Here is my new weekly weather quiz question. What is “Rayleigh Scattering?” 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. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

An upper level high (Shaded “Arch” shape with blue arrows) is building over us and that means sunshine and warming temperatures for a while.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 33 in the Good category measuring Particulate Matter.

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

Cottage Grove: The Air Quality Index is 32 in the Good category measuring Ozone.

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

________________

Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. 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 CONTINUES FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.

________________

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

• Clear tonight,
• Sunny and warmer Friday, clear in the evening, partly cloudy and cooler late at night through Sunday night.
• lows 56-50 highs 94-80.
• A mix of clouds and sun Monday AM, increasing clouds to mostly cloudy and cooler with a slight (20%) chance of rain in the afternoon and evening, a slight (20%) chance of showers late Monday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Tuesday, mostly cloudy with a slight (20%) chance of evening showers, a good (50%) chance of showers Tuesday night and Wednesday AM, a good (50%) chance of rain and a bit cooler in the afternoon and Wednesday night,
• Mostly cloudy with a (40%) chance of AM rain, then a bit warmer with a (40%) chance of showers Thursday afternoon.
• highs 73-68 warming back to 73 Thursday lows 50-54. (seasonal averages high 79 low 48)

______________

Your Saturday College Football Forecasts:

Ducks vs Michigan State at Spartan Stadium, East Lansing, MI- Kickoff 5 PM PDT- (8 PM EDT): Partly cloudy 57 and cooling as the game progresses, Wind- NNE 5 mph.

_____

Beavers vs Michigan at Michigan Stadium, Ann Arbor, MI -Kickoff 9 AM PDT (12 PM EDT): Partly cloudy 58 warming to 65 by the end of the game, Wind-N 10 mph.

________________

Forecast for the Umpqua Basin including Roseburg:

• Clear tonight,
• Sunny and warmer Friday, clear Friday evening, partly cloudy Friday night through Saturday night,
• Mostly sunny and cooler Sunday, then mostly clear at night.
• lows 57-60 cooling to 53 Sunday night highs 98-88.
• Sunny Monday AM, increasing clouds to mostly cloudy with a slight (20%) chance of showers in the afternoon and evening, partly cloudy with a slight (20%) chance of showers late Monday night and Tuesday, mostly cloudy with a (30%) chance of showers Tuesday night,
• Mostly cloudy and a bit cooler with rain likely (70%) Wednesday and Wednesday night,
• Mostly cloudy with a (30%) chance of showers in the AM, then a slight (20%) chance of showers Thursday afternoon,
• highs 74-67 warming to 76 Thursday lows 50-55. (seasonal averages high 80 low 52)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Clear this evening, partly cloudy late tonight,
• Mostly cloudy Friday AM, sunny in the afternoon, mostly clear in the evening, increasing clouds to mostly cloudy late Friday night,
• Cloudy in the AM, sunny Saturday afternoon, partly cloudy at night,
• Mostly sunny Sunday, then mostly clear at night.
• lows 54-57 cooling back to 54 Sunday night highs near 67.
• Partly cloudy with a slight (20%) chance of showers Monday and Monday night,
• Partly cloudy  with a slight (20%) chance of showers Tuesday AM, mostly cloudy and a bit cooler with a slight (20%) chance of showers in the afternoon, a good (50%) chance of showers at night,
• Mostly cloudy with rain likely (70%) and a bit warmer Wednesday and Wednesday night,
• Mostly cloudy with a good (50%) chance of AM rain, then a bit warmer with a good (50%) chance of showers Thursday afternoon.
• highs 67-64 warming back to 67 Thursday lows 52-56. (seasonal averages high 65 low 51).

