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Check out my latest Eugene Daily News Weather Or Not Column Remember, The First “Marathon Man” Finished Both The Race And His Life.

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Here is my new weekly weather quiz question. What is a “wall cloud?”  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: There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir has just been added to the list. 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 low (“U” shape with blue arrows) has moved to the south away from us and will move eastward through California. A weakening cold front will move through Oregon on the heals of a cold front that already slid by and have little or no effect. The upper airflow will be coming from just about due-West which is called “Zonal Flow.” The net result will be pretty stable and warm temperatures.

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The Grass Pollen Count is listed as Absent at 0 and Tree pollen is Low at 2 as of 8/14/13 according to Oregon Allergy Associates.

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

Sunny today and mostly clear late tonight.

Mostly sunny Tuesday and Wednesday, with mostly clear skies Tuesday night and partly cloudy Wednesday night.

highs 86-90 lows near 54-50 warming to 56 Wednesday night.

Partly cloudy Thursday through Friday evening, mostly cloudy late at night and Saturday AM, then partly cloudy Saturday afternoon and evening, mostly cloudy late Saturday night.

Just a mix of clouds and sun again Sunday.

highs 86-82 lows 56-54. (seasonal averages high 83 low 51)

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Forecast for the Umpqua Basin including Roseburg:

Sunny with areas of smoke today, mostly clear with more patchy smoke tonight.

Partly cloudy with areas of smoke Tuesday AM, sunny with more smoke in the afternoon, mostly clear with patchy smoke Tuesday night.

Partly cloudy with more patchy smoke and a slight (20%) chance of thunderstorms Wednesday and Wednesday night.

highs 92-89 warming to 92 Wednesday lows 58-62.

Partly cloudy with areas of smoke and a slight (20%) chance of thunderstorms Thursday and Thursday night.

Sunny with areas of smoke Friday, partly cloudy with areas of smoke and patchy fog Friday evening, patchy fog late at night and Saturday with more patchy smoke, mostly clear in the evening, partly cloudy with patchy smoke late Saturday night, then just partly cloudy Sunday.

highs 87-85 lows 57-60. (seasonal averages high 84 low 55)

 

 

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

Partly cloudy with patchy coastal fog this AM, mostly clear this evening, becoming mostly cloudy and breezy (wind: N 15-25 mph at the shore decreasing to N 10-15 mph late at night and N 10-15 mph inland).

Mostly cloudy Tuesday AM, sunny Tuesday afternoon, mostly clear in the evening,  and partly cloudy late Tuesday night. Partly cloudy with a slight (20%) chance of thunderstorms Wednesday and Wednesday night.

highs 68-65 lows near 55.

Partly cloudy with a slight (20%) chance of thunderstorms Thursday, partly cloudy Thursday night and Friday, mostly cloudy with patchy fog Friday night through Saturday night.

Then mostly cloudy with a slight (20%) chance of showers Sunday.

highs near 66-62 lows 52-55. (seasonal averages high 66 low 53)

 

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Forecast for the Cascades of Lane County:

Sunny today, clear tonight.

Mostly sunny Tuesday AM, partly cloudy in the afternoon and Tuesday night.

Mostly sunny Wednesday AM, a mix of clouds and sun with a slight (20%) chance of afternoon and evening thunderstorms, then a slight (20%) chance of showers and thunderstorms late Wednesday night.

free air freezing level 16,000 ft. today through Tuesday, 16,000 ft. falling to 15,000 ft.  Tuesday night, 15,000 ft. Wednesday and in the evening, then snow level above 8,000 ft. late at night.

highs 74-79 lows 49-52.

A mix of clouds and sun with a slight (20%) chance of showers and thunderstorms Thursday and in the evening, partly cloudy at night. with a slight (20%) chance of thunderstorms, partly cloudy at night.

Mostly sunny Friday AM, partly cloudy in the afternoon through Saturday night, then partly cloudy with a slight (20%) chance of showers Sunday afternoon.

snow level above 8,000 ft. Thursday and Thursday evening, free air freezing level 13,000 ft. late at night and Friday, 13,000 ft. falling to 12,000 ft. late Friday night and Saturday, 12,000 ft. rising to 13,000 ft. late Saturday night and Sunday AM, then snow level above 8,000 ft. Sunday afternoon.

highs near 74-69 lows 52-46.

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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 Eugene Daily News.com.

 

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