly cloudy with a (30%) of showers in the evening, then mostly cloudy with a (30%) chance of showers late Thursday night.
• lows 55-53 highs 79-75.
• Mostly cloudy with a sight (20%) of showers Friday and in the evening, just mostly cloudy at night and Saturday AM, then partly cloudy and a bit warmer Saturday afternoon through Monday (Labor Day).
• highs 76-82 lows near 53. (seasonal averages high 83 low 54)

 

________________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with patchy fog late tonight, areas of coastal drizzle late,
• Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer Tuesday afternoon with a slight (20%) chance of coastal showers , a slight (20%) chance of coastal showers at night while partly cloudy in the evening inland and mostly cloudy with a sight (20%) chance of showers inland late Tuesday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with a good (50%) chance of showers Wednesday (under 0.10 in. of rain possible), a slight (20%)  chance of evening coastal showers while partly cloudy with a (30%) chance of inland showers in the evening, mostly cloudy late Wednesday night (under 0.10 in. of rain possible),
• Mostly cloudy in the AM, partly cloudy with a (30%) chance of showers and a bit cooler Thursday afternoon, partly cloudy with a (30%) chance of evening showers, then mostly cloudy with a (30%) chance of showers late Thursday night.
• lows 53-55 cooling back to 53 Thursday night highs 68-66.
• Mostly cloudy with a slight (20%) chance of showers Friday through Saturday AM, then partly cloudy Saturday afternoon through Monday (Labor Day).
• highs near 66 lows near 53. (seasonal averages high 66 low 52)

 

________________

 

Forecast for the Cascades in Lane County:

• Partly cloudy tonight,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers and thunderstorms Tuesday afternoon, partly cloudy with a slight (20%) chance of showers and thunderstorms in the evening, mostly clear late Tuesday night,
• Partly cloudy and a bit cooler Wednesday with a slight (20%) chance of afternoon showers, a (30%) chance of evening showers,  just a slight (20%) chance of showers late Wednesday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Thursday afternoon, then partly cloudy with a slight (20%) chance of showers at night.
• free air freezing level 14,000 ft. tonight, snow level above 8,000 ft. Tuesday through Thursday night.
• lows 46-37 highs 68-60.
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Friday, mostly cloudy with a slight (20%) chance of evening showers, partly cloudy with a slight (20%) chance of showers Friday night, just partly cloudy and a bit warmer Saturday through late Sunday night,
• Then partly cloudy with a slight (20%) chance of showers Monday afternoon (Labor Day).
• snow level above 7,000 ft. Friday and Friday night, free air freezing level 7,500 ft Saturday, 9,000 ft. Saturday night, 10,000 ft. Sunday, 12,000 ft. Sunday night, then snow level above 8,000 ft. Monday.
• highs 63-66 lows 37-46.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

_______________

Here is my new weekly weather quiz question. What is “Upwelling?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

________________

 

An upper level low (Shaded “U” shape in blue arrows) has cooled us down with increasing onshore airflow. It will continue to slide to the south from off the British Columbia coast and then move eastward. The cool-down should last most of the week but the computer  models are conflicted over the chance of any precipitation. A frontal system will be on its way to us today bringing the slight chance of drizzle at night. By Thursday a frontal system will have passed through the Pacific Northwest continuing the slight chance of showers. As much as we need some rain I’m sure most of us are hoping that it is dry and warm for the long Labor day weekend September 3rd through 5th, but it is too soon to make that prediction.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

 

Advisories:

• A RED FLAG WARNING IS  IN EFFECT FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITY UNTIL 9 PM TONIGHT FOR THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE THE BLM LAND IN EASTERN LAKE COUNTY AND WESTERN HARNEY COUNTY.
• A RED FLAG WARNING IS IN EFFECT FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITY UNTIL 8 PM TONIGHT FOR THE BLM LAND IN BURNS, VALE AND THE BAKER VALLEY.
• A health advisory remains in effect for the Ross Island Lagoon and the mouth of the lagoon as it connects to the Holgate Channel. Ross Island Lagoon is located about one river mile south of downtown Portland in Multnomah County. The advisory is being issued due to visual confirmation of a blue-green algae bloom in the lagoon. Oregon Public Health officials advise people to avoid swallowing or inhaling water droplets as a result of swimming or high-speed water activities, such as water skiing and power boating in areas where blooms are identified.
• A health advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.