________________

Forecast for the Cascades in Lane County:

• Clear tonight,
• Sunny and warmer Friday, clear in the evening, partly cloudy at night,
• Mostly sunny in the AM, partly cloudy and a bit cooler Saturday afternoon and Saturday night,
• Partly cloudy in the AM, mostly sunny, but cooler Sunday afternoon, then partly cloudy at night.
• free air freezing level 16,000 ft. tonight, then 15,000 ft. Friday through Sunday, then 14,000 ft. Sunday night.
• lows 48-45 highs 86-68.
• Partly cloudy Monday AM, mostly cloudy and a bit cooler  with a slight (20%) chance of showers in the afternoon and late Monday night,
• A mix of clouds and sun and cooler with a slight (20%) chance of showers Tuesday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy  with a good (50%) chance of showers Tuesday night and Wednesday AM, rain likely (60%) and a bit warmer in the afternoon and evening, a good (50%) chance of rain late Wednesday night,
• Mostly cloudy with a (40%) chance of AM rain, then a (40%) chance of showers and a bit cooler Thursday afternoon.
• snow level above 8,000 ft. Monday and Monday night, 6,500 ft. Tuesday and Tuesday night, then above 8,000 ft. Wednesday through Thursday.
• highs 62-57 warming back to 62 Thursday lows 38-45.

_______________

**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 “Rayleigh Scattering?” 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. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

An upper level high (Shaded “Arch” shape with blue arrows) is building over us and that means sunshine and warming temperatures for a while.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 31 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 9 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 29 in the Good category measuring Particulate Matter.

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

________________

Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. 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 CONTINUES FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.

________________

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

• Sunny and warmer today and Friday, clear at night,
• A mix of clouds and sun in the AM, partly cloudy and just a bit cooler Saturday afternoon, partly cloudy at night.
• highs 88-92 cooling back to 88 Saturday lows 54-56.
• Partly cloudy and cooler Sunday through Monday AM, mostly cloudy and cooler with a slight (20%) chance of rain in the afternoon, a slight (20%) chance of evening rain, a slight (20%) chance of showers late Monday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Tuesday,  partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of Tuesday, a (30%) chance of  night and Wednesday afternoon.
• highs 82-70 lows near 50. (seasonal averages high 79 low 48)

______________

Your Saturday College Football Forecasts:

Ducks vs Michigan State at Spartan Stadium, East Lansing, MI- Kickoff 5 PM PDT- (7 PM CDT): Partly cloudy 60 cooling into the 50s as the game progresses, Wind- N 10 mph.

_____

Beavers vs Michigan at Michigan Stadium, Ann Arbor, MI -Kickoff 9 AM PDT (11 AM CDT): Partly cloudy 52 warming to 65 by the end of the game, Wind-N 10 mph.

________________

Forecast for the Umpqua Basin including Roseburg:

• Sunny and warmer today and Friday, clear tonight and Friday evening, partly cloudy at night,
• Partly cloudy Saturday and Saturday night.
• highs 95-98 cooling to 92 Saturday lows 57-62 cooling back to 57 Saturday night.
• Mostly sunny and cooler Sunday, mostly clear at night,
• Sunny Monday AM, increasing clouds to mostly cloudy in the afternoon and evening, partly cloudy with a slight (20%) chance of showers late Monday night,
• Partly cloudy with a slight (20%) chance of showers Tuesday AM, mostly cloudy in the afternoon, a slight (20%) chance of showers Tuesday night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Wednesday AM, then a (40%) chance of rain Wednesday afternoon.
• highs 89-76 lows 54-52. (seasonal averages high 80 low 52)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• AM patchy fog and clouds, sunny this afternoon and Friday, partly cloudy tonight, mostly cloudy Friday night,
• AM clouds, partly cloudy Saturday and at night.
• highs near 67 lows 54-58 cooling back to 54 Saturday night.
• Mostly sunny Sunday, mostly clear at night,
• Mostly sunny Monday AM, increasing clouds to mostly cloudy in the afternoon, partly cloudy with a slight (20%) chance of shower Monday night and Tuesday, mostly cloudy with a slight (20%) chance of showers at night,
• A slight (20%) chance of showers Wednesday AM, then a (30%) chance of rain in the afternoon.
• highs 67-63 lows near 53. (seasonal averages high 65 low 51).

