Check out my latest Eugene Daily News Weather Or Not column:
http://eugenedailynews.com/2018/05/finding-a-way-to-make-sure-we-dont-run-out/
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Here is my new weekly weather quiz question. What is a “Dry Thunderstorm?” 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) is weakening its hold on us. We are seeing an increase in marine airflow which cools us down. The graphics for days 1-3 show surface low pressure moving eastward bringing cooler moist marine air with it. The graphics for days 3-7 show a frontal system well offshore and approaching the Pacific Northwest Saturday to move in by next Sunday. There is even another frontal system located well offshore in the Gulf of Alaska on Monday heading our way next week.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 35 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 31 in the Good category measuring Ozone.
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,
- AM clouds, a mix of clouds and sun and a bit cooler Tuesday afternoon, mostly cloudy with a (40%) chance of evening showers, a slight (20%) chance of showers late at night (under 0.10 in. of rain possible),
- Cloudy with a slight (20%) chance of AM showers, a (30%) chance of showers and a bit cooler Wednesday afternoon, a slight (20%) chance of evening showers, just mostly cloudy late Wednesday night,
- Mostly cloudy and a bit warmer Thursday, then partly cloudy at night.
- lows 49-46 highs 70-64 warming to 68 Thursday.
- Partly cloudy and a bit warmer Friday and Friday night,
- Partly cloudy and a bit warmer Saturday and in the evening, mostly cloudy late Saturday night,
- A mix of clouds and sun and slightly cooler with a slight (20%) chance of showers Sunday, mostly cloudy with a slight (20%) chance of showers at night,
- Then a mix of clouds and sun Monday with a slight (20%) chance of AM showers.
- highs 72-69 lows near 48. (seasonal averages high 67 low 43)
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Eugene-Springfield Pollen Count
Grass………. Moderate (11)
Trees………. Moderate (45)
Last Counted: 5/11/18
Data Courtesy of Oregon Allergy Associates
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Forecast for Roseburg:
- Partly cloudy with a slight (20%) chance of evening thunderstorms, mostly cloudy late tonight,
- Mostly cloudy Tuesday with a slight (20%) of thunderstorms and a bit cooler in the afternoon and evening, a (30%) chance of showers late at night (under 0.10 in. of rain possible),
- Cloudy and a bit cooler with a (30%) chance of showers Wednesday (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of showers Wednesday night (under 0.10 in. of rain possible) and Thursday (a bit warmer), just partly cloudy Thursday night,
- lows 52-54 highs 74-65 warming to 72 Thursday.
- Partly cloudy and a bit warmer Friday through Saturday, mostly cloudy with a slight (20%) chance of showers Saturday night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday through Monday.
- highs 77-72 lows 49-52. (seasonal averages high 70 low 47)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy tonight,
- Cloudy with patchy AM fog, a bit cooler with a slight (20%) chance of inland afternoon thunderstorms, mostly cloudy with a slight (20%) chance of showers late Tuesday night (under 0.10 in. of rain possible),
- Cloudy with a (30%) chance of showers Wednesday (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance evening coastal showers while a slight (20%) chance of inland showers at night,
- Mostly cloudy Thursday AM, partly cloudy in the afternoon, then partly cloudy Thursday night,
- lows 52-49 highs near 60.
- Partly cloudy and slightly cooler Saturday, mostly cloudy with a slight (20%) chance of showers Saturday night through Sunday night,
- Then mostly cloudy Monday.
- highs near 60 lows 47-50. (seasonal averages high 59 low 47)
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Forecast for the Cascades in Lane County:
- Partly cloudy tonight,
- Partly cloudy and a bit cooler with a good (50%) chance of showers and thunderstorms Tuesday afternoon (0.25 in. of rain possible, more in storms), evening showers likely (70%) with a slight (20%) chance of thunderstorms, showers likely (70%) late at night (0.50 in. of rain possible, more in storms),
- Cloudy with a good (50%) chance of showers and a bit cooler Wednesday and a slight (20%) chance of afternoon thunderstorms, a (40%) chance of evening showers, a slight (20%) chance of showers late Wednesday night,
- Mostly cloudy with a slight (20%) chance of showers Thursday, then just partly cloudy at night.
- free air freezing level 12,000 ft. tonight, snow level above 8,000 ft Tuesday through Wednesday night, 8,000 ft. Thursday, then free air freezing level 11,000 ft. Thursday night.
- lows 43-39 highs 66-53 warming to 56 Thursday.
- A mix of clouds and sun Friday with a slight (20%) chance of AM showers, a bit warmer with a (30%) chance of showers in the afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Friday night,
- A mix of clouds and sun with a (40%) chance of showers Saturday, partly cloudy with a (40%) chance of evening showers, mostly cloudy with a (40%) chance of showers late at night,
- A mix of clouds and sun Sunday and slightly cooler with a good (50%) chance of showers, mostly cloudy with a (30%) chance of showers Sunday night,
- Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Monday.
- snow level above 8,000 ft. Friday through Monday.
- highs 60-57 lows 40-42.
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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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