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Tim Chuey Weather

Check out my latest Eugene Daily News Weather Or Not column:

http://eugenedailynews.com/2018/04/it-was-their-month-in-history-but-why-didnt-we-know-about-them/

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Here is my weekly weather quiz question. What is  “Differential Motion?” The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs. Good luck.

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An Upper Level Low Pressure Trough (Shaded “U” shape with arrows) is still sending us storms.  The graphics for days 1-3 show a warm front just offshore that will move through Friday. The graphics for days 3-7 show the frontal systems that will move through the Pacific Northwest Saturday night and Sunday. Then a frontal system moves inland from the Oregon and California coasts next Wednesday and Thursday.

 

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 6 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 4 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 5 PM FRIDAY ABOVE 4,500 FT.  FOR THE NORTHERN OREGON CASCADES.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 7 PM TONIGHT ABOVE 5,000 FT. FOR THE CASCADES IN LANE COUNTY.
  • A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER BAR. POOLS IN THE BEDROCK ALONG THE RIVERS EDGE ARE KNOWN TO DEVELOP BLUE-GREEN ALGAE (CYANOBACTERIAL) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED ALONG SEVERAL ACCESS AREAS ALONG THE  RIVER.

 

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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 (70%) and a slight (20%) chance of thunderstorms, a good (50%) chance of rain late tonight (0.10 in. of rain possible, more in storms),
  • Cloudy with AM rain, mostly cloudy a bit warmer with a good (50%) chance of showers Friday afternoon (under 0.10 in. of rain possible), a slight (20%) chance of evening showers, just mostly cloudy late at night (under 0.10 in. of rain possible),
  • Cloudy and a bit warmer with a slight (20%) chance of rain Saturday (under 0.10 in. of rain possible), rain Saturday night (0.50 in. of rain possible) and Sunday AM, showers and a bit cooler Sunday afternoon, then showers likely (70%) Sunday night.
  • lows 42-45 cooling to 39 Sunday night highs 57-59 cooing to 50 Monday.
  • Mostly cloudy with showers likely (70%) and a bit cooler Monday and Monday night,
  • A mix of clouds and sun and a bit warmer with a good (50%) chance of showers Tuesday, a (40%) chance of showers     at night,
  • Mostly cloudy with a (30%) chance of showers and a bit warmer Wednesday and Wednesday night,
  • Then just partly cloudy and a bit warmer Thursday.
  • highs 52-58 lows near 38. (seasonal averages high 60 low 39)

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Eugene-Springfield Pollen Count

Grass………. Low (0)
Trees………. Very High (755)
Last Counted: 4/7/18
Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

  • Mostly cloudy with a good (50%) chance of showers tonight (under 0.10 in. of rain possible, snow level 3,000 ft.),
  • Cloudy with rain likely (70%) Friday AM (snow level 3,000 ft.), just cloudy and warmer  Friday afternoon (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy at night,
  • Mostly cloudy and a bit warmer with a slight (20%) chance of rain Saturday afternoon, a good (50%) chance of evening rain, rain likely (70%) late Saturday night,
  • AM rain, mostly cloudy and a bit cooler with showers Sunday afternoon, rain and snow showers likely (70%) at night.
  • lows 40-44 cooling to 38 Sunday night highs 60-63 cooling to 52 Sunday.
  • Mostly cloudy and a bit cooler with rain and snow showers Monday, rain and snow showers likely (60%) Monday night,
  • A (40%) chance of rain and snow showers and a bit warmer Tuesday and a bit warmer, a slight (20%) chance of showers at night and Wednesday, a (30%) chance of showers Wednesday night,
  • Then just partly cloudy Thursday.
  • highs 52-63 lows 38-42. (seasonal averages high 62 low 42)

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Forecast for The South Oregon Coast Including Coos Bay and North Bend:

  • Mostly cloudy with a good (50%) chance of evening coastal showers and a good (50%) chance of rain late tonight while a good (50%) chance of inland showers tonight (under 0.10 in. of rain possible),
  • Cloudy with AM coastal rain likely (70%) and a bit warmer with a slight (20%) chance of coastal rain in the afternoon while a good (50%) chance of inland rain Friday (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of evening coastal showers, just mostly cloudy at night,
  • Mostly cloudy with a (30%) chance of rain and a bit warmer Saturday (under 0.10 in. of rain possible), coastal rain at night while inland evening rain likely (70%) with inland rain late Saturday night (0.50 in. of rain possible),
  • Mostly cloudy with AM rain, showers and a bit cooler Sunday afternoon, then showers likely (60%) Sunday night.
  • lows 43-46 cooling to 40 Sunday night highs 55-58 cooling to 51 Sunday.
  • Mostly cloudy with showers Monday, showers likely (70%) at night,
  • A (30%) chance of showers and a bit warmer Tuesday, a slight (20%) of showers and a bit warmer Tuesday night and Wednesday, a (30%) chance of showers at night,
  • Then just partly cloudy and a bit warmer Thursday.
  • highs 52-58 lows 40-42. (seasonal averages high 55 low 43)

 

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Forecast for the Cascades in Lane County:

  • Mostly cloudy with evening showers and a slight (20%)chance of thunderstorms and possible small hail, snow showers with a good (50%) chance of showers late tonight (0.25 in. of rain possible, 1-4 in. of snow possible),
  • Cloudy with AM rain and snow likely (70%), rain and snow showers likely (70%) and a bit warmer Friday afternoon (0.10 in. of rain possible, 1-3 in. of snow possible), mostly cloudy with a slight (20%) chance of evening rain and snow showers, just mostly cloudy late Friday night,
  • Mostly cloudy and a bit warmer Saturday, cloudy with a good (50%) chance of evening rain and snow, rain and snow  likely (70%) late at night (2 in. of snow possible),
  • AM rain and snow, rain and snow showers and a bit cooler Sunday afternoon (1-4 in. go snow possible), rain and snow showers and a bit cooler Sunday night.
  • snow level 3,500 ft. tonight, 3,500 ft. rising to 5,000 ft. Friday afternoon, 5,500 ft. Friday night, 5,500 ft. to 6,500 ft. Saturday afternoon, 5,500 ft. Saturday night, 4,500 ft. Sunday, then 3,500 ft. Sunday night.
  • lows 25-32 cooling to 24 Sunday night highs 32-46 cooling to 39 Sunday.
  • Snow showers likely (70%) and a bit cooler Monday, rain and snow showers likely (70%) at night,
  • A mix of clouds and sun and a bit warmer with a good (50%) chance of snow showers Tuesday, a good (50%) chance of rain and snow showers Tuesday night,
  • Mostly cloudy with a (40%) chance of rain and snow showers and a bit warmer Wednesday, a (40%) chance of rain and snow showers at night,
  • Then a mix of clouds and sun with a slight (20%) chance of rain and snow showers and a bit warmer Thursday.
  • snow level  2,500 ft. Monday, 3,000 ft. Monday night, 2,500 ft. Tuesday, 3,500 ft. Tuesday night and Wednesday, 4,500 ft. Wednesday night, the  3,500 ft. Thursday.
  • highs 33-44 lows 25-27 cooling back to 25 Wednesday 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 eugenedailynews.com.

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