Check out my latest Eugene Daily News Weather Or Not column:
Finding A Way To Make Sure We Don’t Run Out
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Here is my weekly weather quiz question for the last time. What is a “Dry Thunderstorm?” Here is the correct answer. A Dry Thunderstorm: Generally a high-based thunderstorm when lightning is observed, but little if any precipitation reaches the ground. Most of the rain produced by the thunderstorm evaporates into relatively dry air beneath the storm cell. May also be referred to as “dry lightning.” I’ll have a new weekly weather quiz question for you starting Monday. 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) is controlling our unsettled weather. The graphics for days 3-7 show the next storm systems that will approach and try to move through the Pacific Northwest Tuesday through next Saturday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 20 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 14 in the Good category measuring Ozone.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Advisories:
- A FLOOD WARNING IS IN EFFECT FOR THE LOWER COLUMBIA RIVER AT VANCOUVER IN MULTNOMAH COUNTY OREGON AND CLARK COUNTY WASHINGTON.
- 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 this AM, a mix of clouds and sun with a slight (20%) chance of showers this afternoon, mostly cloudy with a slight (20%) chance of showers this evening, just mostly cloudy late tonight,
- A bit cooler with a slight (20%) chance of showers Sunday, mostly cloudy at night,
- Then partly cloudy and a bit warmer Monday afternoon and Monday night.
- highs 68-65 warming to 72 Monday lows near 47.
- Partly cloudy and a bit warmer Tuesday and Tuesday night,
- Partly cloudy with a slight (20%) chance of showers Wednesday afternoon and at night,
- Partly cloudy with a slight (20%) chance of showers and a bit cooler Thursday and in the evening, then just partly cloudy and a bit cooler Thursday night and Friday.
- highs 77-72 lows 52-50. (seasonal averages high 68 low 44)
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Eugene-Springfield Pollen Count
Grass………. High (35)
Trees………. Moderate (23)
Last Counted: 5/18/18
Data Courtesy of Oregon Allergy Associates
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Forecast for Roseburg:
- AM clouds, partly cloudy and a bit warmer this afternoon and evening, mostly cloudy with a slight (20%) chance of showers late tonight,
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday afternoon and evening, just mostly cloudy late Sunday night,
- AM clouds, partly cloudy and a bit warmer Monday afternoon and at night.
- highs 76-70 warming back to 76 Monday lows near 50.
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday and Tuesday night,
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Wednesday and Wednesday night,
- Partly cloudy with and a bit cooler a slight (20%) chance of thunderstorms Thursday and at night,
- Partly cloudy with a slight (20%) chance of AM showers, then just partly cloudy and a bit cooler Friday afternoon.
- highs 85-80 lows 56-53. (seasonal averages high 71 low 48)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy and a bit warmer today through Sunday, partly cloudy Sunday night,
- AM clouds, partly cloudy and a bit warmer Monday afternoon and at night.
- highs near 63 lows near 49.
- Partly cloudy and a bit warmer Tuesday and Tuesday night,
- Partly cloudy with a slight (20%) chance of showers and a bit cooler Wednesday afternoon and at night,
- Partly cloudy with a slight (20%) chance of showers and a bit warmer Thursday night,
- Then partly cloudy with a slight (20%) chance of showers Friday AM, just partly cloudy and a bit cooler in the afternoon.
- highs 64-62 warming back to 64 Thursday cooling back to 62 Friday lows near 52. (seasonal averages high 59 low 48)
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Forecast for the Cascades in Lane County:
- A mix of clouds and sun with a good (50%) chance of showers and a slight (20%) chance of thunderstorms this afternoon and evening (under 0.10 in. of rain possible, more in storms), a (40%) chance of showers late tonight (under 0.10 in. of rain possible, more in storms),
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Sunday, a (40%) chance of evening showers, just mostly cloudy late at night,
- A mix of clouds and sun and a bit warmer Monday, partly cloudy Monday night.
- snow level 7,500 ft. today, above 8,000 ft. tonight, 8,000 ft. Sunday, above 8,000 ft. Sunday night, then free air freezing level 12,000 ft. Monday afternoon and Monday night.
- highs 60-53 warming back to 60 Monday lows 42-40 warming back to 42 Monday night.
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday afternoon and evening, a (40%) chance of showers late Tuesday night,
- A mix of clouds and sun with a good (50%) chance of showers and a bit cooler Wednesday, mostly cloudy with a good (50%) chance of evening showers, partly cloudy with a good (50%) chance of showers late Wednesday night,
- A mix of clouds and sun and slightly cooler with a (40%) chance of showers Thursday AM, a slight (20%) chance of showers and a bit cooler in the afternoon, partly cloudy with a slight (20%) chance of evening showers, then just partly cloudy and a bit cooler Thursday night and Friday.
- free air freezing level 12,000 ft. Tuesday AM, snow level above 8,000 ft. Tuesday afternoon through Thursday evening, free air freezing level 13,000 ft. late Thursday night, then 13,000 ft. rising to 14,000 ft. Friday.
- highs 58-64 lows 40-43.
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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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