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 through the Pacific Northwest Sunday, then another frontal system slides in between Tuesday and Wednesday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 32 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 30 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 27 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:
- Patchy AM fog, mostly sunny and a bit warmer today, partly cloudy tonight 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.
- highs 72-68 warming back to 72 Saturday lows 45-49.
- 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 afternoon showers, partly cloudy with a (40%) chance of evening showers, mostly cloudy with a (40%) chance of showers late 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:
- Sunny and a bit warmer today, partly cloudy tonight 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.
- highs 76-79 lows 50-53.
- 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 76-80 Tuesday lows 50-52. (seasonal averages high 67 low 45)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy with patchy coastal fog this AM and mostly cloudy a bit cooler this afternoon while mostly cloudy inland this AM and becoming sunny and a bit cooler inland this afternoon, mostly cloudy tonight,
- Mostly cloudy Friday AM, partly cloudy and a bit warmer Friday afternoon, then mostly cloudy and a bit warmer Friday night through Saturday night.
- highs 56-66 lows 49-52.
- 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 58 low 45)
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Forecast for the Cascades in Lane County:
- Sunny and a bit warmer today, partly cloudy tonight,
- 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. today, 10,000 ft. tonight, 9,000 ft. Friday and Friday night, snow level 7,500 ft. Saturday, then above 8,000 ft. Saturday night.
- highs near 62 lows 40-42 cooling back to 39 Saturday night.
- 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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