________________

Forecast for the Cascades in Lane County:

• Sunny and warmer today and Friday, clear at night,
• Partly cloudy and a bit cooler Saturday and Saturday night.
• free air freezing level 16,000 ft. today and tonight, then 15,000 ft. Friday through Saturday night.
• highs 78-85 cooling to back to near 80 Saturday lows 48-46.
• Partly cloudy in the AM, mostly sunny, but cooler Sunday afternoon, partly cloudy at night,
• Partly cloudy Monday AM, mostly cloudy and a bit cooler in the afternoon, mostly cloudy with a slight (20%) chance of showers late Monday night through Wednesday AM, then a (30%) chance of rain in the afternoon.
• free air freezing level 15,000 ft. and Sunday night, 12,000 ft. Monday, snow level above 8,000 ft. Monday night through Wednesday.
• highs 70-56 lows 46-40.

_______________

**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 “Rayleigh Scattering?” 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. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

An upper level high (Shaded “Arch” shape with blue arrows) is building over us and that means sunshine and warming temperatures for a while.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 72 in the Good category measuring Particulate Matter.

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

Cottage Grove: The Air Quality Index is 28 in the Good category measuring Particulate Matter.

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

________________

Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. 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 CONTINUES FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.

________________

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

• Clear tonight,
• Sunny and warmer Thursday and Friday, clear at night,
• A mix of clouds and sun in the AM, mostly sunny and just a bit cooler Saturday afternoon, partly cloudy at night.
• lows 50-55 highs 88-92 cooling back to 88 Saturday.
• A mix of clouds and sun Sunday AM, mostly sunny in the afternoon, mostly clear at night,
• Mostly sunny Monday AM, a mix of clouds and sun and cooler with a slight (20%) chance of rain in the afternoon, mostly cloudy with a slight (20%) chance of showers late Monday night,
• Partly cloudy with a slight (20%) chance of showers Tuesday, just partly Tuesday night and Wednesday afternoon.
• highs 84-77 lows near 53. (seasonal averages high 79 low 48)

______________

Forecast for the Umpqua Basin including Roseburg:

• Clear tonight,
• Sunny and warmer Thursday and Friday, clear at night,
• Mostly sunny Saturday, then mostly clear at night.
• lows 55-58 highs 94-98 cooling to 92 Saturday.
• Mostly sunny and cooler Sunday and Monday, mostly clear at night,
• Then partly cloudy and cooler with a slight (20%) chance of showers Tuesday through Wednesday.
• highs 89-78 lows 47-50. (seasonal averages high 80 low 52)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly clear tonight,
• Sunny Thursday and Friday, mostly clear at night,
• Mostly sunny Saturday, then mostly clear at night.
• lows near 55 highs near 67.
• Mostly sunny Sunday and Monday, mostly clear Sunday night, partly cloudy late Monday night,
• Partly cloudy Tuesday through Wednesday with a slight (20%) chance of showers.
• highs near 67 lows 53-48. (seasonal averages high 65 low 51).

________________

Forecast for the Cascades in Lane County:

• Clear tonight,
• Sunny and warmer Thursday and Friday, clear at night,
• Mostly sunny Saturday AM, then partly cloudy and a bit cooler in the afternoon and Saturday night.
• free air freezing level 15,000 ft. tonight through Saturday night.
• lows 46-50 highs 78-83 cooling to back to 78 Saturday.
• Mostly sunny, but cooler Sunday, mostly clear at night,
• Mostly sunny Monday AM, partly cloudy and a bit cooler in the afternoon, partly cloudy with a slight (20%) chance of showers late Monday night through Wednesday.
• free air freezing level 14,000 ft. Sunday, 15,000 ft. Sunday night and Monday, snow level above 8,000 ft. Monday night through Wednesday.
• highs 74-64 lows near 48.

_______________

**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 “Rayleigh Scattering?” 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. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

An upper level high (Shaded “Arch” shape with blue arrows) is building over us and that means sunshine and warming temperatures for a while.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 72 in the Good category measuring Particulate Matter.

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

Cottage Grove: The Air Quality Index is 28 in the Good category measuring Particulate Matter.

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

________________

Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. 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 CONTINUES FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.

