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) displaces the low pressure bringing sunshine and dry weather through Friday. The graphics for days 3-7 show a weak frontal system pushing into the Pacific Northwest Sunday, then another frontal system slides through between Tuesday night and Wednesday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 30 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 10 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 34 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:
- Clear tonight,
- Mostly sunny and a bit warmer Thursday, partly cloudy at night and Friday (a bit cooler), mostly cloudy Friday night,
- A mix of clouds and sun and a bit warmer Saturday, then mostly cloudy with a slight (20%) chance of showers at night.
- lows 45-49 highs 72-68 warming back to 72 Saturday.
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Sunday, mostly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Sunday night,
- Partly cloudy and a bit warmer Monday and at night,
- Partly cloudy and a bit cooler Tuesday with a (40%) chance of evening showers, mostly cloudy with a (40%) chance of showers Tuesday night,
- Then a mix of clouds and sun and a bit cooler with a (40%) chance of showers Wednesday.
- highs 69-72 cooling to 66 Wednesday lows near 48. (seasonal averages high 64 low 42)
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Eugene-Springfield Pollen Count
Grass………. Low (3)
Trees………. High (132)
Last Counted: 5/2/18
Data Courtesy of Oregon Allergy Associates
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Forecast for Roseburg:
- Clear tonight,
- Sunny and a bit warmer Thursday, partly cloudy at night and Friday, mostly cloudy Friday night,
- Just mostly cloudy a bit warmer Saturday, a slight (20%) chance of evening thunderstorms, a slight (20%) chance of showers late at night.
- lows 48-50 highs 78-76.
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday, partly cloudy Sunday night,
- Mostly sunny and a bit warmer Monday, mostly clear at night,
- Partly cloudy with a slight (20%) chance of showers and a bit cooler Tuesday, then mostly cloudy with a (30%) chance of showers Tuesday night and Wednesday (a bit cooler).
- highs 75-73 warming to 70 Tuesday lows 48-50. (seasonal averages high 67 low 45)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear this evening, partly cloudy with patchy coastal fog late tonight and Thursday AM and mostly cloudy a bit cooler in the afternoon while mostly cloudy inland in the AM and becoming sunny and a bit cooler inland in the afternoon, mostly cloudy Thursday night,
- Mostly cloudy Friday AM, partly cloudy and a bit warmer Friday afternoon, then mostly cloudy and a bit warmer Friday night through Saturday night.
- lows 47-52 highs 56-66.
- Mostly cloudy and a bit cooler Sunday, partly cloudy Sunday night,
- Mostly sunny and a bit warmer Monday, mostly clear at night,
- Partly cloudy with a slight (20%) chance of showers Tuesday, mostly cloudy with a (30%) chance of showers Tuesday night,
- Then mostly cloudy with a good (50%) chance of showers Wednesday.
- highs 60-62 lows 48-50. (seasonal averages high 57 low 45)
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Forecast for the Cascades in Lane County:
- Clear tonight,
- Sunny and a bit warmer Thursday, partly cloudy at night,
- Mostly sunny and a bit cooler Friday, becoming mostly cloudy in the evening, partly cloudy late Friday night,
- A mix of clouds and sun and a bit warmer Saturday with a slight (20%) chance of afternoon showers and thunderstorms, a slight (20%) chance of showers at night.
- free air freezing level 9,000 ft. tonight and Thursday, 10,000 ft. Thursday night, 9,000 ft. Friday and Friday night, snow level 7,500 ft. Saturday, then above 8,000 ft. Saturday night.
- lows 39-42 cooling back to 39 Saturday night highs near 62.
- A slight (20%) 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 with a slight (20%) chance of showers late Sunday night,
- Partly cloudy with a slight (20%) chance of AM showers, just partly cloudy and a bit warmer Monday afternoon and at night,
- AM sun, a mix of clouds and sun and a bit warmer with a (40%) chance of showers Tuesday afternoon, partly cloudy with a (40%) chance of evening showers, cloudy with a (40%) chance of showers Tuesday night,
- Then a mix of clouds and sun and a bit cooler with a (40%) chance of showers Wednesday.
- snow level above 8,000 ft. Sunday through Monday AM, free air freezing level 11,000 ft. Monday afternoon, 11,000 ft. rising to 12,000 ft. late Monday night, 12,000 ft. Tuesday AM, then snow level above 8,000 ft. Tuesday afternoon through Wednesday.
- highs 56-64 cooling to 52 Wednesday lows 38-40.
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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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