 

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly sunny and a bit cooler this afternoon, partly cloudy tonight,
• Cloudy with patchy fog and drizzle Tuesday AM, partly cloudy in the afternoon and evening, cloudy with a slight (20%) chance of showers late Tuesday night,
• Mostly cloudy and a bit cooler Wednesday with a good (50%) chance of showers, then a slight (20%) chance of showers late Wednesday night,
• highs 78-72 lows 53-55 cooling to 52 Wednesday night.
• A mix of clouds and sun and a bit cooler with a (30%) chance of showers Thursday afternoon, mostly cloudy with a slight (20%) chance of evening showers, partly cloudy with a slight (20%) chance of showers late Thursday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers and a bit warmer Friday, mostly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Friday night,
• A mix of clouds and sun and a bit warmerer Saturday, mostly cloudy in the evening, then partly cloudy late Saturday night through Sunday afternoon (a bit cooler in the afternoon).
• highs 72-78 cooling to 76 Sunday lows 55-50. (seasonal averages high 81 low 50)

 

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Forecast for Roseburg:

• Sunny and a bit cooler this afternoon, mostly clear this evening, mostly cloudy late tonight and Tuesday AM, partly cloudy and a bit cooler in the afternoon, partly cloudy with a slight (20%) chance of showers late Tuesday night,
• Mostly cloudy with a slight (20%) chance of showers and a bit cooler Wednesday, partly cloudy in the evening, then mostly cloudy  late Wednesday night.
• highs 84-74 lows 56-54.
• Mostly cloudy Thursday AM, partly cloudy and a bit warmer with a slight (20%) chance of showers in the afternoon, partly cloudy with a sight (20%) of showers Thursday night and Friday, mostly cloudy with a slight (20%) chance of showers Friday evening, just mostly cloudy at night,
• Then partly cloudy Saturday through Sunday.
• highs 78-80 lows near 54. (seasonal averages high 83 low 54)

 

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Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy with patchy coastal fog late tonight,
• Mostly cloudy  with patchy AM fog, partly cloudy and a bit warmer with a slight (20%) chance of coastal showers Tuesday afternoon, a (30%) chance of coastal showers late at night while partly cloudy in the evening inland and mostly cloudy with a sight (20%) chance of showers inland late Tuesday night,
• Mostly cloudy and a bit warmer with a (30%) chance of showers Wednesday, partly cloudy in the evening, then mostly cloudy Wednesday night.
• highs 64-67 cooling back to 64 Wednesday lows 52-54.
• Mostly cloudy in the AM, partly cloudy with a slight (20%) chance of showers Thursday AM, partly cloudy and a bit warmer with a slight (20%) chance of showers in the afternoon and Thursday night,
• Mostly cloudy with a slight (20%) chance of showers Friday and Friday night ,
• Then partly cloudy Saturday through Sunday.
• highs near 66 lows near 53. (seasonal averages high 66 low 52)

 

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Forecast for the Cascades in Lane County:

• Mostly sunny and a bit cooler today, partly cloudy tonight,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers and thunderstorms Tuesday afternoon, partly cloudy with a slight (20%) chance of showers and thunderstorms in the evening, mostly cloudy late Tuesday night,
• Partly cloudy and a bit cooler Wednesday with a slight (20%) chance of afternoon showers, a (30%) chance of evening showers, then just a slight (20%) chance of showers late Wednesday night.
• free air freezing level 14,000 ft. today and tonight, snow level above 8,000 ft. Tuesday through Wednesday night.
• highs 76-62 lows 45-42.
• A mix of clouds and sun with a slight (20%) chance of showers Thursday, partly cloudy with a slight (20%) chance of showers at night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Friday, mostly cloudy with a slight (20%) chance of evening showers, partly cloudy with a slight (20%) chance of showers late Friday night through Saturday evening,  just partly cloudy late Saturday night,
• Mostly sunny Sunday AM, then partly cloudy and a bit warmer Sunday afternoon.
• snow level above 8,000 ft. Thursday through Saturday night, then free air freezing level 10,000 ft Sunday.
• highs 62-60 warming to 64 Saturday cooling to 60 Sunday lows 42-37 warming to 40 Saturday night.