________________

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

• Patchy AM clouds and fog, mostly sunny this afternoon, mostly clear tonight,
• Mostly sunny and warmer Thursday, clear Thursday night,
• Then sunny and warmer Friday, clear at night.
• highs 85-92 lows 46-55.
• Mostly Sunny and a bit cooler Saturday and Sunday, mostly clear at night,
• Mostly sunny Monday AM, partly cloudy with a slight (20%) chance of showers in the afternoon, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers Monday night,
• Then partly cloudy with a slight (20%) chance of showers Tuesday.
• highs 88-77 lows near 54. (seasonal averages high 79 low 48)

______________

Forecast for the Umpqua Basin including Roseburg:

• Partly cloudy this AM, sunny and warmer this afternoon, clear tonight,
• Sunny and warmer Thursday and Friday, clear at night.
• highs 90-98 lows 55-58.
• Mostly sunny Saturday, mostly clear at night.
• Mostly sunny and cooler Sunday and Monday, mostly clear each night,
• Then partly cloudy and cooler with a slight (20%) chance of showers Tuesday.
• highs 92-80 lows 57-48. (seasonal averages high 81 low 53)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy this AM, sunny this afternoon, mostly clear tonight,
• Sunny Thursday and Friday, then mostly clear at night.
• highs near 67 lows near 55.
• Mostly sunny Saturday, Sunday and Monday, mostly clear each night, partly cloudy late Monday night,
• Then partly cloudy Tuesday with a slight (20%) chance of afternoon showers.
• highs near 67 lows 55-49. (seasonal averages high 65 low 51).

________________

Forecast for the Cascades in Lane County:

• Sunny and warmer today, Thursday and Friday, clear at night.
• free air freezing level 15,000 ft. today through Thursday, then 16,000 ft. Thursday night through Friday night.
• highs 76-83 lows 46-50.
• Mostly sunny and a bit cooler Saturday, Sunday and Monday, mostly clear Saturday night and Sunday night, partly cloudy with a slight (20%) chance of showers late Monday night and Tuesday (much cooler).
• free air freezing level 15,000 ft. Saturday and Saturday night, 14,000 ft. Sunday, 15,000 ft. Sunday night and Monday, snow level above 8,000 ft. Monday night and Tuesday.
• highs 78-64 lows 46-48.

_______________

**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 “Rayleigh Scattering?” 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. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

An upper level high (Shaded “Arch” shape with blue arrows) is building over us and that means sunshine and warming temperatures for a while.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 33 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 30 in the Good category measuring Ozone.

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

________________

Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. 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 CONTINUES FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.

________________

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

• Mostly clear  tonight,
• Partly cloudy Wednesday, mostly clear at night,
• Mostly sunny and warmer Thursday, clear Thursday night,
• Then sunny and warmer Friday, clear at night.
• lows 49-46 warming to 55 Friday night highs 85-92.
• Mostly Sunny Saturday and Sunday, mostly clear both nights,
• Mostly sunny, but cooler Sunday, mostly clear at night,
• Mostly sunny Monday AM, then partly cloudy and a bit cooler Monday night and Tuesday.
• highs 90-77 lows near 54. (seasonal averages high 79 low 48)

______________

Forecast for the Umpqua Basin including Roseburg:

• Mostly clear tonight,
• Partly cloudy Wednesday AM, sunny and warmer in the afternoon, clear Wednesday night,
• Sunny and warmer Thursday and Friday, clear at night,
• Then mostly sunny Saturday, mostly clear at night.
• lows 56-60 highs 92-99.
• Mostly sunny and cooler Sunday and Monday, mostly clear each night,
• Then partly cloudy and cooler with a slight (20%) chance of showers Tuesday.
• highs 94-80 lows 55-48. (seasonal averages high 81 low 53)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Partly cloudy this evening, mostly cloudy late tonight and Wednesday AM, sunny and in the afternoon, mostly clear Wednesday night,
• Sunny Thursday and Friday, then mostly clear at night.
• lows 56-53 highs 72-67 warming to 70.
• Mostly sunny Saturday, Sunday and Monday, mostly clear each night, partly cloudy late Monday night,
• Then partly cloudy Tuesday with a slight (20%) chance of afternoon showers.
• highs 73-67 lows 56-53. (seasonal averages high 66 low 51).

