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Tim Chuey Weather

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Check out my latest Eugene Daily News Weather Or Not Column I Wonder How The Dam Thing Works and my new Feature Story How Medical Science Changed My Life.

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We have a winner!

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Congratulations to Josh Foster for being the first person to post the correct answer my new weekly weather quiz question. Here is the question again. Please define “a warm occlusion” and no it has nothing to do with a dental overbite. Here is Josh’s correct answer: In a warm occlusion, the air mass overtaking the warm front is not as cool as the cold air ahead of the warm front, and rides over the colder air mass while lifting the warm air. There are both warm and cold occluded fronts. Josh wins a week of free personalized weather forecasts tailored to his needs. I’ll have a new weekly weather quiz question starting next 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.  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 disturbance (Small shaded area) is moving away from us and a frontal system fell apart as it pushed into the Pacific Northwest and another one is on the way to get here Monday. An upper level low (shaded area offshore in first graphic) will take control of our weather for early next week.

 

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The Grass Pollen Count is listed as Absent at 0 and Tree pollen is Low at 2 as of 8/27/13 according to Oregon Allergy Associates.

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

  • AM clouds and sun with patchy fog, sunny and cooler this afternoon, partly cloudy cloudy tonight.
  • Mostly cloudy Monday AM, partly cloudy and cooler with a slight (20%) chance of showers Monday (Labor Day) and Monday evening.
  • A mix of clouds and sun with a slight (20%) chance of showers Tuesday, partly cloudy with a slight (20%) chance of showers at night.
  • highs 82-76 warming to 79 Tuesday lows 56-52  and warming to 55 Tuesday night.
  • Partly cloudy Wednesday and in the evening, mostly cloudy late at night,
  • A mix of clouds and sun Thursday, then partly cloudy Thursday night through Saturday AM, then sunny Saturday afternoon.
  • highs 78-75 warming to 80 Saturday lows near 55. (seasonal averages high 81 low 50)

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Forecast for the Umpqua Basin including Roseburg:

  • Mostly cloudy this AM, sunny this afternoon, mostly clear in the evening, partly cloudy with a slight (20%) chance of showers late tonight.
  • Partly cloudy with a slight (20%) chance of showers Monday (Labor Day) and Monday evening, mostly cloudy with a slight (20%) chance of showers at night.
  • Partly cloudy with a slight (20%) chance of showers Tuesday, a (30%) chance of showers in the evening, then partly cloudy late Tuesday night.
  • highs 84-82 lows near 58.
  • Partly cloudy Wednesday and in the evening, mostly cloudy with a slight (20%) chance of showers late Wednesday night.
  • Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy with a slight (20%) chance of showers Thursday afternoon,  partly cloudy Thursday night.
  • Mostly sunny Friday and Saturday with mostly clear skies Friday night.
  • highs near 82-85 lows near 58-56. (seasonal averages high 83 low 54)

 

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

  • Mostly cloudy with patchy fog this AM, sunny this afternoon, partly cloudy in the evening, mostly cloudy with a good (50%) chance of coastal showers tonight while partly cloudy in the evening inland and mostly cloudy with a (30%) chance of showers late at night.
  • Mostly cloudy with a slight (20%) chance of showers Monday (Labor Day), a (30%) chance of coastal showers while a slight (20%) chance of showers inland Monday night.
  • Mostly cloudy with a (30%) chance of AM showers, partly cloudy with a (40%) chance of showers Tuesday, then partly cloudy with a slight (20%) chance of showers Tuesday night.
  • highs 67-70 lows 55-60 cooling to 55 Monday night and Tuesday night.
  • Partly cloudy with a slight (20%) chance of showers Wednesday and Wednesday night. Mostly cloudy with a slight (20%) chance of showers Thursday AM, partly cloudy with a slight (20%) chance of showers in the afternoon, just partly cloudy Thursday night and Friday, mostly clear Friday night.
  • Mostly sunny Saturday.
  • highs near 69 lows near 55. (seasonal averages high 66 low 52)

 

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Forecast for the Cascades of Lane County:

  • AM clouds, mostly sunny this afternoon,  partly cloudy in the evening, mostly cloudy late tonight.
  • A mix of clouds and sun with a slight (20%) chance of showers Monday (Labor Day), partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers Monday night. A mix of clouds and sun with a slight (20%) chance of showers Tuesday, then partly cloudy with a slight (20%) chance of showers in the evening and just partly cloudy late Tuesday night.
  • free air freezing level 14,000 ft. today and tonight, snow level above 8,000 ft. Monday through Tuesday evening, then free air freezing level 12,000 ft. late Tuesday night.
  • highs 74-66 lows 49-45 warming to 47 Tuesday night.
  • Partly cloudy with a slight (20%) chance of afternoon showers Wednesday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late Wednesday night.
  • A mix of clouds and sun with a slight (20%) chance of showers Thursday, mostly cloudy with a slight (20%) chance of showers in the evening, partly cloudy with a slight (20%) chance of showers late Thursday night. Partly cloudy with a slight (20%) chance of showers Friday AM, mostly sunny in the afternoon, mostly clear at night.
  • Mostly sunny Saturday.
  • free air freezing level 12,000 ft. Friday AM. snow level above 8,000 ft. Wednesday through Friday AM, free air freezing level 14,000 ft. Friday afternoon, then 15,000 ft. Friday night and Saturday.
  • highs 68-65 warming to 70 Saturday lows 47-44 warming to 48 Friday 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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