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

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Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

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Here is my weekly weather quiz question for the last time. What is “Undertow?” Here is the correct answer.Undertow is a relatively small-scale surf-zone current moving away from the beach. Rip currents form as waves disperse along the beach causing water to become trapped between the beach and a sandbar or other underwater feature. The water converges into a narrow, river-like channel moving away from the shore at high speed. I will have a new weekly weather quiz question for you starting Monday. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

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An upper level low (Shaded “U” shape in blue arrows) has cooled us down with increasing onshore airflow. The cool-down should last most of the week but the computer  models are conflicted over the chance of any precipitation. A frontal system will be on its way to us Monday bringing the slight chance of drizzle at night. By Thursday a frontal system will have passed through the Pacific Northwest continuing the slight chance of showers. As much as we need some rain I’m sure most of us are hoping that it is dry and warm for the long Labor day weekend September 3rd through 5th.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 19 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 19 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• A RED FLAG WARNING IS  IN EFFECT FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITY FROM NOON UNTIL 9 PM MONDAY FOR THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE THE BLM LAND IN EASTERN LAKE COUNTY AND WESTERN HARNEY COUNTY.
• A RED FLAG WARNING IS IN EFFECT FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITY FROM NOON UNTIL 8 PM MONDAY FOR THE BLM LAND IN BURNS, VALE AND THE BAKER VALLEY.
• A health advisory remains in effect for the Ross Island Lagoon and the mouth of the lagoon as it connects to the Holgate Channel. Ross Island Lagoon is located about one river mile south of downtown Portland in Multnomah County. The advisory is being issued due to visual confirmation of a blue-green algae bloom in the lagoon. Oregon Public Health officials advise people to avoid swallowing or inhaling water droplets as a result of swimming or high-speed water activities, such as water skiing and power boating in areas where blooms are identified.
• A health advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.

 

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Clear this evening, becoming mostly cloudy late tonight,
• Partly cloudy Monday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy with a slight (20%) chance of patchy drizzle late Monday night and Tuesday AM, a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers in the afternoon, partly cloudy with a slight (20%) chance of showers in the evening, cloudy with a (40%) chance of showers late Tuesday night,
• Mostly cloudy and a bit cooler Wednesday with a good (50%) chance of showers, a (30%) chance of showers in the evening, then mostly cloudy with a slight (20%) chance of showers late Wednesday night,
• lows 53-57 cooling to 52 Wednesday night highs 80-72.
• A  mix of clouds and sun and a bit cooler with a (30%) chance of showers Thursday, mostly cloudy with a slight (20%) chance of evening showers, partly cloudy with a slight (20%) chance of showers late Thursday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Friday, mostly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Friday night,
• A mix of clouds and sun and a bit cooler Saturday, mostly cloudy in the evening, partly cloudy late Saturday night,
• Then partly cloudy with a slight (20%) chance of showers Sunday afternoon.
• highs 72-78 lows 55-50. (seasonal averages high 81 low 50)

 

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Forecast for Roseburg:

• Mostly clear this evening, partly cloudy late tonight,
• Mostly cloudy in the AM, sunny and a bit cooler Monday afternoon, mostly clear in the evening, mostly cloudy late Monday night and Tuesday AM, partly cloudy and a bit cooler in the afternoon, partly cloudy with a (30%) chance of showers late Tuesday night,
• Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy and a bit cooler with a slight (20%) chance of showers Wednesday afternoon and evening, then mostly cloudy with a slight (20%) chance of showers late Wednesday night.
• lows 56-54 highs 84-74.
• Mostly cloudy with a slight (20%) chance of showers Thursday AM, partly cloudy and a bit warmer with a slight (20%) chance of showers in the afternoon through Friday, mostly cloudy with a slight (20%) chance of showers Friday night,
• Then partly cloudy with a slight (20%) chance of showers Saturday through Sunday (a bit warmer Sunday).
• highs 78-80 lows near 54. (seasonal averages high 83 low 54)