________________

Forecast for the Cascades in Lane County:

• Partly cloudy this evening, clear late tonight,
• Mostly sunny Wednesday, mostly clear at night,
• Then sunny and a bit warmer Thursday and Friday, clear at night.
• free air freezing level 15,000 ft. tonight through Thursday, then 16,000 ft. Thursday night through Friday night.
• lows 40-50 highs 76-83.
• Mostly sunny and a bit cooler Saturday, Sunday and Monday, mostly clear Saturday night and Sunday night, then partly cloudy Monday night and Tuesday (much cooler).
• free air freezing level 15,000 ft. Saturday and Saturday night, 14,000 ft. Sunday, 15,000 ft. Sunday night and Monday, 14,000 ft. Monday night, then 10,000 ft. Tuesday.
• highs 80-64 lows 46-48.

_______________

**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 “Rayleigh Scattering?” 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. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

An upper level low (Shaded “U” shape with blue arrows) that was controlling our weather is being replaced by high pressure (Shaded “Arch” shape with blue arrows) and that means the rain is gone, for now.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 38 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 20 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 30 in the Good category measuring Particulate Matter.

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

________________

Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. 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 CONTINUES FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.

________________

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

• Mostly sunny and warmer today, Wednesday and Thursday, mostly clear each night.
• highs 84-86 lows 49-53.
• Sunny and warmer Friday and Saturday, clear Friday night, partly cloudy Saturday night,
• Mostly sunny, but cooler Sunday and Monday, mostly clear at night.
• highs 90-83 lows near 54. (seasonal averages high 79 low 49)

______________

Forecast for the Umpqua Basin including Roseburg:

• Sunny and a bit warmer today, mostly clear tonight,
• Partly cloudy Wednesday AM, sunny in the afternoon, clear Wednesday night,
• Sunny and warmer Thursday, clear at night.
• highs 89-94 lows near 55.
• Sunny and warmer Friday, clear Friday night,
• Then mostly sunny and cooler Saturday, Sunday and Monday, mostly clear each night.
• highs 102-89 lows 60-54. (seasonal averages high 81 low 53)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Sunny and a bit cooler today, partly cloudy this evening, mostly cloudy late  tonight and Wednesday AM, sunny and a bit cooler in the afternoon, mostly clear Wednesday night,
• Sunny Thursday, then mostly clear at  night.
• highs 72-67 warming to 70 lows 56-53.
• Mostly sunny and a bit warmer Friday, mostly clear at night,
• Sunny Saturday, partly cloudy late Saturday night and Sunday, mostly clear at night,
• Then mostly sunny Monday.
• highs 73-67 lows 56-53. (seasonal averages high 66 low 51).

________________

Forecast for the Cascades in Lane County:

• Mostly sunny and warmer today, Wednesday and Thursday, clear each night.
• free air freezing level 14,000 ft. today and tonight, 15,000 ft. Wednesday through Thursday, then 16,000 ft. Thursday night.
• highs 73-78 lows 40-46.
• Sunny Friday and Saturday, clear both nights,
• Mostly sunny and a bit cooler Sunday and Monday, mostly clear at night.
• free air freezing level 16,000 ft. Friday and Friday night, 15,000 ft. Saturday and Saturday night, 14,000 ft. Sunday, then 16,000 ft. Sunday night and Monday.
• highs 82-72 lows 53-48.

_______________

**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 “Rayleigh Scattering?” 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. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

An upper level low (Shaded “U” shape with blue arrows) that was controlling our weather is being replaced by high pressure (Shaded “Arch” shape with blue arrows) and that means the rain is gone, for now.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 33 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 7 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 29 in the Good category measuring Ozone.

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

________________

Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. 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 CONTINUES FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.

