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Tim Chuey Weather
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Check out my latest Eugene Daily News Weather Or Not Column It’s Just Not The Same, And That’s Too Bad.

 

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Here is my new weekly weather quiz question. The city of San Francisco, CA has it’s own “air conditioner” caused by upwelling. What is “upwelling” and how does it keep the area cool? 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 FROST ADVISORY IS IN EFFECT UNTIL 9 AM TODAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
  • A FREEZE WARNING IS IN EFFECT UNTIL 9 AM TODAY FOR THE ENTIRE I-5 CORRIDOR FROM PORTLAND THROUGH EUGENE-SPRINGFIELD.
  • A FROST ADVISORY IN IN EFFECT UNTIL 9 AM TODAY FOR THE SOUTH CENTRAL OREGON COAST AND CENTRAL DOUGLAS COUNTY.
  • A FREEZE WARNING IS IN EFFECT UNTIL 9 AM TODAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.

 

A Blue-Green Algae warning continues for Tenmile Lakes in Coos County, Fern Ridge Reservoir, Lost Creek Lake,  and  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 low (Shaded “U” shape) is sliding through the Pacific Northwest bringing colder air and some blustery conditions along with the chance of rain. Be prepared for the chance of wet weather Thursday so your “Trick-or-Treaters” stay warm and dry.

 

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

  • Clear with areas of frost, patchy fog, and possible freezing fog early this AM, sunny this afternoon, mostly clear with areas of frost and patchy fog late tonight.
  • Patchy AM fog and frost, a mix of clouds and sun Wednesday afternoon, cloudy with a slight (20%) chance of rain in the evening, a (30%) chance of rain late Wednesday night,
  • Cloudy with a (40%) chance of rain Thursday (Halloween), then a slight (20%) chance of rain late Thursday night,
  • highs 55-60 lows 30-43 cooling to 39 Thursday night.
  • Mostly cloudy Friday, mostly cloudy with rain likely (60%) Friday and Friday night,
  • Rain likely (70%) Saturday, cloudy with a good (50%) chance of showers at night,
  • Mostly cloudy with a good (50%) chance of showers Sunday, a (40%) chance of showers Sunday night,
  • Then mostly cloudy with a good (50%) chance  of showers Monday.
  • highs 59-50 lows 40-38. (seasonal averages high 58 low 40)
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Forecast for the Umpqua Basin including Roseburg:

  • Areas of AM frost and patchy fog, sunny this afternoon, mostly clear with areas of frost late tonight,
  • Partly cloudy with areas of AM frost, mostly cloudy Wednesday afternoon, mostly cloudy with a slight (20%) chance of rain Wednesday night and Thursday AM,
  • Mostly cloudy with a slight (20%) chance of showers Thursday afternoon (Halloween), partly cloudy with a slight (20%) chance of evening showers, then just partly cloudy Thursday night.
  • highs 55-60 lows 36-42.
  • Sunny Friday, mostly cloudy with a (40%) chance of rain at night,
  • Then mostly cloudy and cooler with a good (50%) chance of rain Saturday through Sunday, and a (30%) chance of showers Sunday night and Monday.
  • highs 62-50 warming to 53 Monday lows 46-40. (seasonal averages high 60 low 43)

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

  • Mostly clear with areas of frost and patchy fog this AM,
  • Sunny this afternoon, mostly clear tonight with patchy areas of frost and patchy frost late tonight,
  • Partly cloudy with patchy AM coastal fog while areas of frost and patchy fog Wednesday AM, mostly cloudy in the afternoon, mostly cloudy with a slight (20%) chance of rain Wednesday night,
  • Mostly cloudy with a slight (20%) chance of AM rain Thursday (Halloween), a (30%) chance of showers in the afternoon, then partly cloudy with a slight (20%) chance of showers at night.
  • highs 55-58 lows 36-45.
  • Partly cloudy Friday, mostly cloudy with a (30%) chance of rain at night,
  • Then mostly cloudy with a good (50%) chance of rain Saturday through Sunday night and a (30%) chance of rain Monday.
  • highs 57-52 warming to 55 Monday lows 48-42. (seasonal averages high 59 low 45)

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Forecast for the Cascades of Lane County:

  • Sunny today, clear tonight,
  • Partly cloudy Wednesday, mostly cloudy with a slight (20%) chance of rain Wednesday night,
  • Cloudy with a good (50%) chance of rain Thursday (Halloween), then mostly cloudy with a slight (20%) chance of rain Thursday night.
  • free air freezing level 6,500 ft. rising to 8,000 ft. this afternoon, 9,000 ft. tonight and Wednesday, snow level 8,000 ft. Wednesday night through Thursday night.
  • highs 46-50 cooling to 47 Thursday lows 25-32.
  • Partly cloudy Friday, mostly cloudy with a good (50%) chance of rain at night,
  • Mostly cloudy with rain likely (70%) Saturday, rain and snow showers likely (70%) at night,
  • Rain and snow showers likely (60%) Sunday, then mostly cloudy with a good (50%) chance of showers Sunday night and Monday.
  • free air freezing level 12,000 ft. Friday, snow level above 8,000 ft. Friday night, 6,000 ft. Saturday, 4,000 ft. at night, then 3,500 ft. Sunday through Monday.
  • highs 54-34 warming to 37 Monday lows 33-24.

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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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