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Check out my latest Eugene Daily News Weather Or Not Column It Is Really A Small World After All.

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And don’t forget my latest feature story in the continuing series on service club organizations called “Assistance” Is Their First Name.

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Sorry, no winner this week. Here is my weekly weather quiz question for the last time. What is the “exosphere ?” Here is the correct answer. The Exosphere is the upper most layer of the earth’s atmosphere; the only layer where atmospheric gases can escape into outer space. 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) continues to send cold air south to Oregon. A frontal system pushed through last night bringing rain. Another frontal system dropped down from the northwest today and the cold air behind that front will drop temperatures to cold levels, but it won’t be the coldest of the season so far. That was 20 degrees for Eugene on November 17th.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 18 in the Good category measuring Particulate Matter at Amazon Park, Eugene. Data courtesy of Lane Regional Air Protection Agency (LRAPA) Oakridge:

The Air Quality Index is 15 in the Good category measuring Particulate Matter at Willamette Activity Center, Oakridge. Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Home Wood Heating Advisory:

Eugene/Springfield: GREEN – burning is allowed.

Oakridge: GREEN – burning is allowed.

(The use of Pellet stoves is always allowed.)

Advisory Courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

• A WIND ADVISORY IS IN EFFECT FROM 1 AM SUNDAY UNTIL 4 AM MONDAY FOR THE GREATER PORTLAND METRO AREA.
• A FREEZE WARNING IS IN EFFECT FROM 1 AM UNTIL 8 AM SUNDAY FOR THE SOUTH CENTRAL OREGON COAST.
• A HEALTH ADVISORY CONTINUES FOR THE PRESENCE OF BLUE-GREEN ALGAE AT DEVILS LAKE IN LINCOLN COUNTY. THE TOXIC ALGAE BLOOM MEANS THAT PEOPLE SHOULD NOT DRINK OR HAVE DIRECT CONTACT WITH THE AFFECTED WATER AND THAT ALSO GOES FOR ANY PETS.

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Your College Football Weather Forecast: 

The Pac-12 Championship Game: Friday December 5th – Ducks vs Arizona at Levi’s Stadium, Santa Clara, California. Kickoff 6:00 PM: Preliminary Forecast.. Cloudy with a (40%) chance of showers, temperature near 64 slowly falling throughout the game.

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

• Partly cloudy with a slight (20%) chance of isolated rain and snow showers this evening, just partly and colder  tonight,
• Mostly sunny and a bit cooler Sunday, becoming partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain and freezing rain late Sunday night (under 0.10 in. of rain possible),
• Mostly cloudy AM rain and freezing rain likely (60%), rain and a bit warmer Monday afternoon (0.30 in. of rain possible) and at night (0.35 in. of rain possible),
• Cloudy with a good (50%) chance of showers and a bit warmer Tuesday, then mostly cloudy with a slight (20%) chance of showers  at night.
• lows 26-36 highs 40-46.
• Cloudy with a (40%) chance of showers Wednesday, then cloudy with a good (50%) chance of rain and warmer Wednesday night through Saturday.
• highs 48-52 lows 39-36. (seasonal averages high 48 low 35).

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Forecast for the Umpqua Basin including Roseburg:

• Mostly cloudy this evening,  partly cloudy with patchy fog and freezing fog and colder late tonight,
• Sunny Sunday, becoming mostly cloudy with a good (50%) chance of showers at night (0.10 in. of rain possible),
• Mostly cloudy with AM showers likely (60%), showers and a bit warmer Monday afternoon and evening (under 0.10 in. of rain possible), rain likely (60%) Monday night (under 0.10 in. of rain possible) and Tuesday, then mostly cloudy with a good (50%) chance of showers Tuesday night.
• lows 33-45 cooling to 42 Tuesday night highs 44-52.
• Cloudy with a (40%) chance of showers Wednesday, cloudy with a (30%) chance of rain Wednesday night and Thursday, mostly cloudy with a (40%) chance of rain at night,
• Cloudy with a (40%) chance of rain Friday and Friday night,
• Then mostly cloudy with a slight (20%) chance of showers Saturday.
• highs 53-50 lows 42-39. (seasonal averages high 49 low 38)

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

• Partly cloudy this evening, becoming clear and colder late tonight with patchy freezing fog,
• Mostly cloudy Sunday AM, sunny in the afternoon, becoming mostly cloudy with a good (50%) chance of showers Sunday night (under 0.10 in. of rain possible),
• Mostly cloudy with AM showers likely (70%), rain and warmer Monday afternoon and evening (0.45 in. of rain possible), rain likely (70%) late at night (0.25 in. of rain possible),
• Mostly cloudy with rain likely (70%) Tuesday AM, showers in the afternoon, a good (50%) chance of showers Tuesday night.
• lows 32-46 cooling to 43 Tuesday night highs 48-53.
• Cloudy with a (40%) chance of showers Wednesday, a good (50%) chance of rain Wednesday night and Thursday, mostly cloudy with a good (50%) chance of rain Thursday night,
• Cloudy with a (40%) chance of rain Friday and at night,
• Then mostly cloudy and a bit cooler with a (30%) chance of showers Saturday.
• highs 55-52 lows near 45. (seasonal averages high 52 low 41)

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a slight (20%) chance of isolated snow showers this evening, mostly clear and colder late tonight,
• Mostly sunny Sunday, becoming partly cloudy in the evening, mostly cloudy with a (40%) chance of rain and snow late at night (0.10 in. of rain possible),
• Mostly cloudy with rain and snow and warmer Monday, a good (50%) chance of rain and snow in the evening, then rain and snow likely (70%) late Monday night,
• Cloudy with a good (50%) chance of rain Tuesday, then mostly cloudy with a (40%) chance of showers at night.
• free air freezing level at the surface late tonight and Sunday, snow level 4,000 ft. Sunday night, 5,500 ft. rising to 6,500 ft. Monday afternoon, 6,500 ft. Monday night, 7,000 ft. Tuesday, then 7,500 ft. Tuesday night.
• lows 15-32 highs 30-42.
• Cloudy with (40%) chance of showers Wednesday, a good (50%) chance of rain Wednesday night through Thursday night,
• A (40%) chance of rain Friday, a (40%) chance of rain and snow Friday night,
• Then cloudy with a (40%) chance of rain and snow showers Saturday.
• snow level 6,500 ft. Wednesday, 7,000 ft. Wednesday night, 6,500 ft. Thursday through Friday, 5,500 ft. Friday night, then 5,000 ft. Saturday.
• highs near 40 lows 32-29.

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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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