________________

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

• Mostly clear tonight,
• Mostly sunny and warmer Tuesday, Wednesday and Thursday, mostly clear each night.
• lows 49-52 cooling to 50 Thursday night highs 84-86.
• Sunny and warmer Friday and Saturday, clear Friday night, clear Saturday evening, partly cloudy late at night,
• Then partly cloudy in the AM, mostly sunny, but cooler Sunday and Monday, mostly clear at night.
• highs 90-92 cooling to 82 Monday lows near 54. (seasonal averages high 79 low 49)

______________

Forecast for the Umpqua Basin including Roseburg:

• Clear both tonight,
• Sunny and a bit warmer Tuesday, mostly clear at night,
• Mostly cloudy Wednesday AM, sunny in the afternoon, clear Wednesday night,
• Sunny and warmer Thursday, clear at night.
• lows 52-55 highs 89-92.
• Sunny and warmer Friday, clear Friday night,
• Then mostly sunny and cooler Saturday, Sunday and Monday, mostly clear each night.
• highs 97-88 lows 59-53. (seasonal averages high 81 low 53)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly clear tonight,
• Sunny and a bit cooler Tuesday, partly cloudy in the evening, mostly cloudy late at night and Wednesday AM, sunny and a bit cooler in the afternoon, mostly clear Wednesday night,
• Mostly sunny Thursday, then mostly clear at  night.
• lows near 54 highs 72-68.
• Sunny and a bit warmer Friday and Saturday, clear Friday night, mostly clear Saturday evening, then partly cloudy late Saturday night,
• Then mostly sunny and a bit cooler Sunday and Monday, mostly clear Sunday night.
• highs 65-70 lows 56-60. (seasonal averages high 66 low 51).

________________

Forecast for the Cascades in Lane County:

• Mostly clear tonight,
• Mostly sunny and warmer Tuesday, Wednesday and Thursday, clear each night.
• free air freezing level 12,000 ft. tonight and Tuesday, 14,000 ft. Tuesday night and Wednesday, 15,000 ft. Wednesday night and Thursday, then 16,000 ft. Thursday night.
• lows 39-46 highs 70-78.
• Sunny Friday and Saturday, clear Friday night, clear in the evening, partly cloudy late Saturday night,
• Mostly sunny and a bit cooler Sunday and Monday, mostly clear at night.
• free air freezing level 16,000 ft. Friday and Friday night, 15,000 ft. Saturday and Saturday night, 14,000 ft. Sunday, then 16,000 ft. Sunday night and Monday.
• highs 82-72 lows 50-48.

_______________

**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 “Rayleigh Scattering?” 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. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

An upper level low (Shaded “U” shape with blue arrows) that has been controlling our weather is being replaced by high pressure (Shaded “Arch” shape with blue arrows) and that means the rain is gone. The low is moving eastward as the high pressure takes over for the your Labor Day Holiday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 31 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 28 in the Good category measuring Particulate Matter.

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

________________

Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. 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 CONTINUES FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.

________________

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

• A mix of clouds and sun this AM, mostly sunny and a bit warmer this afternoon (Labor Day), partly cloudy tonight,
• Mostly sunny and warmer Tuesday, mostly clear at night,
• Partly cloudy Wednesday AM, mostly sunny and warmer in the afternoon, then mostly clear at night.
• highs 77-85 lows 49-52.
• Mostly sunny Thursday, mostly clear at night,
• Sunny and warmer Friday and Saturday, clear Friday night, mostly clear Saturday night,
• Then mostly sunny, but cooler Sunday.
• highs 86-88 cooling to 82 Sunday lows 52-54. (seasonal averages high 79 low 49)

______________

Forecast for the Umpqua Basin including Roseburg:

• Mostly cloudy this AM (Labor Day), mostly sunny and a bit warmer this afternoon and Tuesday, mostly clear both nights,
• Mostly cloudy in the AM, mostly sunny and a bit warmer Wednesday afternoon, then clear at night.
• highs 82-89 lows 52-57.
• Sunny and warmer Thursday, mostly clear Thursday night,
• Sunny Friday and Saturday, clear Friday night, mostly clear Saturday night,
• Then mostly sunny, but cooler Sunday.
• highs 94-85 lows 58-62 cooling to 57 Saturday night. (seasonal averages high 81 low 53)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with patchy fog this AM, sunny and a bit cooler this afternoon (Labor Day), mostly clear tonight,
• Sunny and a bit warmer Tuesday, mostly clear in the evening, mostly cloudy late at night and Wednesday AM, sunny and warmer in the afternoon, then mostly clear Wednesday night.
• highs near 66 lows 53-57.
• Mostly sunny and a bit warmer Thursday, Friday and Saturday (cooler), mostly clear each night,
• Then sunny and a bit cooler Sunday.
• highs 65-70 lows 56-60. (seasonal averages high 66 low 51).

