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Check out my latest Eugene Daily News Weather Or Not Column Oregon Was The First State To Make It A Holiday.

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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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Sorry, but no winner this week. Here is my weekly weather quiz question for the last time. What is  “popcorn convection?” Here is the correct answer. Popcorn Convection is slang for showers and thunderstorms that form on a scattered basis with little or no apparent organization, usually during the afternoon in response to diurnal heating. Individual thunderstorms typically are of the type sometimes referred to as air-mass thunderstorms: they are small, short-lived, very rarely severe, and they almost always dissipate near or just after sunset. 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.

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An upper level high pressure ridge (Shaded “Arch” shape with blue arrows) will be weakening and followed by a trough of low pressure that will swing to the south at us about midweek. In the meantime a thermal low pressure trough (red “L” with dashed vertical line on west coast on this surface map) will move east of the Cascades followed by some upper level disturbances. The airflow over the South Willamette Valley has shifted from the southwest bringing even more smoke into the valley.

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Advisories:

• A RED FLAG WARNING IS IN EFFECT FROM 1 PM UNTIL 8 PM TODAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EAST SLOPES OF THE NORTHERN CASCADES.
• 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 85 in the Moderate category measuring Particulate Matter at HWY 99, Eugene. Data courtesy of Lane Regional Air Protection Agency (LRAPA)

Oakridge: The Air Quality Index is 63 in the Moderate 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:

• Sunny and cooler today, clear tonight,
• Partly cloudy and cooler Monday through Tuesday night.
• highs 85-78 lows near 52.
• Partly cloudy Wednesday AM, mostly sunny and warmer Wednesday afternoon and Thursday, mostly clear Wednesday night, clear Thursday night.
• Sunny Friday and Saturday, clear at night.
• highs 85-89 cooling back to 85 Saturday lows near 54. (seasonal averages high 79 low 49)

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Forecast for the Umpqua Basin including Roseburg:

• Sunny with patchy smoke today, patchy evening smoke, clear late tonight,
• Sunny Monday, mostly clear in the evening, partly cloudy late Monday night,
• Mostly cloudy Tuesday AM, partly cloudy in the afternoon, then clear Tuesday night.
• highs 93-78 lows 53-56 cooling to 52 Tuesday night.
• Sunny Wednesday, Thursday, and Friday, clear Wednesday night and Thursday night, mostly clear Friday night.
• Then mostly sunny Saturday.
• highs 86-92 cooling to 88 Saturday lows 53-55. (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 areas patchy fog coastal fog this afternoon while areas of AM fog and sunny inland this afternoon, mostly cloudy with patchy coastal fog late while clear in the evening and partly cloudy inland late tonight,
• Mostly cloudy with patchy AM coastal fog while partly cloudy with patchy AM fog inland Monday and sunny inland in the afternoon, mostly cloudy Monday night and Tuesday AM, partly cloudy in the afternoon, then mostly clear Tuesday night.
• highs 63-66 cooling back to 63 Tuesday night lows 52-55.
• Sunny Wednesday and Thursday, clear at night,
• Mostly sunny Friday, mostly clear at night,
• Then partly cloudy Saturday AM, sunny in the afternoon.
• highs 66-69 lows near 55. (seasonal averages high 66 low 51)

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Forecast for the Cascades in Lane County:

• Mostly sunny today, clear and cooler tonight,
• Sunny in the AM, partly cloudy and cooler Monday afternoon, partly cloudy Monday night through Tuesday night.
• free air freezing level 13,000 ft. today through Monday night, then 14,000 ft. Tuesday and Tuesday night.
• highs 77-66 lows 49-44.
• Partly cloudy Wednesday AM, mostly sunny in the afternoon and Thursday, mostly clear both nights,
• Sunny Friday and Saturday, clear Friday night.
• free air freezing level 15,000 ft. Wednesday night through Friday night, then 14,000 ft. Saturday.
• highs 74-76 cooling to 72 Friday night lows near 46.

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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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