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.

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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.

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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).

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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.

 

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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)

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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.

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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.

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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)

 

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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)

 

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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.

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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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