Here is my new weekly weather quiz question. What is the “Lifted Index?
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An Upper Level Low is sliding the California coast keeping the flow of coastal moisture aimed our way. The graphics for days 1-3 show a frontal system just offshore Thursday. The graphics for days 3-7 Friday through next Tuesday show a quiet weather pattern until a frontal system slides into the Pacific Northwest Friday and another next Sunday. A third front will be offshore next Tuesday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 27 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 10 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 26 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 SPRAGUE RIVER NEAR BEATTY AFFECTING KLAMATH COUNTY UNTIL SATURDAY EVENING DUE TO SNOW MELT.
- A FLOOD WARNING IS IN EFFECT FOR THE IMNAHA RIVER AFFECTING WALLOWA COUNTY UNTIL MAY 10TH DUE TO SNOW MELT.
HEALTH 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 tonight,
- A mix of clouds and sun and a bit warmer Wednesday, mostly cloudy with a slight (20%) chance of showers and thunderstorms late Wednesday night,
- Mostly cloudy with a good (50%) chance of AM showers and a slight (20%) chance of thunderstorms, a bit cooler with a good (50%) chance of showers Thursday afternoon (under 0.10 in. of rain possible) and at night,
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Friday, then a slight (20%) chance of showers Friday night.
- lows 43-46 cooling back to 43 Friday night highs 66-56.
- Mostly cloudy with a slight (20%) chance of AM showers, a good (50%) chance of showers and a bit warmer Saturday afternoon, a good (50%) chance of showers late at night,
- Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) and a bit cooler Sunday afternoon, a good (50%) chance of evening showers, partly cloudy with a (40%) chance of showers at night,
- Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) and a bit warmer Monday afternoon, partly cloudy with a (40%) chance of evening showers, a slight (20%) chance of showers late Monday night,
- Then a mix of clouds and sun and a bit warmer with a (40%) chance of showers Tuesday.
- highs 59-62 lows 44-39. (seasonal averages high 66 low 42)
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Home Wood Heating Advisory:
Posted Daily
Eugene-Springfield: GREEN– Burning is Allowed.
Oakridge: GREEN– Burning is Allowed.
*Note: Pellet stoves may be used anytime if they produce no visible emissions.
Data courtesy of Lane Regional Air Protection Agency (LRAPA
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Eugene-Springfield Pollen Count:
Grass Pollen: Low (3)
Tree Pollen: High (407)
Last counted: 5.1.23
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Becoming mostly cloudy with a slight (20%) chance of showers late tonight,
- Mostly cloudy with a slight (20%) chance of AM showers, a slight (20%) chance of thunderstorms and a bit warmer Wednesday afternoon and evening, a slight (20%) chance of showers late Wednesday night,
- Mostly cloudy with a slight (20%) chance of showers and a bit cooler Thursday, a slight (20%) chance of showers at night,
- Mostly cloudy and a bit cooler with a (40%) chance of showers Friday, then a slight (20%) chance of showers Friday night.
- lows 46-48 cooling back to 46 Friday night highs 69-59.
- Mostly cloudy and a bit warmer with a (30%) chance of showers Saturday, a (30%) chance of showers Saturday night,
- Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) and a bit cooler Sunday afternoon, a (30%) chance of showers at night,
- Mostly cloudy and a bit warmer with a (40%) chance of showers Monday, partly cloudy with a slight (20%) chance of showers Monday night,
- Then mostly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday.
- highs 60-65 lows 45-42. (seasonal averages high 68 low 46)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Becoming mostly cloudy tonight,
- Mostly cloudy and a bit warmer Wednesday and Wednesday night,
- Mostly cloudy and a bit cooler at the shore while mostly cloudy with a slight (20%) chance of inland showers and a bit cooler Thursday, just mostly cloudy at the shore at night while a slight (20%) chance of inland showers late at night,
- Mostly cloudy and a bit cooler with (20%) chance of showers Friday, then a slight (20%) chance of showers Friday night.
- lows 42-44 cooling back to 42 Friday night highs 58-55.
- Mostly cloudy with a good (50%) chance of showers Saturday and Saturday night,
- Mostly cloudy and a bit warmer with a (40%) chance of showers Sunday, a (30%) chance of showers at night,
- Mostly cloudy with a (30%) chance of showers and a bit warmer Monday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late Monday night,
- Then mostly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday.
- highs 56-58 lows 42-40. (seasonal averages high 59 low 46)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Partly cloudy tonight,
- A mix of clouds and sun with a good (50%) chance of showers and a bit warmer Wednesday with a slight (20%) chance of afternoon thunderstorms, evening showers likely (70%) with a slight (20%) chance of thunderstorms (0.10 in. of rain possible, more in storms), evening showers likely (70%) with a slight (20%) chance of thunderstorms, a slight (20%) chance of showers and thunderstorms late Wednesday night (0.25 in. of rain possible, more in storms),
- Mostly cloudy with a good (50%) chance of AM showers and a slight (20%) chance of thunderstorms, cooler with showers likely (70%) Thursday afternoon and evening, showers and snow showers likely (70%) late Thursday night,
- Mostly cloudy showers likely (70%) with snow showers and a bit cooler Friday, then a good (50%) chance of rain and snow showers late Friday night.
- free air freezing level 10,000 ft. rising to 11,000 ft. late tonight, snow level 8,000 ft. Wednesday and Wednesday night, 7,500 ft. Thursday, 7,000 ft. falling to 5,500 ft. late Thursday night, then 4,500 ft. Friday and Friday night.
- lows 37-32 highs 60-40.
- Mostly cloudy with a good (50%) chance of AM rain and snow showers, a good (50%) chance of showers and a bit warmer Saturday afternoon, a slight (20%) chance of rain and snow showers late Saturday night,
- Mostly cloudy with AM snow showers likely (70%) and a good (50%) chance of rain showers, showers likely (70%) with snow showers Sunday afternoon, evening snow and rain showers likely (70%), a slight (20%) chance of snow and rain showers late Sunday night,
- Mostly cloudy with a good (50%) chance of AM rain and snow showers, rain and snow showers likely (70%) Monday afternoon, a good (50%) chance of evening rain and snow showers, partly cloudy with a slight (20%) chance of rain and snow showers late Monday night,
- Mostly cloudy with a good (50%) chance of AM snow showers, a mix of clouds and sun and a bit warmer with a good (50%) chance of showers Tuesday afternoon.
- snow level 4,500 ft. Saturday through Sunday, 4,000 ft. Sunday night, 3,500 ft. Monday, 4,000 ft. Monday night, then 4,500 ft. Tuesday.
- highs 44-49 lows 32-28.