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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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Sorry, no winner this week. Here is my weekly weather quiz question for the last time. What is an “Urban Heat Island?” Here is the correct answer. An “Urban Heat Island” is the increased air temperatures in urban areas in contrast to cooler surrounding rural areas. It is caused by the solar radiation in the city being reflected back to the streets from the glass and concrete buildings and being held by the pavement.  I’ll have a new weekly weather quiz 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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Advisories:

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 trough of low pressure (Shaded “U” shape offshore) is moving toward the Oregon coast to replace the high pressure ridge (Shaded “Arch” shape) that gave us way above normal temperatures. So, your Saturday didn’t turn out the way I thought it would. The clouds got stuck in the South Willamette Valley as they have been known to do and we never heated up to my predicted high, 74 instead of 89. A cold front will be approaching the Oregon coast by the end of next week. Autumn begins at 1:44 PM next Sunday September 22nd, so Summer is nearly over.

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

• Cloudy with a good (50%) chance of drizzle this AM, a mix of clouds and sun with showers likely (60%) this afternoon (under 0.10 in. of rain possible), cloudy with a good (50%) chance of showers late tonight (under 0.10 in. of rain possible).
• Mostly cloudy with a (40%) chance of AM showers, a slight (20%) chance of showers Monday afternoon (under 0.10 in. of rain possible), and evening, a slight (20%) chance of showers late Monday night (under 0.10 in. of rain possible).
• Mostly cloudy with a good (50%) chance of showers Tuesday, a (40%) chance of showers in the evening, then a slight (20%) chance of showers late Tuesday night.
• highs 73-69 lows 56-49.
• A mix of clouds and sun Wednesday, partly cloudy Wednesday night through Thursday evening, mostly cloudy with a (30%) chance of showers late Thursday night,
• A mix of clouds and sun Friday AM, cloudy with a good (50%) chance of showers in the afternoon, then mostly cloudy with a good (50%) chance of showers Friday night, then showers likely (60%) Saturday.
• highs 75-80 cooling to 69 Friday lows 50-55. (seasonal averages high 78 low 47)

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

• Mostly cloudy with patchy AM fog and a (40%) chance of scattered showers today (under 0.10 in. of rain possible), patchy fog with a (30%) chance of showers tonight.
• Patchy AM fog, mostly cloudy with a slight (20%) chance of showers Monday afternoon (0.10 in. of rain possible) and Monday night with patchy fog late at night (under 0.10 in. of rain possible),
• Mostly cloudy with patchy fog and a (30%) chance of showers Tuesday AM, showers likely (60%) in the afternoon, a slight (20%) chance of showers Tuesday night.
• highs 65-69 cooling down to 65 Tuesday night lows 59-53.
• Partly cloudy Wednesday and Wednesday night.
• Partly cloudy in the AM, mostly cloudy  Thursday afternoon, a (40%) chance of rain Thursday night,
• Cloudy with a (30%) chance of rain Friday and Friday evening, a good (50%) chance of rain at night.
• Then cloudy with a good (50%) chance of rain Saturday.
• highs 67-65 lows 54-58. (seasonal averages high 65 low 50)

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Forecast for the Cascades of Lane County:

• Showers likely (60%) with a slight (20%) chance of thunderstorms this afternoon and evening, a (40%) chance of showers and cooler late tonight.
• Mostly cloudy with a slight (20%) chance of AM showers, a mix of clouds and sun Monday with a slight (20%) chance of afternoon showers, mostly cloudy with a slight (20%) chance of rain in the afternoon, then a slight (20%) chance of showers late Monday night.
• Mostly cloudy with a slight (20%) chance of showers Tuesday AM, showers likely (60%) in the afternoon, a (40%) chance of showers in the evening, then partly cloudy with a slight (20%) chance of rain late Tuesday night.
• snow level above 8,000 ft. today through Monday night, above 8,000 ft. falling to 8,000 ft. Tuesday, then 7,500 ft. Tuesday night.
• highs 62-56 lows 46-40.
• Partly cloudy with a slight (20%) chance of rain Wednesday AM, partly cloudy Wednesday afternoon through Thursday evening, mostly cloudy with a (30%) chance of showers Thursday night.
• A mix of clouds and sun Friday AM, cloudy with a good (50%) chance of showers in the afternoon, mostly cloudy with a good (50%) chance of showers in the evening, showers likely (60%) late Friday night.
• Then mostly cloudy with showers likely (60%) Saturday.
• snow level above 7,500 ft. Wednesday AM, free air freezing level 10,000 ft. in the afternoon, 10,000 ft. rising to 11,000 ft. late at night, 11,000 ft. rising to 12,000 ft. Thursday afternoon and evening, snow level above 8,000 ft. late Thursday night, above 8,000 ft. falling to 8,000 ft. Friday afternoon, 8,000 ft. falling to 7,000 ft. late Friday night and Saturday.
• highs 65-70 cooling to 55 Saturday lows near 42.

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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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