Check out my latest Eugene Daily News Weather Or Not column:
http://eugenedailynews.com/2018/04/active-volcanoes-are-all-over-the-earth-but-even-in-space/
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Here is my weekly weather quiz question for the last time. What is “Doppler Radar?” Here is the correct answer. Doppler Radar is radar that can measure radial velocity, the instantaneous component of motion parallel to the radar beam (i.e., toward or away from the radar antenna). I’ll have a new weekly weather quiz 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) 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 no major frontal systems in the Pacific Northwest through next Sunday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 8 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 5 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 5 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:
- Cloudy with a good (50%) chance of evening showers, a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a (40%) chance of showers and a bit cooler Monday (under 0.10 in. of rain possible), a slight (20%) chance of showers late Monday night (under 0.10 in. of rain possible),
- A mix of clouds and a bit warmer Tuesday, partly cloudy at night,
- Mostly sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
- lows 42-39 warming back to 42 Wednesday night highs 56-72.
- Partly cloudy and a bit warmer Thursday and Thursday night,
- A mix of clouds and sun and a bit cooler Friday, mostly cloudy with a slight (20%) chance of showers at night,
- A mix of clouds and sun with a slight (20%) chance of showers Saturday, partly cloudy with a slight (20%) chance of showers Saturday night,
- Then a mix of clouds and sun Sunday.
- highs 72-70 lows near 45. (seasonal averages high 64 low 41)
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Eugene-Springfield Pollen Count
Grass………. Moderate (8)
Trees………. Very High (742)
Last Counted: 4/27/18
Data Courtesy of Oregon Allergy Associates
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Forecast for Roseburg:
- Mostly cloudy with a (30%) chance of scattered evening showers, (30%) chance of isolated showers late tonight (under 0.10 in. of rain possible, snow level 3,500 ft. late tonight),
- A slight (20%) chance of showers and a bit warmer Monday (under 0.10 in. of rain possible, snow level 3,000 ft. rising to 3,500 ft. in the afternoon), a slight (20%) chance of evening showers, just mostly cloudy late Monday night and Tuesday (a bit warmer), mostly clear in the evening, partly cloudy late Tuesday night,
- Sunny and cooler Wednesday, then clear at night.
- lows near 43 highs 57-62.
- Partly cloudy Thursday through Friday, mostly cloudy at night,
- Mostly cloudy with a slight (20%) chance of showers and a bit cooler Saturday, then just mostly cloudy and a bit warmer Saturday night and Sunday.
- highs 74-76 cooling to 72 Friday warming to 75 Saturday lows 46-48. (seasonal averages high 66 low 44)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with a (30%) chance of isolated coastal showers while a (30%) chance of scattered inland evening showers with a (30%) chance of isolated inland showers late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a slight (20%) chance of showers and a bit warmer Monday (under 0.10 in. of rain possible), just mostly cloudy Monday night and Tuesday (a bit warmer), partly cloudy Tuesday night,
- Sunny and warmer Wednesday, then clear at night.
- lows near 43 highs 55-57.
- Partly cloudy and a bit cooler Thursday through Friday, mostly cloudy with a slight (20%) chance of showers Friday night and Saturday, partly cloudy at night,
- Then mostly cloudy Sunday.
- highs 68-62 warming to 70 Saturday lows 44-47. (seasonal averages high 57 low 45)
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Forecast for the Cascades in Lane County:
- Cloudy with rain and snow showers tonight (0.10 in. of rain possible, 2 in. of snow possible),
- A bit cooler with a good (50%) chance of rain and snow showers Monday (under 0.10 in. of rain possible, 1 in. of snow possible), mostly cloudy with a slight (20%) chance of evening rain and snow showers, partly cloudy with a slight (20%) chance of rain and snow showers late Monday night,
- Partly cloudy and a bit warmer Tuesday, just mostly clear at night,
- Sunny and warmer Wednesday, then mostly clear Wednesday night.
- snow level 4,500 ft. tonight, 3,500 ft. Monday, 4,000 ft. Monday night, free air freezing level 5,000 ft. Tuesday, 6,500 ft. Tuesday night, 7,000 ft. Wednesday, then 11,000 ft. Wednesday night.
- lows 30-35 highs 42-59.
- Partly cloudy and a bit warmer Thursday and at night,
- Partly cloudy and a bit cooler Friday, mostly cloudy with a slight (20%) chance of showers Friday night,
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Saturday, partly cloudy with a slight (20%) chance of showers at night,
- Then a mix of clouds and sun and a bit warmer Sunday.
- free air freezing level 11,000 ft. Thursday, 12,000 ft. Thursday night, 11,000 ft. Friday, snow level 8,000 ft. Friday night through Saturday night, then 9,000 ft. Sunday.
- highs 62-58 warming to 60 Sunday 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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