Apr
28.
Here is my new weekly weather quiz question. “What is a “Red Flag Warning?”
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An Upper Level Low Pressure Trough (“U” shape) sitting right over the Pacific Northwest. The graphics for days 1-3 show a frontal system that slid through Pacific Northwest today. The graphics for days 3-7 Wednesday through Monday show the frontal systems that will be moving across the Pacific Northwest through the period.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 15 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 20 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 16 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 11 AM TODAY FOR THE NORTH OREGON CASCADES, THE CASCADES OF MARION AND LINN COUNTIES, AND THE CASCADES OF LANE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM TODAY ABOVE 4,000 FT. THE EAST SLOPES OF THE OREGON CASCADES.FOR
- A FLOOD WARNING IS IN EFFECT UNTIL WEDNESDAY MORNING FOR THE OWYHEE RIVER BELOW THE OWYHEE DAM AFFECTING MALHEUR COUNTY.
- A FREEZE WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING FOR EASTERN CURRY COUNTY AND AND JOSEPHINE COUNTY.
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:
- AM clouds with showers and a slight (20%) chance of thunderstorms, a mix of clouds and sun with a slight (20%) chance of showers and thunderstorms and a slightly cooler this afternoon (0.25 in. of rain possible, more in storms), partly cloudy with scattered evening showers, mostly cloudy, showers late tonight (under 0.10 in. of rain possible),
- Mostly cloudy and bit cooler with showers and a slight (20%) chance of thunderstorms Tuesday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy at night,
- Mostly sunny and a bit warmer Wednesday, then partly cloudy with a slight (20%) chance of showers Wednesday night.
- highs 56-63 lows 39-37 warming to 42 Wednesday night.
- A mix of clouds and sun and a bit warmer with a (30%) chance of showers Thursday, partly cloudy Thursday night,
- Mostly sunny and a bit warmer Friday, mostly cloudy with a (40%) chance of showers at night,
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Saturday, a (50%) chance of showers Saturday night,
- Then a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Sunday.
- highs 65-69 cooling to 62 Sunday lows 42-47 (seasonal averages high 64 low 42)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: MODERATE (70)
WEEDS: ABSENT (0)
Measured 4.28.24
Data courtesy of Oregon Allergy Associates.
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Home Wood Heating Advisory:
Eugene-Springfield: GREEN- Burning wood in wood stoves or fireplaces is allowed.
Oakridge: GREEN- Burning wood in wood stoves or fireplaces is allowed.
*Pellet stoves can be used anytime since they don’t produce the particulate smoke.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with AM rain showers and snow showers and a slight (20%) chance of thunderstorms, a good (50%) chance of showers and a bit cooler with a slight (20%) chance of thunderstorms this afternoon (under o.10 in. of rain possible, snow level 3,000 ft., no snow accumulation expected), partly cloudy with a (30%) chance of rain and snow showers late tonight (snow level 2,500 ft.),
- Mostly cloudy with a AM rain and snow showers likely (70%), a slight (20%) chance of showers Tuesday afternoon, partly cloudy with a slight (20%) chance of evening showers, partly cloudy with patchy frost late at night,
- Areas of AM frost, sunny and a bit warmer Wednesday afternoon, mostly clear in the evening, then partly cloudy with a slight (20%) chance of showers Wednesday night.
- highs 57-66 lows 39-42.
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Thursday, just partly cloudy Thursday night,
- Partly cloudy and a bit warmer Friday, a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late at night,
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Saturday, a (40%) chance of showers Saturday night,
- Then mostly cloudy and a bit cooler with a (40%) chance of showers Sunday.
- highs 69-74 cooling to 64 Sunday lows 45-49 cooling to 47 Saturday night. (seasonal average high 67 low 45)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with AM showers and a slight (20%) chance of showers and a slight (20%) chance of thunderstorms, partly cloudy and slightly cooler with a slight (20%) chance of thunderstorms this afternoon (under 0.10 in. of rain possible), partly cloudy this evening, mostly cloudy with a (30%) chance of showers late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with AM coastal showers likely (70%), a bit warmer with a (50%) chance of showers Tuesday afternoon while a (40%) chance of inland showers at night,
- Sunny and a bit warmer Wednesday, then partly cloudy with a slight (20%) chance of showers Wednesday night.
- highs 55-62 lows 42-38 warming back to 42 Wednesday night.
- Partly cloudy with a slight (20%) chance of showers Thursday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Thursday night,
- Partly cloudy and a bit warmer Friday, partly cloudy with a slight (20%) chance of evening rain, mostly cloudy with a (20%) chance of showers late at night,
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Saturday, a good (50%) chance of showers Saturday night,
- Then mostly cloudy with a good (50%) chance of showers Sunday.
- highs 62-64 cooling to 59 Saturday and Sunday lows 43-46. (seasonal average high 58 low 46)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with AM rain and snow showers and a slight (20%) chance of thunderstorms (0.50 in. of rain possible, 2-4 in. of snow possible, snow possibly heavy at times), a bit cooler with a good (50%) chance of rain and snow showers this afternoon (AM snow possibly heavy at times), snow and rain showers tonight (0.50 in. of rain possible, 1 in of snow possible),
- Mostly cloudy and a bit warmer with snow and rain showers Tuesday, evening snow showers likely (70%) and a good (50%) chance of rain and snow showers with a slight (20%) chance of snow showers at night,
- Sunny and warmer Wednesday, partly cloudy with evening snow showers likely (70%) and a slight (20%) chance of rain showers, then partly cloudy with a slight (20%) chance of rain and snow showers late Wednesday night.
- snow level 3,000 ft. today, 2,500 ft. tonight, 2,500 ft. rising to 4,000 ft. Tuesday afternoon, 3,000 ft. Tuesday night, free air freezing level 5,500 ft. Wednesday, then snow level 5,000 ft. 5,000 ft. Wednesday night,
- highs 36-48 lows 25-30.
- A mix of clouds and sun with a (40%) chance of rain and snow showers and a bit warmer Thursday, mostly cloudy with a (40%) chance of evening rain and snow showers, partly cloudy with a slight (20%) chance of showers late Thursday night,
- Mostly sunny and a bit warmer Friday, partly cloudy with a (40%) chance of evening showers, mostly cloudy with a (40%) chance of showers late at night,
- AM clouds and sun with with a good (50%) chance of showers, a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Saturday afternoon, mostly cloudy with showers likely (70%) and a slight (20%) chance of snow showers Saturday night,
- Then mostly cloudy with rain and snow showers likely (70%) and a bit cooler Sunday.
- snow level 5,500 ft. Thursday, 6,500 ft. Thursday night, free air freezing level 9,000 ft. Friday, snow level 7,500 Friday night, 7,000 ft. Saturday, 6,000 ft. Saturday night, then 5,500 ft. Sunday.
- highs 52-59 cooling back to 52 Sunday lows 32-38 cooling to 34 Saturday night.
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