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 19 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 14 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 19 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:
- A mix of clouds and sun and a bit cooler this afternoon, mostly cloudy with a slight (20%) chance of showers tonight (under 0.10 in. of rain possible),
- Cloudy with a slight (20%) chance of AM showers and patchy drizzle, a (40%) chance of showers and a bit cooler Wednesday afternoon, a slight (20%) chance of showers Wednesday night with patchy drizzle late,
- Patchy AM drizzle with a slight (20%) chance of showers, just mostly cloudy and a bit warmer Thursday afternoon, then partly cloudy at night.
- highs 70-64 warming back to 70 Thursday lows 52-46.
- 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 warming back to 72 Monday lows near 48. (seasonal averages high 67 low 43)
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Eugene-Springfield Pollen Count
Grass………. Moderate (9)
Trees………. Moderate (67)
Last Counted: 5/15/18
Data Courtesy of Oregon Allergy Associates
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Forecast for Roseburg:
- Mostly cloudy with a slight (20%) of thunderstorms and a bit cooler this afternoon and evening, cloudy with a (30%) chance of showers late tonight (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 AM, partly cloudy and a bit warmer in the afternoon, partly cloudy Thursday night,
- highs 73-65 warming back to 73 Thursday lows 53-49.
- 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:
- Cloudy and a bit cooler with a slight (20%) chance of inland thunderstorms this afternoon, a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
- Cloudy with a (30%) chance of showers and a bit cooler 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 and a bit warmer in the afternoon and Thursday night,
- highs 60-58 warming to 62 Thursday lows 52-49.
- Partly cloudy and slightly cooler Friday through Saturday, mostly cloudy with a slight (20%) chance of showers Saturday night through Sunday night,
- Then mostly cloudy Monday.
- highs 62-60 warming back to 62 Monday lows 47-50. (seasonal averages high 59 low 47)
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Forecast for the Cascades in Lane County:
- Partly cloudy and a bit cooler with a (40%) chance of showers and a slight (20%) chance of thunderstorms this afternoon (0.10 in. of rain possible, more in storms), cloudy with evening showers likely (70%) and a slight (20%) chance of thunderstorms, showers late tonight (0.50 in. of rain possible, more in storms),
- Cloudy with areas of AM drizzle, a good (50%) chance of showers and a bit cooler Wednesday afternoon, a (40%) chance of evening showers, a slight (20%) chance of showers and drizzle late Wednesday night,
- Mostly cloudy with a (30%) chance of AM showers with areas of drizzle, a slight (20%) chance of showers Thursday afternoon, then just partly cloudy at night.
- snow level above 8,000 ft. this afternoon through Wednesday night, 8,000 ft. Thursday, then free air freezing level 11,000 ft. Thursday night.
- highs 65-52 warming to 57 Thursday lows 42-39.
- A mix of clouds and sun and a bit warmer Friday with a slight (20%) chance of showers, 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 7,500 ft. Friday, 8,000 ft. Friday night, above 8,000 ft. Saturday 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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