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Check out my latest Eugene Daily News Weather Or Not Column Whose Fault Is It? Could it be El Nino, La Nina, Or Even La Nada?

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Here is my weekly weather quiz question. What is an “Alberta Clipper?” 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. That trough will keep us in a wet weather pattern for most of this week. A cold front will be approaching the Oregon coast by the end of the week. Autumn begins at 1:44 PM next Sunday September 22nd along with the Full Blue Moon (the full moon closest to the Autumnal Equinox), so Summer is nearly over.

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

• Mostly cloudy with a good (50%) chance of showers late tonight (under 0.10 in. of rain possible).
• Showers likely (60%) Tuesday AM, a mix of clouds and sun with a good (50%) chance of showers in the afternoon (0.10 in. of rain possible), a (40%) chance of evening showers, mostly cloudy late Tuesday night and Wednesday AM, a mix of clouds and sun in the afternoon, mostly clear Wednesday night.
• Patchy AM fog, mostly sunny Thursday afternoon, then partly cloudy Thursday night.
• lows 55-46 highs 67-78.
• Partly cloudy Friday AM, cloudy with a good (50%) chance of rain Friday afternoon through Saturday AM, a good (50%) chance of showers in the afternoon and evening, mostly cloudy with a slight (20%) chance of showers late Saturday night and Sunday AM, a (40%) chance of rain Sunday afternoon through Monday AM, then a (40%) chance of showers Monday afternoon.
• highs 75-66 warming to 70 Monday lows 55-50 warming to 55 Tuesday. (seasonal averages high 77 low 47)

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

• Partly cloudy with a (30%) chance of showers this evening, mostly cloudy with a (40%) chance of showers and a slight (20%) chance of thunderstorms late tonight with patchy fog late at night (under 0.10 in. of rain possible),
• Cloudy with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Tuesday AM, a (30%) chance of showers in the afternoon (under 0.10 in. of rain possible), partly cloudy with a slight (20%) chance of showers in the evening, just mostly cloudy late Tuesday night.
• Partly cloudy Wednesday AM, sunny in the afternoon, mostly clear at night.
• Sunny Thursday AM, partly cloudy in the afternoon, partly cloudy with a slight (20%) chance of rain late Thursday night,
• lows 57-52 highs 65-68.
• Partly cloudy with a (30%) chance of AM rain, cloudy with rain likely (60%) and cooler Friday afternoon, then cloudy with rain likely (70%) Friday night.
• Mostly cloudy with rain likely (60%) Saturday AM, a (30%) chance of showers in the afternoon and Saturday night night.
• Mostly cloudy with a slight (20%) chance of AM showers Sunday, then a slight (20%) chance of rain Sunday afternoon.
• Then cloudy with a (40%) chance of rain Monday.
• highs 66-63 warming to 67 Monday lows 58-55 (seasonal averages high 65 low 50)

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Forecast for the Cascades of Lane County:

• Partly cloudy this evening, mostly cloudy with a good (50%) chance of showers late tonight (under 0.10 in. of rain possible).
• Mostly cloudy with showers likely (60%) Tuesday (0.25 in. of rain possible), a good (50%) chance of showers Tuesday night (under 0.10 in. of rain possible).
• Partly cloudy Wednesday AM, mostly sunny in the afternoon, clear Wednesday night, mostly sunny Thursday, then partly cloudy Thursday night.
• snow level above 8,000 ft. tonight and Tuesday, 6,500 ft. Tuesday night, free air freezing level 8,000 ft. rising to 10,000 ft. Wednesday afternoon, 11,000 ft. Wednesday night, 13,000 ft. Thursday, then 12,000 ft. Thursday night.
• lows 44-36 warming to near 40 Thursday highs 54-70.
• Partly cloudy Friday AM, becoming mostly cloudy with rain likely (60%) in the afternoon and evening, a good (50%) chance of rain late Friday night and Saturday AM, a (40%) chance of showers in the afternoon, a good (50%) chance of showers late Saturday night.
• Mostly cloudy with a (30%) chance of showers Sunday AM, a (40%) chance of rain Sunday afternoon through Monday AM, then mostly cloudy with a (40%) chance of showers Monday afternoon.
• snow level above 8,000 ft. Friday and Friday evening, above 8,000 ft. falling to 7,000 ft. late at night, then 7,000 ft. Saturday through Monday.
• highs 63-48 warming to 55 Sunday and Monday lows 42-38 warming to near 43 Sunday night.

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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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