Mar
10.
Here is my new weekly weather quiz question. “What is a “Psychrometer?”
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An Upper Level Low Pressure Trough (“U” shape) keeps the Pacific Northwest in wet weather. The graphics for days 1-3 show the frontal system moving through Sunday. The graphics for days 3-7 Thursday through Monday show the frontal activity through the period.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 11 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 8 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 PM TUESDAY ABOVE 4,500 FT. FOR THE CASCADES OF LANE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 PM TUESDAY ABOVE 4,500 FT. FOR THE CASCADES IN MARION AND LINN COUNTIES.UNTIL 11 PM TUESDAY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 PM TUESDAY ABOVE 4,000 FT. FOR THE NORTH OREGON CASCADES.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 PM TUESDAY ABOVE 4,000 FT. FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 5 PM TODAY UNTIL 5 PM TUESDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
- A WIND ADVISORY IS IN EFFECT FROM 5 PM TODAY UNTIL 5 PM TUESDAY FOR CENTRAL AND EASTERN LAKE 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:
- Mostly cloudy with a good (50%) chance of AM rain, rain and a bit cooler this afternoon (0.50 in. of rain possible), evening rain, showers late tonight (0.50 in. of rain possible),
- Mostly cloudy and a bit warmer with showers Tuesday (0.25 in,. of rain possible), a good (50%) chance of evening showers, a slight (20%) chance of evening showers, partly cloudy late at night,
- A mix of clouds and sun and a bit warmer Wednesday, then just partly cloudy Wednesday night.
- highs 49-54 lows 43-34.
- Some AM clouds, sunny and warmer Thursday afternoon, partly cloudy Thursday night,
- Some AM clouds, sunny and a bit warmer Friday afternoon, mostly clear at night,
- Mostly sunny and a bit warmer Saturday, mostly clear Saturday night,
- Some AM clouds, then mostly sunny and a bit cooler Sunday afternoon.
- highs 63-72 cooling to 68 Sunday lows 36-43. (seasonal averages high 56 low 37)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: LOW (6)
WEEDS: ABSENT (0)
Measured 3.9.24
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:
- Cloudy with AM rain and snow, rain and a bit cooler this afternoon (under 0.10 in. of rain possible, snow level 2,500 ft. rising to 3,500 ft.), evening rain, showers late tonight (0.10 in. of rain possible, snow level 3,500 ft. late tonight),
- Mostly cloudy with AM showers, showers likely (70%) and a bit warmer Tuesday afternoon (0.10 in. of rain possible, snow level 3,000 ft. falling to 2,500 ft.), a (40%) chance of rain and snow showers at night,
- Mostly cloudy start, partly cloudy and a bit warmer Wednesday afternoon, then mostly clear Wednesday night.
- highs 50-55 lows 43-35.
- Mostly sunny and a bit warmer Thursday and Friday, mostly clear both nights,
- Mostly sunny and slightly warmer Saturday, mostly clear Saturday night,
- Then mostly sunny Sunday.
- highs 63-72 lows 38-46. (seasonal average high 58 low 39)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with AM coastal rain likely (70%) while a good (50%) chance of inland AM showers, a bit cooler with rain this afternoon and breezy (Wind: S 15-25 mph) today (0.25 in. of rain possible), evening rain, showers (0.25 in. of rain possible) late tonight and breezy tonight (Coastal Wind: S 20-30 mph decreasing and shifting SW 10-20 mph late tonight while Inland Wind: SW 10-20 mph late tonight),
- Mostly cloudy with AM showers, a good (50%) chance of coastal showers and a bit warmer Tuesday afternoon while inland showers likely (70%) and a bit warmer in the afternoon (0.10 in. of rain possible), a slight (20%) chance of evening coastal showers while a (30%) chance of inland showers at night,
- Mostly cloudy start, partly cloudy and a bit warmer Wednesday afternoon, then mostly clear Wednesday night.
- highs 52-55 lows 44-38.
- Sunny and a bit warmer Thursday, mostly clear Thursday night,
- Mostly sunny and a bit warmer Friday, mostly clear at night,
- Mostly sunny and a bit cooler Saturday, mostly clear Saturday night,
- Some AM clouds, then sunny and a bit cooler Sunday afternoon.
- highs 62-69 cooling to 64 Sunday lows 43-45 cooling back to 43 Saturday night. (seasonal average high 55 low 42)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County
- Mostly cloudy with rain and snow and a bit cooler this afternoon (0.25 in. of rain possible, 2 in. of snow possible), evening rain and snow, rain and snow showers late tonight (0.75 in. of rain possible, 4-7 in. of snow possible, evening snow possibly heavy at times),
- Mostly cloudy and a bit cooler with snow and rain showers Tuesday and brisk winds (Wind: SW 15-25 mph gusts to 35 mph), evening snow showers with rain showers likely (70%), a good (50%) chance of rain and snow showers Tuesday night,
- A mix of clouds and sun and a bit warmer with a good (50%) chance of snow showers Wednesday, then just mostly clear Wednesday night.
- snow level 3,000 ft. today, 4,000 ft. tonight, 3,000 ft. Tuesday, 2,500 ft. Tuesday night and Wednesday, then free air freezing level 5,500 ft. Wednesday night.
- highs 36-33 warming to 37 Wednesday lows 30-23.
- Mostly sunny and warmer Thursday, mostly clear Thursday night,
- Mostly sunny and a bit warmer Friday, mostly clear at night,
- Then mostly sunny Saturday and Sunday, mostly clear Saturday night,
- free air freezing level 9,000 ft. Thursday and Thursday night, 12,000 ft. Friday and Friday night, then 11,000 ft. Saturday through Sunday.
- highs 48-55 lows 29-33.
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