________________

Forecast for the Cascades in Lane County:

• Mostly sunny and warmer today (Labor Day) and Tuesday, mostly clear at night,
• Partly cloudy Wednesday AM, mostly sunny and a bit warmer in the afternoon, then clear Wednesday night.
• free air freezing level 11,000 ft. today, 12,000 ft. tonight, 14,000 ft. Tuesday through Wednesday, then 15,000 ft. Wednesday night.
• highs 64-76 lows 42-46.
• Mostly sunny and warmer Thursday, mostly clear Thursday night,
• Sunny Friday, Saturday and Sunday (cooler), clear each night.
• free air freezing level 15,000 ft. Thursday, 16,000 ft. Thursday night through Saturday, 15,000 ft. Saturday night, then 16,000 ft. Sunday.
• highs 80-74 lows 49-52.

_______________

**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 a “Back-building thunderstorm?”  Here is the correct answer. A Back-building Thunderstorm is a  thunderstorm in which new development takes place on the upwind side (usually the west or southwest side), such that the storm seems to remain stationary or propagate in a backward direction. I’ll 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. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

An upper level low (Shaded “U” shape with blue arrows) that has been controlling our weather is being replaced by high pressure (Shaded “Arch” shape with blue arrows) and that means the rain is gone. The low is moving eastward as the high pressure takes over for the your Labor Day Holiday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 24 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 5 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 24 in the Good category measuring Ozone.

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

________________

Advisories:

• A FROST ADVISORY IS IN EFFECT FROM 1 AM UNTIL 9 AM MONDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A FREEZE WARNING IS IN EFFECT FROM  1 AM UNTIL 9 AM MONDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. 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 CONTINUES FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.

________________

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

• Mostly cloudy this evening, partly cloudy late tonight,
• A mix of clouds and sun Monday AM, mostly sunny and a bit warmer in the afternoon (Labor Day), partly cloudy at night,
• Mostly sunny and warmer Tuesday, mostly clear at night,
• Partly cloudy Wednesday AM, mostly sunny and warmer in the afternoon, then mostly clear at night.
• lows 49-52 highs 77-85.
• Mostly sunny Thursday, mostly clear at night,
• Sunny and warmer Friday and Saturday, clear Friday night, mostly clear Saturday night,
• Then mostly sunny, but cooler Sunday.
• highs 86-88 cooling to 82 Sunday lows 52-54. (seasonal averages high 79 low 49)

______________

Forecast for the Umpqua Basin including Roseburg:

• Partly cloudy this evening, mostly cloudy late tonight and Monday AM (Labor Day), mostly sunny and a bit warmer in the afternoon and Tuesday, mostly clear both nights,
• Mostly cloudy in the AM, mostly sunny and a bit warmer Wednesday afternoon, then clear at night.
• lows 52-57 highs 82-89.
• Sunny and warmer Thursday, mostly clear Thursday night,
• Sunny Friday and Saturday, clear Friday night, mostly clear Saturday night,
• Then mostly sunny, but cooler Sunday.
• highs 94-85 lows 58-62 cooling to 57 Saturday night. (seasonal averages high 81 low 53)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Partly cloudy this evening, mostly cloudy with patchy fog late tonight and Monday AM, sunny and a bit cooler Monday afternoon (Labor Day), mostly clear at night,
• Sunny and a bit warmer Tuesday, mostly clear in the evening, mostly cloudy late at night and Wednesday AM, sunny and warmer in the afternoon, then mostly clear Wednesday night.
• lows 53-56 highs near 66 .
• Mostly sunny and a bit warmer Thursday, Friday and Saturday (cooler), mostly clear each night,
• Then sunny and a bit cooler Sunday.
• highs 65-70 lows 56-60. (seasonal averages high 66 low 51).