 

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Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Partly cloudy this evening, mostly cloudy with patchy coastal fog and a slight (20%) chance of drizzle late tonight and Monday AM, otherwise mostly cloudy and a bit warmer Monday afternoon, partly cloudy to mostly cloudy in the evening, mostly cloudy Monday night with a slight (20%) chance of  coastal showers late at night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of coastal showers Tuesday while mostly cloudy inland in the AM and partly cloudy and a bit warmer inland in the afternoon, mostly cloudy with a (30%) chance of coastal showers at night while partly cloudy in the evening inland and mostly cloudy with a (30%) chance of showers inland late Tuesday night,
• Mostly cloudy and a bit warmer with a (40%) chance of showers Wednesday, partly cloudy with a slight (20%) chance of evening showers, then mostly cloudy with a slight (20%) chance of showers Wednesday night.
• lows 52-54 highs 64-67 cooling back to 64 Wednesday.
• Mostly cloudy with a slight (20%) chance of showers Thursday AM, partly cloudy and a bit warmer with a slight (20%) chance of showers in the afternoon and Thursday night,
• Mostly cloudy with a slight (20%) chance of showers Friday and Friday night ,
• Then partly cloudy with a slight (20%) chance of showers Saturday through Sunday..
• highs near 66 lows near 53. (seasonal averages high 66 low 52)

 

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Forecast for the Cascades in Lane County:

• Clear tonight,
• Mostly sunny and a bit cooler Monday, partly cloudy Monday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms Tuesday afternoon and evening, mostly cloudy with a slight (20%) chance of showers late Tuesday night,
• Cloudy Wednesday AM with a (40%) chance of showers, partly cloudy and a bit cooler Wednesday afternoon with a (40%) chance of showers, partly cloudy with a (30%) chance of evening showers, then just a slight (20%) chance of showers late Wednesday night.
• free air freezing level 14,000 ft. tonight, 13,000 ft. Monday and Monday night, snow level above 8,000 ft. Tuesday through Wednesday night.
• lows 48-42 highs 69-62.
• Partly cloudy with a slight (20%) chance of showers Thursday afternoon and at night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Friday, mostly cloudy with a slight (20%) chance of evening showers, partly cloudy with a slight (20%) chance of showers and a bit cooler Friday night through Saturday evening, just partly cloudy late Saturday night,
• Mostly sunny Sunday AM, then partly cloudy and a bit warmer Sunday afternoon.
• snow level above 8,000 ft. Thursday through Saturday night, then free air freezing level 10,000 ft Sunday.
• highs 62-58 warming to 64 Sunday lows 42-37 warming to 40 Saturday night.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

_______________

Here is my weekly weather quiz question for the last time. What is “Undertow?” Here is the correct answer.Undertow is a relatively small-scale surf-zone current moving away from the beach. Rip currents form as waves disperse along the beach causing water to become trapped between the beach and a sandbar or other underwater feature. The water converges into a narrow, river-like channel moving away from the shore at high speed. I will have a new weekly weather quiz question for you starting Monday. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

________________

 

An upper level low (Shaded “U” shape in blue arrows) is cooling us down away from the record high 90s with increasing onshore airflow. The cool-down should last all week but the computer  models are conflicted over the chance of any precipitation. A frontal system gets stuck just to our north on Monday. Between Wednesday and Thursday the frontal system finally moves through the Pacific Northwest to bring a possible chance of showers our way.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 22 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 27 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• A RED FLAG WARNING IS IN EFFECT FOR GUSTY WILDS AND LOW RELATIVE HUMIDITY UNTIL 9 PM TONIGHT FOR THE EAST SLOPES OF THE NORTHERN OREGON CASCADES AND THE LOWER COLUMBIA BASIN OF OREGON
• A health advisory remains in effect for the Ross Island Lagoon and the mouth of the lagoon as it connects to the Holgate Channel. Ross Island Lagoon is located about one river mile south of downtown Portland in Multnomah County. The advisory is being issued due to visual confirmation of a blue-green algae bloom in the lagoon. Oregon Public Health officials advise people to avoid swallowing or inhaling water droplets as a result of swimming or high-speed water activities, such as water skiing and power boating in areas where blooms are identified.
• A health advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.

