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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 FREEZE WARNING AND A FROST ADVISORY ARE IN EFFECT FROM 1 AM UNTIL 8 AM WEDNESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND FOR WESTERN, CENTRAL, AND EASTERN LAKE COUNTY. A FREEZE WATCH IS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND FOR WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.

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 evening showers likely (60%), a (40%) chance of showers late this evening, a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
• Cloudy Wednesday AM, a mix of clouds and sun in the afternoon, mostly clear with areas of fog late Wednesday night.
• Partly cloudy with patchy AM fog, mostly sunny Thursday afternoon, partly cloudy with patchy fog late Thursday night.
• A mix of clouds and sun with a slight (20%) chance of AM rain, cloudy with a good (50%) chance of rain Friday afternoon, evening rain, then showers likely (60%) late Friday night.
• lows 52-44 warming to 48 Friday night highs 73-80 cooling to 75 Friday.
• Mostly cloudy with showers likely (60%) Saturday and in the evening, mostly cloudy with a slight (20%) chance of showers late Saturday night.
• Mostly cloudy with a (30%) chance of rain Sunday, good (50%) chance of rain Sunday night and Monday, a (40%) chance of rain Monday night.
• Then mostly cloudy with a good (50%) chance of showers Tuesday.
• highs 70-66 warming to 70 Monday lows 55-50 warming to 55 Monday. (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 slight (20%) chance of showers this evening, just partly cloudy late tonight.
• Partly cloudy Wednesday AM, sunny in the afternoon, mostly clear Wednesday night.
• Sunny Thursday, mostly clear in the evening, mostly cloudy Thursday night with a slight (20%) chance of coastal rain late,
• Mostly cloudy with a (30%) chance of AM rain, rain and cooler Friday afternoon and evening, mostly cloudy with showers late Friday night.
• lows 53-56 highs 69-66.
• Mostly cloudy with showers Saturday, showers likely (60%) chance in the evening, a slight (20%) chance of showers late Saturday night.
• Mostly cloudy with a slight (20%) chance of AM showers Sunday, a (40%) chance of rain Sunday afternoon, cloudy with rain likely (70%) Sunday night.
• Cloudy with a good (50%) chance of rain Monday, mostly cloudy with a (40%) chance of rain at night.
• Then mostly cloudy with a (40%) chance of showers Tuesday.
• highs 64-66 cooling to 63 Tuesday lows near 55. (seasonal averages high 65 low 50)

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Forecast for the Cascades of Lane County:

• Mostly cloudy with showers and a slight (20%) chance of thunderstorms this evening, a good (60%) chance of showers late tonight (0.10 in. of rain possible).
• A mix of clouds and sun Wednesday AM, mostly sunny and warmer in the afternoon, clear Wednesday night.
• Mostly sunny and warmer Thursday, partly cloudy Thursday night and Friday AM, rain likely (60%) in the afternoon, rain in the evening, then showers likely (60%) late Friday night.
• snow level 6,500 ft. tonight, free air freezing level 8,000 ft. Wednesday, 10,000 ft. rising to 12,000 ft. Wednesday night, 13,000 ft. Thursday, 13,000 ft. falling to 12,000 ft. Thursday night, 11,000 ft. Friday AM, snow level above 8,000 ft. in the afternoon, then snow level 7,500 ft. Friday night.
• lows 38-40 highs 60-69 cooling to 65 Friday.
• Mostly cloudy with showers likely (60%) Saturday, showers likely (60%) in the evening, a good (50%) chance of showers late Saturday night.
• Mostly cloudy with a (40%) chance of rain Sunday, a good (50%) chance of rain Sunday night,
• Cloudy with a good (50%) chance of rain Monday, a (40%) chance of rain at night.
• Then mostly cloudy with a (40%) chance of showers Tuesday.
• snow level 7,000 ft. Saturday and Saturday night, 7,500 ft. Sunday, 7,000 ft. Sunday night, then 8,000 ft. Monday through Tuesday.
• highs 57-53 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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