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Check out my latest Eugene Daily News Weather Or Not Column It Takes More Than Just Flipping A Coin.

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And don’t forget my latest feature story in the continuing series on service club organizations called “Buffalo Isn’t Only Known For Its Wings.”

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Here is my new weekly weather quiz question. What is “radiational cooling?” 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.

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An upper level trough of low pressure (Shaded “U” shape with blue arrows) will  swing to the south and east at us increasing the onshore airflow. That will continue the cooling trend and hopefully scour out the smoke from the wildfires that surround us. As the winds shifted more from the Southwest smoke from the wildfire west of Cottage Grove moved in particularly in the South Hills of Eugene. The increased onshore airflow could mix the air enough to cut back the smokey haze. The Full Harvest Moon takes place at 6:38 PM this evening. It’s also the third super moon. Won’t be another one for quite a while.

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Advisories:

• A RED FLAG WARNING IS IN EFFECT UNTIL 11  PM TODAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE LOWER COLUMBIA BASIN OF OREGON AND THE CENTRAL MOUNTAINS OF OREGON.
• A HEALTH ADVISORY CONTINUES FOR THE PRESENCE OF BLUE-GREEN ALGAE FOR WALTERVILLE POND IN LANE COUNTY AND AT DEVILS LAKE IN LINCOLN COUNTY. THE TOXIC ALGAE BLOOM MEANS THAT PEOPLE SHOULD NOT HAVE DIRECT CONTACT WITH THE AFFECTED WATER AND THAT ALSO GOES FOR ANY PETS.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 60 in the Moderate category measuring Particulate Matter at Springfield City Hall. Data courtesy of Lane Regional Air Protection Agency (LRAPA)

Oakridge: The Air Quality Index is 108 in the Unhealthy for Sensitive Groups category measuring Particulate Matter at Willamette Activity Center, Oakridge. Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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

• Mostly sunny today, partly cloudy this evening, mostly cloudy late tonight (smoke dissipated?),
• Mostly cloudy in the AM, partly cloudy Tuesday afternoon, mostly clear Tuesday night,
• Partly cloudy in the AM, sunny Wednesday afternoon, then clear at night.
• highs 80-76 warming to 82 Wednesday lows 52-46.
• Sunny Thursday, Friday and Saturday, and Sunday, clear each night.
• highs 86-88 cooling back to 86 Saturday and Sunday lows 47-55. (seasonal averages high 79 low 49)

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Forecast for the Umpqua Basin including Roseburg:

• Patchy AM smoke, sunny this afternoon, mostly clear this evening, mostly cloudy late tonight,
• Mostly cloudy Tuesday AM, sunny in the afternoon, mostly clear Tuesday night,
• Sunny Wednesday, then clear at night.
• highs 88-78 warming to 86 Wednesday lows 55-50 warming back to 52 Wednesday night.
• Sunny Thursday, Friday, Saturday and Sunday, clear each night.
• highs 92-90 lows near 55. (seasonal averages high 81 low 53)

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

• Mostly cloudy with patchy AM fog, partly cloudy this afternoon, and evening, mostly cloudy tonight and Tuesday AM, partly cloudy in the afternoon and Tuesday night,
• Partly cloudy in the AM, sunny Wednesday afternoon, then clear at night.
• highs 64-66 lows 56-53.
• Mostly sunny Thursday, Friday, Saturday, and Sunday, mostly clear each night.
• highs near 69 lows near 53. (seasonal averages high 65 low 51)

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Forecast for the Cascades in Lane County:

• Mostly sunny today, partly cloudy this evening, mostly cloudy and cooler late tonight,
• Mostly cloudy Tuesday AM, party cloudy in the afternoon, mostly clear Tuesday night,
• Sunny Wednesday, then clear at night.
• free air freezing level 13,000 ft. today and tonight, 14,000 ft. Tuesday and Tuesday night, then 15,000 ft. Wednesday and Wednesday night.
• highs 72-65 warming back to 72 Wednesday lows 43-40.
• Sunny Thursday, Friday, Saturday, and Sunday, clear each night.
• free air freezing level 15,000 ft. Thursday through Saturday, then 14,000 ft. Saturday night and Sunday.
• highs 72-78 cooling back to 72 Saturday night lows 48-45.

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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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