Jan
29.
An Upper Level Low Pressure Trough (“U” shape) takes over from the Upper Level High Pressure Ridge allowing clouds and rain to move into the Pacific Northwest. The graphics for days 1-3 show no frontal systems approaching the West Coast. The graphics for days 3-7 Saturday through Wednesday show that frontal systems that will be heading our way through the period.
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Air Quality Index
Eugene/Springfield: The Air Quality Index is 65 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 81 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 74 in the Moderate category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- *A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM FRIDAY UNTIL 10 PM SATURDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
- *A WINTER STORM WATCH IS IN EFFECT FROM THURSDAY EVENING THROUGH SATURDAY AFTERNOON ABOVE 3,000 FT. FOR THE NORTH OREGON CASCADES, THE CASCADES OF MARION AND LINN COUNTIES, AND THE CASCADES OF LANE COUNTY.
- *A WINTER STORM WATCH IS IN EFFECT FROM THURSDAY EVENING THROUGH SATURDAY AFTERNOON FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A COLD WEATHER ADVISORY IS IN EFFECT FROM 10 AM TODAY FOR THE TUALATIN VALLEY, THE WEST CENTRAL WILLAMETTE VALLEY, THE EAST CENTRAL WILLAMETTE VALLEY, THE BENTON COUNTY LOWLANDS, THE LINN COUNTY LOWLANDS, AND THE LANE COUNTY LOWLANDS.
- A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 9 AM TODAY FOR THE SOUTH CENTRAL OREGON COAST.
- *AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL NOON THURSDAY FOR SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL , AND EASTERN LAKE COUNTY.
- *AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 AM FRIDAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON, AND THE LOWER COLUMBIA BASIN OF OREGON, THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, NORTH CENTRAL OREGON, AND CENTRAL OREGON.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL NOON THURSDAY FOR THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, JACKSON COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
- *AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 9 AM MST FRIDAY FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.
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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 clear with areas of evening frost, partly cloudy with patchy fog and widespread frost late tonight,
- Widespread AM frost, a mix of clouds with widespread AM frost with patchy dense fog, mostly cloudy and a bit cooler with a good (50%) chance of rain Thursday afternoon, a (40%) chance of evening rain (under 0.10 in. of rain possible), mostly cloudy with rain late Thursday night (0.50 in. of rain possible),
- Mostly cloudy and a bit warmer with rain Friday, showers at night.
- lows 28-40 cooling to 33 Saturday night highs 47-52 cooling to 44 Friday.
- Mostly cloudy and a bit cooler with showers Saturday, rain Saturday night,
- Mostly cloudy and a bit cooler with rain and a slight (20%) chance of snow Sunday (snow level 1,000 ft.), rain with snow likely (70%) at night (snow level 1,500 ft.)
- Mostly cloudy with rain and snow likely (70%) Monday (snow level 1,500 ft.), rain and snow likely (70%) Monday night (in the higher hills, no snow accumulation expected) ,
- Mostly cloudy and a bit cooler with rain and snow likely likely (70%) Tuesday (snow level 1,000 ft.), rain and snow likely (70%) Tuesday night (snow level 1,000 ft.),
- Then mostly cloudy with snow likely (70%) and a slight (20%) chance of rain Wednesday (snow level 500 ft.),
- highs 42-40 lows 32-27. (seasonal averages high 49 low 35)
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HOME WOOD HEATING ADVISORY:
The Eugene & Springfield: YELLOW – Fireplace and wood stove used is cautioned. Protect air quality by not heating with wood when possible.
Oakridge And Westfir: YELLOW – Fireplace and wood stove used is cautioned. Protect air quality by not heating with wood when possible.
The use of pellet stoves is always allowed.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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:Forecast for the Umpqua Valley including Roseburg
- Mostly clear with patchy fog late tonight,
- Patchy AM fog, mostly cloudy and a bit cooler Thursday, cloudy with rain Thursday night,
- Mostly cloudy and a bit cooler with rain Friday, rain Friday night (snow level 2,000 ft. late tonight),
- Mostly cloudy with rain and snow likely (70%) and a bit cooler Saturday, then rain and snow likely (70%) Saturday night,
- lows 27-40 cooling to 36 Saturday night highs 52-44.
- Mostly cloudy with rain and snow and a bit cooler Sunday, rain and snow Sunday night,
- Mostly cloudy with rain and snow Monday, rain and snow likely (70%) at night,
- Mostly cloudy with AM rain and snow likely (70%), rain and snow Tuesday night,
- Mostly cloudy with AM snow likely (70%), then rain and snow Wednesday afternoon.
- highs near 42 lows 34-25 (seasonal averages high 51 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy with evening inland patchy fog, mostly cloudy late tonight,
- Cloudy with a (30%) chance of rain Thursday afternoon, cloudy with a good (50%) chance of evening coastal rain late Thursday night while inland rain Thursday night, breezy (Wind: S 15-25 mph),
- Mostly cloudy with rain and breezy (Wind: S 15-25 mph, early afternoon gusts to 40 mph until early afternoon) and a bit warmer Friday, rain Friday night (snow level 2,000 ft. late at night),
- Mostly cloudy with rain and a bit cooler Saturday, then rain and snow likely (70%) Saturday night.
- lows 28-45 cooling to 35 Saturday night highs 49-53 cooling to 47 Saturday.
- Mostly cloudy and a bit cooler with rain and snow Sunday, rain and snow Sunday night,
- Mostly cloudy with rain and snow Monday, rain and snow at night,
- AM rain and snow likely (70%), mostly cloudy with rain and snow Tuesday, rain and snow Tuesday night,
- Then mostly cloudy and a bit warmer with rain and snow Wednesday.
- highs 45-47 lows 34-29 (seasonal averages high 54 low 41)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Clear tonight,
- Mostly sunny and a bit cooler with a slight (20%) chance of rain Thursday afternoon, evening snow with a slight (20%) chance of rain, mostly cloudy with snow and rain late Thursday night (0.50 in. of rain possible, 1-3 in. of snow possible),
- Mostly cloudy and cooler with rain and snow Friday (snow possibly heavy at times), rain and snow showers Friday night (snow possibly heavy at times),
- Mostly cloudy and a bit cooler with snow and rain showers Saturday, then snow showers likely (70%) Saturday night.
- free air freezing level 10,000 ft. falling to 9,000 ft. tonight, snow level 3,500 ft. Thursday, 4,500 ft. Thursday night, 5,500 ft Friday, then 5,000 ft. falling to 4,000 ft. Friday night.
- low 26-32 cooling to 22 Saturday night highs 46-30.
- Mostly cloudy with snow and a bit cooler Sunday, snow Sunday night,
- Mostly cloudy and a bit warmer with snow Monday, snow at night,
- Mostly cloudy with snow Tuesday snow likely (70%) Tuesday night,
- Then mostly cloudy with snow Wednesday.
- snow level at the surface Sunday, 2,000 ft. Sunday night and Monday, 2,500 ft. Monday night, then at the surface Tuesday through Wednesday.
- highs 28-26 lows 22-15.