 

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy this evening, mostly cloudy late tonight,
• Partly cloudy Sunday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy Sunday night through Monday evening, mostly cloudy late Monday night,
• Mostly cloudy and a bit cooler Tuesday, mostly cloudy with a slight (20%) chance of showers in the evening, then a (40%) chance of showers Tuesday night.
• lows 53-56 highs 82-77.
•  A mix of clouds and sun and a bit cooler Wednesday with a (40%) chance of AM showers, a slight (20%) chance of showers in the afternoon, partly cloudy with a slight (20%) chance of showers Wednesday night,
• A  mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Thursday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a (30%) chance of showers late Thursday night,
• Mostly cloudy and a bit cooler with a (30%) chance of showers Friday and Friday night,
• Then a mix of clouds and sun and a bit cooler with a (40%) chance of showers Saturday.
• highs 76-72 lows 52-55 cooling to 50 Saturday. (seasonal averages high 81 low 50)

 

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Forecast for Roseburg:

• Mostly clear tonight,
• Sunny and a bit cooler Sunday, mostly clear in the evening, partly cloudy late Sunday night,
• Mostly cloudy in the AM, sunny and a bit cooler Monday afternoon, partly cloudy at night,
• Mostly cloudy in the AM, sunny and a bit cooler Tuesday afternoon, mostly clear in the evening, mostly cloudy with a slight (20%) chance of showers late Tuesday night.
• lows near 55 highs 92-80.
•  Mostly cloudy and a bit cooler with a slight (20%) chance of showers Wednesday through Thursday, partly cloudy with a slight (20%) chance of evening showers, then mostly cloudy with a slight (20%) chance of showers Thursday night through Saturday.
• highs 78-76 warming back to 78 Saturday lows near 54. (seasonal averages high 83 low 54)

 

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Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Partly cloudy this evening, mostly cloudy with patchy coastal fog late tonight and Sunday AM, sunny in the afternoon, partly cloudy in the evening, mostly cloudy late Sunday night,
• Mostly cloudy with patchy coastal AM fog and drizzle, otherwise partly cloudy and a bit cooler Monday afternoon, mostly cloudy with patchy coastal fog late Monday night.
• Mostly cloudy with patchy AM fog, sunny with a slight (20%) chance of showers and a bit warmer Tuesday afternoon, then mostly cloudy with a (40%) chance of showers Tuesday night.
• lows 52-54 highs 65-62 warming back to 65 Tuesday.
• Mostly cloudy and a bit warmer with a (30%) chance of showers Wednesday, a slight (20%) chance of showers at night and Thursday AM, partly cloudy and a bit warmer with a slight (20%) chance of showers in the afternoon, then mostly cloudy with a slight (20%) chance of showers Thursday night through Saturday.
• highs 67-65 lows near 53. (seasonal averages high 66 low 52)

 

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Forecast for the Cascades in Lane County:

• Mostly clear tonight,
• Sunny and a bit cooler Sunday, clear at night,
• Mostly sunny and a bit cooler Monday, partly cloudy Monday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms Tuesday afternoon and evening, then mostly cloudy with a (30%) chance of showers late Tuesday night.
• free air freezing level 14,000 ft. tonight through Monday night, 13,000 ft. Tuesday AM, snow level above 8,000 ft. Tuesday afternoon and at night.
• lows 47-43 highs 77-67.
• Partly cloudy and a bit cooler Wednesday with a (30%) chance of AM showers, just partly cloudy in the afternoon and Wednesday night,
• A mix of clouds and sun with a slight (20%) chance of showers and a bit cooler Thursday afternoon, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a (40%) chance of showers late Thursday night,
• Then a mix of clouds and sun and a bit cooler with a (30%) chance of showers Friday and Saturday, mostly cloudy with a (30%) chance of showers Friday night.
• snow level above 8,000 ft. Wednesday, free air freezing level 11,000 ft. Wednesday night, then snow level above 8,000 ft. Thursday and through Saturday.
• highs 65-55 lows 43-37.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

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