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 Low Pressure Trough (Shaded “U” shape with arrows) moves over Oregon and then an Upper Level High Pressure Ridge (Shaded “Arch” shape with arrows) displaces the low pressure bringing sunshine and dry weather Tuesday through Friday. The graphics for days 3-7 show a frontal system pushing into the Pacific Northwest Saturday and overnight into Sunday AM.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 39 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 40 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:
- Mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a slight (20%) chance of AM showers, a bit warmer with possible sun peeks Tuesday afternoon, partly cloudy at night,
- AM clouds with patchy fog, sunny and a bit warmer Wednesday afternoon, clear Wednesday night,
- Mostly sunny Thursday, then partly cloudy Thursday night.
- lows 42-40 warming to 45 Wednesday night and Thursday night highs 59-70.
- A mix of clouds and sun and a bit cooler Friday, mostly cloudy at night,
- Mostly cloudy with a slight (20%) chance of showers Saturday and Saturday night,
- A mix of clouds and sun with a slight (20%) chance of showers Sunday, partly at night,
- Then a mix of clouds and sun with a (40%) chance showers Sunday.
- highs near 68 lows near 47. (seasonal averages high 64 low 41)
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Eugene-Springfield Pollen Count
Grass………. Low (2)
Trees………. High (98)
Last Counted: 4/28/18
Data Courtesy of Oregon Allergy Associates
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Forecast for Roseburg:
- Mostly cloudy with a slight (20%) chance of showers tonight,
- Mostly cloudy and a bit warmer Tuesday, partly cloudy in the evening, mostly clear late Tuesday night,
- Sunny and a bit warmer Wednesday and Thursday, clear Wednesday night, partly cloudy Thursday night,.
- lows 43-49 highs 63-78.
- Mostly cloudy and a bit cooler Friday and Friday night,
- Mostly cloudy with a slight (20%) chance of AM showers, a bit cooler with a slight (20%) chance of thunderstorms Saturday afternoon, a slight (20%) chance of showers Saturday night,
- Mostly cloudy and a bit warmer with a (30%) chance of showers and a slight (20%) chance of thunderstorms Sunday and at night,
- Then mostly cloudy and a bit warmer with a slight (20%) chance of showers Monday.
- highs 74-70 warming to 77 Monday lows 48-50. (seasonal averages high 66 low 44)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy tonight with a slight (20%) chance of showers late tonight and Tuesday AM, mostly cloudy and a bit warmer in the afternoon, just partly cloudy late Tuesday night,
- Mostly sunny and warmer Wednesday, clear at night,
- Mostly sunny and a bit cooler Thursday, partly cloudy Thursday night,
- lows 43-48 highs 56-62 cooling to 58 Thursday.
- Mostly cloudy Friday and Friday night,
- Mostly cloudy and a bit warmer with a slight (20%) chance of showers Saturday through Sunday AM, a (30%) chance of showers and a slight (20%) chance of thunderstorms and a bit warmer in the afternoon, then a slight (20%) chance of showers Sunday night and Monday.
- highs 58-62 lows near 48. (seasonal averages high 57 low 45)
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Forecast for the Cascades in Lane County:
- Mostly cloudy with a slight (20%) chance of evening rain and snow showers, partly cloudy late tonight,
- A slight (20%) chance of AM rain and snow showers, a mix of clouds and sun and a bit warmer Tuesday afternoon, just mostly clear at night,
- Sunny and warmer Wednesday, clear Wednesday night,
- Mostly sunny and a bit warmer Thursday, partly cloudy at night.
- snow level 4,000 ft. tonight and Tuesday AM, free air freezing level 7,000 ft. falling to 6,500 ft. late Tuesday night, 7,000 ft. rising to 8,000 ft. Wednesday, 10,000 ft. falling to 9,000 ft. late Wednesday night, 8,000 ft. rising to 9,000 ft. Thursday, then 12,000 ft. Thursday night.
- lows 29-38 highs 47-63.
- A mix of clouds and sun and a bit cooler Friday, mostly cloudy Friday night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Saturday, a (30%) chance of showers at night,
- A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Sunday, mostly cloudy with a good (50%) chance of showers Sunday night,
- Then a mix of clouds and sun and a bit warmer with a (30%) chance of showers Monday.
- free air freezing level 11,000 ft. Friday and Friday night, snow level 7,500 ft. Saturday, then above 8,000 ft. Saturday night through Monday.
- highs 60-55 warming to 57 Monday lows near 38.
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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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