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Tim Chuey Weather

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

http://eugenedailynews.com/2018/04/heres-a-new-one-have-you-ever-heard-of-a-dirty-thunderstorm/

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Here is my weekly weather quiz question. What is a “Downburst?”  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 High Pressure Ridge (Shaded “Arch” shape with arrows) weakens enough to allow onshore flow which will bring us more clouds. Slight chance of showers returns Saturday night. The graphics for days 3-7 show a frontal system sliding in between Tuesday night and Wednesday, then another frontal system is offshore next Friday.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 31 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 29 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

  • 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:

  • Partly cloudy this evening, mostly cloudy late tonight,
  • A mix of clouds and sun and warmer Saturday, mostly cloudy with a slight (20%) chance of showers late Saturday night (under 0.10 in. of rain possible) and Sunday (a bit cooler), just mostly cloudy in the evening,  partly cloudy late Sunday night,
  • Partly cloudy Monday AM, mostly sunny and a bit warmer in the afternoon, then mostly clear at night.
  • lows 48-52 cooling back to 48 Sunday night and Monday night highs 72-68 warming to 74 Monday.
  • AM sun, becoming mostly cloudy and a bit warmer Tuesday with showers likely (70%) in the afternoon and evening, then a (30%) chance of showers late Tuesday night,
  • Mostly cloudy and cooler with a good (50%) chance of showers Wednesday and Wednesday at night,
  • Mostly cloudy with a (40%) chance of AM showers, a bit cooler with a slight (20%) chance of showers Thursday afternoon and at night,
  • Then a mix of clouds and sun Friday with a slight (20%) chance of AM showers.
  • highs 76-63 lows 52-47. (seasonal averages high 64 low 42)

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Eugene-Springfield Pollen Count

Grass………. Moderate (8)
Trees………. High (239)
Last Counted: 5/3/18
Data Courtesy of Oregon Allergy Associates

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Forecast for Roseburg:

  • Mostly cloudy tonight,
  • Mostly cloudy a bit warmer Saturday, a slight (20%) chance of evening thunderstorms, a (30%) chance of showers and a (30%) chance of thunderstorms late at night (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit cooler with a (40%) chance of thunderstorms Sunday, just partly cloudy Sunday night,
  • AM clouds, mostly sunny and a bit warmer Monday, mostly clear at night,
  • lows 52-54 cooling back to 49 Monday warming back to 52 Monday night highs 78-73 warming back to 78 Monday.
  • Partly cloudy with a (30%) chance of showers and a bit warmer with a slight (20%) chance of thunderstorms Tuesday afternoon, mostly cloudy with showers and a slight (20%) chance of thunderstorms in the afternoon, a good (50%) chance of showers late Tuesday night,
  • Mostly cloudy and a bit cooler with a (30%) chance of showers Wednesday, a bit cooler with a slight (20%) chance of showers Wednesday night through Thursday night,
  • Then mostly cloudy and a bit warmer Friday.
  • highs 82-69 warming to 72 Friday lows 52-48. (seasonal averages high 68 low 45)

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

  • Mostly cloudy tonight,
  • Mostly cloudy and a bit warmer Saturday, a slight (20%) chance of coastal thunderstorms late at night while isolated inland evening thunderstorms and a slight (20%) chance of inland thunderstorms late Saturday night,
  • A (30%) chance of AM thunderstorms, mostly cloudy and a bit cooler Sunday afternoon, partly cloudy at night,
  • AM clouds, mostly sunny and a bit warmer Monday, mostly clear at night.
  • lows near 50 highs 63-59 warming back to 63 Monday.
  • Partly cloudy Tuesday with a slight (20%) chance of afternoon showers, mostly cloudy with evening showers likely (70%), a good (50%) chance of showers late Tuesday night,
  • Mostly cloudy with a slight (20%) chance of showers and a bit cooler Wednesday, a slight (20%) chance of showers at night and Thursday AM, just mostly cloudy in the afternoon, a slight (20%) chance of showers Thursday night,
  • Then mostly cloudy Friday.
  • highs 62-58 lows 52-49. (seasonal averages high 58 low 45)

 

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Forecast for the Cascades in Lane County:

  • Partly cloudy this evening, mostly cloudy late tonight,
  • Mostly cloudy and a bit warmer Saturday with a slight (20%) chance of afternoon showers, a slight (20%) chance of evening showers and thunderstorms, a good (50%) chance of showers late at night,
  • A good (50%) chance of AM showers, mostly cloudy and a bit cooler with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Sunday afternoon and evening, becoming partly cloudy late Sunday night and Monday AM, mostly sunny and a bit warmer Monday afternoon, then partly cloudy Sunday night.
  • free air freezing level 11,000 ft. tonight, snow level above 8,000 ft. Saturday afternoon through Sunday night, free air freezing level 10,000 ft. Monday a, then 13,000 ft. Monday night.
  • lows 42-38 warming back to 42 Monday night highs 64-57 warming back to 64 Monday.
  • AM sun, mostly cloudy and a bit warmer with showers likely (70%) and a slight (20%) chance of thunderstorms Tuesday afternoon and evening, mostly cloudy with a (30%) chance of showers late Tuesday night,
  • Mostly cloudy and a bit cooler with a (40%) chance of showers Wednesday, a good (50%) chance of showers at night,
  • Mostly cloudy with a (40%) chance of AM showers, a bit cooler with a slight (20%) chance of showers Thursday afternoon and at night,
  • A slight (20%) chance of AM showers, then a mix of clouds and sun Friday.
  • snow level above 8,000 ft. Tuesday and Tuesday night, above 8,000 ft. falling to 7,500 ft. Wednesday, 7,500 ft. falling to 6,000 ft. late Wednesday night, 6,000 ft. Thursday, then 6,500 ft. Thursday night and Friday.
  • highs 69-50 lows 42-36.

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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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