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Check out my latest Eugene Daily News Weather Or Not Column It’ll Never Get Off The Ground!

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Here is my weekly weather quiz question. What is an “Urban Heat Island?”  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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Advisories:

A HEAT ADVISORY IS IN EFFECT FROM 11 AM TODAY UNTIL 9 PM TONIGHT FOR THE ENTIRE I-5 CORRIDOR FROM PORTLAND SOUTH THROUGH EUGENE-SPRINGFIELD TO JUST SOUTH OF COTTAGE GROVE. TEMPERATURES WILL EXCEED 90 DEGREES IN THE VALLEYS INTO THE CASCADE FOOTHILLS. TAKE PRECAUTIONS BY DRINKING PLENTY OF WATER DURING ANY OUTDOOR ACTIVITIES.

A Blue-Green Algae warning continues for Dexter Reservoir, Dorena Reservoir, and Fern Ridge Reservoir, and farther away at Devils Lake. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

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An upper level high pressure ridge shaded “Arch” shape has taken over our weather for a while and will stay put through the end of the week then another upper level low pressure trough will move toward the Oregon coast to replace it. Today will also be on the humid side as the dew point will hover in the low 60s. A frontal system will edge its way into Oregon by early next week and that should start to cool us back down and possibly produce some precipitation. Autumn begins at 1:44 PM Friday September 22nd, so Summer is nearly over.

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Your Saturday College Football Forecasts:

The Ducks vs Tennessee at Autzen Stadium: Kickoff 12:30 PM – Mostly sunny, temperature near 78 warming to near 90 by the time the game is over.

The Beavers vs Utah at Rice-Eccles Stadium, Salt Lake City, Utah : Kickoff 7:00 PM (8:00 PM MDT)- Partly cloudy with a (30%) chance of showers and a slight (20%) chance of isolated afternoon and evening thunderstorms, temperature near 72 cooling a bit as the game continues.

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

• Sunny and very warm to hot today, clear this evening, partly cloudy tonight.
• Partly cloudy with patchy fog Thursday AM, partly cloudy and a bit cooler in the afternoon, partly cloudy at night.
• Mostly cloudy with patchy AM fog, mostly sunny Friday afternoon, then partly cloudy at night.
• highs 92-85 warming to near 90 again Friday lows 55-58 cooling to 54 Friday night.
• Partly cloudy Saturday AM, mostly sunny in the afternoon, mostly clear in the evening, mostly cloudy with a slight (20%) chance of  showers late Saturday night.
• Mostly cloudy with a slight (20%) chance of AM showers, a slight (20%) chance of showers and thunderstorms Sunday afternoon and evening, a slight (20%) chance of showers late Sunday night through Monday evening, then mostly cloudy with a (30%) chance of showers late Monday night and Tuesday.
• highs 90-72 lows 54-57 cooling to near 52 Monday night. (seasonal averages high 79 low 49)

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

• Cloudy with patchy AM coastal fog and a slight (20%) chance of drizzle, mostly cloudy this afternoon at the shore inland while sunny inland this afternoon, mostly clear at the shore while mostly clear inland tonight.
• Mostly cloudy with patchy AM fog Thursday, mostly cloudy with patchy fog late Thursday night.
• Mostly cloudy with patchy AM and late night fog Thursday and Thursday night.
• Cloudy with patchy AM and late night fog, partly cloudy Friday afternoon, mostly cloudy with patchy fog Friday night.
• highs near 66 lows 55-58.
• Cloudy with patchy fog Saturday AM, partly cloudy in the afternoon and evening, mostly clear in the evening, mostly cloudy with a slight (20%) chance of showers late Saturday night.
• Mostly cloudy with a slight (20%) chance of showers Sunday through Monday night.
• Mostly cloudy with a (30%) chance of showers Tuesday.
• highs 70-68 lows 59-55. (seasonal averages high 66 low 51)

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Forecast for the Cascades of Lane County:

• Sunny today, clear again at night.
• Mostly sunny Thursday AM, partly cloudy in the afternoon through Friday night.
• free air freezing level 15,000 ft. today, 15,000 ft. falling to 14,000 ft. tonight, 14,000 ft. Thursday through Friday night.
• highs 83-80 lows 52-50.
• Mostly sunny Saturday AM, partly cloudy in the afternoon, partly cloudy with a slight (20%) chance of showers late Saturday night.
• A mix of clouds and sun with a slight (20%) chance of AM showers,  a slight (20%) chance of showers and thunderstorms Sunday afternoon, mostly cloudy with a slight (20%) chance of showers and thunderstorms in the evening, a slight (30%) chance of showers late Sunday night.
• A mix  of clouds and sun with a slight (20%) chance of showers Monday, partly cloudy in the evening, then mostly cloudy with a slight (20%) chance of showers Monday night and Tuesday AM, then a (30%) chance of showers Tuesday afternoon.
• free air freezing level 14,000 ft. Saturday and Saturday evening, snow level above 8,000 ft. late Saturday night through Monday night, then 7,500 ft. Tuesday.
• highs 82-58 lows 50-44.

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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 Eugene Daily News.com.

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