Check out my latest Eugene Daily News Weather Or Not column:
http://eugenedailynews.com/2018/04/it-was-their-month-in-history-but-why-didnt-we-know-about-them/
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Here is my weekly weather quiz question. What is “Differential Motion?” 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) has taken over sending us storms. The graphics for days 1-3 show the complex frontal system that moved through Wednesday and the next one moving toward the coast by Friday morning. That means we are between storms today. The graphics for days 3-7 show the frontal systems that will move through the Pacific Northwest Saturday night and and Sunday. Then a frontal system moves toward the coast next Wednesday and Thursday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 6 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 4 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Advisories:
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 5 PM THIS FRIDAY ABOVE 4,500 FT. FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 2 PM THIS AFTERNOON ABOVE 5,000 FT. FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
- 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 showers and a bit cooler with a slight (20%) chance of isolated thunderstorms this afternoon (0.25 in. of rain possible, more in storms, small hail possible), a good (50%) chance of scattered evening showers, a good (50%) chance of rain late tonight (0.10 in. of rain possible),
- Cloudy with AM rain likely (70%), a bit warmer with a good (50%) chance of rain Friday afternoon (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of rain at night (under 0.10 in. of rain possible),
- A slight (20%) chance of showers and a bit warmer Saturday, then rain Saturday night.
- highs 50-59 lows 42-44.
- Mostly cloudy with rain and a bit cooler Sunday, showers likely (70%) Sunday night,
- Showers likely (70%) and a bit cooler Monday and at night,
- Mostly cloudy and a bit warmer with a (40%) chance of showers Tuesday and Tuesday night,
- Then mostly cloudy with a slight (20%) chance of showers and a bit warmer Wednesday.
- highs 52-58 lows 39-36. (seasonal averages high 60 low 39)
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Eugene-Springfield Pollen Count
Grass………. Low (0)
Trees………. Very High (755)
Last Counted: 4/7/18
Data Courtesy of Oregon Allergy Associates.
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Forecast for Roseburg:
- Mostly cloudy with rain and snow showers and a bit cooler today (0.25 in. of rain possible, 1 in. of snow possible, snow level 2,500 ft. rising to 3,000 ft. this afternoon), cloudy with a good (50%) chance of showers tonight (under 0.10 in. of rain possible, snow level 3,000 ft.),
- Cloudy and a bit warmer with a (40%) chance of rain Friday (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of evening rain, just mostly cloudy at night,
- Mostly cloudy and a bit warmer with a slight (20%) chance of rain Saturday afternoon, then rain Saturday night.
- highs 50-64 lows 40-44.
- Mostly cloudy with rain and a bit cooler Sunday, cloudy with showers likely (70%) at night,
- Mostly cloudy and a bit cooler with rain and snow showers likely (70%) Monday, cloudy with a good (50%) chance of rain and snow showers Monday night,
- A good (50%) chance of rain and snow showers Tuesday and a bit warmer, a (40%) chance of showers at night,
- Then mostly cloudy with a slight (20%) chance of showers Wednesday.
- highs 54-50 warming to 60 Wednesday lows 39-37 warming back to 39 Tuesday night. (seasonal averages high 61 low 41)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy and a bit cooler with showers today (0.25 in. of rain possible), a good (50%) chance of evening coastal showers and a good (50%) chance of rain late tonight while a good (50%) chance of inland showers tonight (under 0.10 in. of rain possible),
- Cloudy with AM coastal rain likely (70%) and a bit warmer with a slight (20%) chance of coastal rain in the afternoon while a good (50%) chance of inland rain Friday (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of coastal rain at night,
- Mostly cloudy with a (40%) chance of coastal rain and a bit warmer while a slight chance of inland rain Saturday afternoon and a bit warmer, then rain Saturday night.
- highs 50-58 lows 43-46.
- Mostly cloudy with rain and a bit cooler Sunday, showers likely (60%) Sunday night through Monday night,
- Mostly cloudy and a bit warmer with a (30%) chance of showers Tuesday, then a slight (20%) of showers Tuesday night and Wednesday (a bit warmer).
- highs 52-50 warming to 56 Wednesday lows 40-42. (seasonal averages high 55 low 43)
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Forecast for the Cascades in Lane County:
- AM snow showers, a bit cooler with rain and snow showers and a slight (20%) chance of isolated thunderstorms this afternoon (0.50 in. of rain possible, more in storms, small hail possible, 5-9 in. of snow possible), evening rain and snow showers, a good (50%) chance of rain and snow showers late tonight (0.10 in. of rain possible, 1-4 in. of snow possible),
- Cloudy and a bit warmer with AM rain and snow likely (70%) Friday (1-3 in. of snow possible), a slight (20%) chance of evening rain and snow, just mostly cloudy Friday night,
- Mostly cloudy and a bit warmer Saturday, then rain and snow likely (70%) at night.
- snow level 2,000 ft. today, 3,000 ft. tonight, 3,000 ft. rising to 5,000 ft. Friday afternoon, 5,500 ft. Friday night, 4,500 ft. Saturday, then 5,500 ft. Saturday night.
- highs 32-45 lows 25-32.
- Mostly cloudy with rain and snow and a bit cooler Sunday, rain and snow showers and a bit cooler Sunday night,
- Snow showers likely (70%) and a bit cooler Monday, rain and snow showers likely (70%) at night,
- Mostly cloudy and a bit warmer with a (40%) chance of rain and snow showers Tuesday and Tuesday night,
- Then mostly cloudy with a slight (20%) chance of rain and snow showers and a bit warmer Wednesday.
- snow level 4,500 ft. Sunday, 3,000 ft. Sunday night, 2,500 ft. Monday, 3,000 ft. Monday night and Tuesday, then 4,000 ft. Tuesday night and Wednesday.
- highs 38-33 warming to 42 Wednesday lows 24-26.
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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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