________________

Forecast for the Cascades in Lane County:

• Partly cloudy tonight and Monday (Labor Day),  mostly sunny and warmer in the afternoon, mostly clear at night,
• Mostly sunny and a bit warmer Tuesday, mostly clear at night,
• Partly cloudy Wednesday AM, mostly sunny and a bit warmer in the afternoon, then clear Wednesday night.
• free air freezing level 11,000 ft. tonight and Monday, 12,000 ft. Monday night, 13,000 ft. Tuesday through Wednesday, then 15,000 ft. Wednesday night.
• lows 38-46 highs 64-76.
• Mostly sunny and warmer Thursday, mostly clear Thursday night,
• Sunny Friday, Saturday and Sunday (cooler), clear each night.
• free air freezing level 15,000 ft. Thursday, 15,000 ft. Thursday night, 16,000 ft. Friday through Saturday, 15,000 ft. Saturday night, then 16,000 ft. Sunday.
• highs 80-74 lows 49-52.

_______________

**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 a “Back-building thunderstorm?”  Here is the correct answer. A Back-building Thunderstorm is a  thunderstorm in which new development takes place on the upwind side (usually the west or southwest side), such that the storm seems to remain stationary or propagate in a backward direction. I’ll 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. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

An upper level low (Shaded “U” shape with blue arrows) that has been controlling our weather is being replaced by high pressure (Shaded “Arch” shape with blue arrows) and that means the rain goes away again, but there’s a slight chance of rain yet today. The low is moving eastward as the high pressure takes over for the most of long Labor Day 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 7 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 28 in the Good category measuring Particulate Matter.

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

________________

Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. 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 CONTINUES FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.

________________

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

• Mostly cloudy with a slight (20%) chance of morning rain, possible sun breaks with a slight (20%) chance of showers this afternoon, partly cloudy tonight and Monday AM, mostly sunny and a bit warmer Monday (Labor Day), mostly clear Monday night,
• Partly cloudy in the AM, mostly sunny and warmer Tuesday afternoon, then partly cloudy at night.
• highs 73-82 lows 50-52.
• Mostly sunny and warmer Wednesday, Thursday and Friday, mostly clear each night,
• Then sunny and warmer Saturday.
• highs 82-89 lows 50-53. (seasonal averages high 80 low 49)

________________

Forecast for the Umpqua Basin including Roseburg:

• Mostly cloudy with a slight (20%) chance of showers today, possible sun breaks late this afternoon, partly cloudy tonight and Monday AM (Labor Day), sunny and a bit warmer in the afternoon, clear Monday night,
• Sunny and a bit warmer Tuesday, then mostly clear at night.
• highs 77-87 lows 52-54.
• Sunny and a bit warmer Wednesday, clear at night,
• Then sunny and warmer Thursday, Friday and Saturday, clear Thursday night and Friday night.
• highs 90-95 lows 55-60. (seasonal averages high 81 low 53)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with a slight (20%) chance of showers today, partly cloudy tonight and Monday AM, sunny and a bit cooler Monday afternoon (Labor Day), mostly clear at night,
• Sunny and a bit warmer Tuesday, then mostly clear at night.
• highs near 66 lows 53-56.
• Mostly sunny and a bit warmer Wednesday and Thursday, mostly clear each night,
• Then sunny and a bit cooler Friday and Saturday, clear at night.
• highs 65-70 lows 56-60. (seasonal averages high 66 low 51).

________________

Forecast for the Cascades in Lane County:

• Partly cloudy this AM, mostly cloudy this afternoon, partly cloudy tonight,
• Mostly sunny and warmer Monday (Labor Day), mostly clear at night,
• Mostly sunny and a bit warmer Tuesday, then mostly clear at night.
• free air freezing level 10,000 ft. today, 11,000 ft. tonight and Monday, 13,000 ft. Monday night, then 14,000 ft. Tuesday and Tuesday night.
• highs 58-72 lows 38-43.
• Mostly sunny Wednesday, mostly clear at night,
• Then sunny and warmer Thursday, Friday and Saturday, clear each night.
• free air freezing level 14,000 ft. Wednesday, 15,000 ft. Wednesday night through Friday, then 16,000 ft. Friday night and Saturday.
• highs 73-80 lows 44-48.

_______________

**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.

________________