Jan
31.
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 two frontal systems hitting Oregon. The graphics for days 3-7 Monday through Friday 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 58 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 32 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- A WINTER STORM WARNING IS IN EFFECT FROM 10 PM TONIGHT UNTIL 4 AM SUNDAY FOR THE NORTH OREGON COAST RANGE.
- A WINTER STORM WARNING IS IN EFFECT UNTIL UNTIL 4 AM SUNDAY ABOVE 2,500 FT. FOR THE NORTH OREGON CASCADES, THE CASCADES OF MARION AND LINN COUNTIES, AND THE CASCADES OF LANE COUNTY.
- *A WINTER STORM WARNING IS IN EFFECT UNTIL 10 AM SATURDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM SATURDAY UNTIL 4 AM SATURDAY ABOVE 1,500 FT. FOR THE WEST COLUMBIA RIVER GORGE OF OREGON ABOVE 500 FT., THE CLACKAMAS COUNTY FOOTHILLS, AND THE CASCADE FOOTHILLS OF MARION AND LINN COUNTIES.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM SATURDAY FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM SATURDAY ABOVE 4,000 FT. FOR THE NORTHERN BLUE MOUNTAINS OF OREGON.
- A WINTER STORM WATCH IS IN EFFECT FROM SATURDAY MORNING THROUGH MONDAY MORNING ABOVE 4,500 FT. FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT 10 AM SATURDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
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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 cloudy with showers tonight (0.50 in. of rain possible),
- AM clouds and sun with a good (50%) chance of showers, mostly cloudy and a bit cooler with a good (50%) chance of showers Saturday afternoon, evening showers likely (70%), snow showers likely (70%) with a (40%) chance of rain showers late Saturday night,
- Mostly cloudy and a bit cooler with rain showers with snow showers likely (70%) Sunday (snow level 1,000 ft.), evening snow and rain showers, snow showers likely (70%) with a slight (20%) chance of rain showers late Sunday night (snow level 500 ft.),
- Mostly cloudy with snow with rain likely (70%) Monday (snow level 1,000 ft.), snow likely (70%) with a slight (20%) chance of rain showers Monday night (snow level 500 ft.).
- lows 36-28 highs 45-42.
- Mostly cloudy and a bit cooler with snow showers likely (70%) and a slight (20%) chance of rain showers Tuesday (snow level 500 ft.), snow showers likely (70%) Tuesday night (snow level 500 ft.),
- Mostly cloudy with snow showers likely (70%) and a slight (20%) chance of rain showers Wednesday (snow level 500 ft.), snow showers likely (70%) with a slight (20%) chance of rain showers Wednesday night,
- Mostly cloudy with snow showers likely (70%) with a slight (20%) chance of rain showers and a bit warmer Thursday (snow level 500 ft.), rain and snow showers likely (70%) Thursday night (snow level 1,000 ft.),
- Mostly cloudy with with a good (50%) chance of AM rain and snow showers, then a mix of clouds and sun and a good (50%) chance of rain and snow showers and a bit warmer Friday afternoon.
- highs near 39 lows 27-25 warming back to 27 Friday. (seasonal averages high 50 low 35)
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HOME WOOD HEATING ADVISORY:
The Eugene & Springfield: GREEN– Fireplace and wood stove used is allowed. Protect air quality by not heating with wood when possible.
Oakridge And Westfir: GREEN– Fireplace and wood stove used is allowed. 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 cloudy with evening showers, rain and snow showers late tonight with patchy dense fog (snow level 2,000 ft. late tonight, little or no snow accumulation expected),
- Mostly cloudy with AM rain and snow showers and patchy fog, a good (50%) chance of rain and snow showers and a bit cooler with patchy dense fog Saturday afternoon, a (40%) chance of evening rain and snow showers, rain and snow likely (70%) with patchy fog late Saturday night,
- Mostly cloudy with rain and snow and a bit cooler Sunday (snow level 1,000 ft.), evening rain and snow, rain and snow likely (70%) late Sunday night,
- Mostly cloudy and a bit cooler with rain and snow likely (70%) Monday, then rain and snow likely (70%) Monday night.
- lows 38-30 highs 46-42. .
- Mostly cloudy with AM snow likely (70%), rain and snow and a bit cooler Tuesday afternoon, snow likely (70%) Tuesday night,
- Mostly cloudy with rain and snow likely (70%) and a bit warmer Wednesday and at night,
- Mostly cloudy with rain and snow likely (70%) Thursday, rain and snow likely (70%) Thursday night,
- Then mostly cloudy with rain and snow likely (70%) Friday.
- highs near 40-42 lows near 28 (seasonal averages high 52 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with showers tonight patchy inland fog late tonight (snow level 2,000 ft. late tonight),
- Mostly cloudy with AM coastal showers while inland AM patchy fog with rain and snow showers and a bit cooler with a good (50%) chance of coastal rain Saturday afternoon while inland AM rain and snow showers and a good (50%) chance of inland rain and snow in the afternoon (snow level 1,500 ft. no snow accumulation expected), cloudy a (40%) chance of evening coastal showers with coastal showers likely (70%) late at night while a good (50%) chance of evening inland rain and snow with inland rain and snow likely (70%) late Saturday night (snow level 1,500 ft. falling to 1,000 ft. late at night),
- Mostly cloudy and a bit cooler with coastal rain while inland AM rain and snow likely (70%) and inland rain and snow Sunday afternoon (snow level 1,000 ft.), rain and snow at night (snow level 700 ft.),
- Then mostly cloudy and a bit cooler with a rain and snow Monday and Monday night.
- lows 36-28 highs 49-46.
- Mostly cloudy with rain and snow Tuesday and Tuesday night,
- Mostly cloudy with rain and snow Wednesday, evening rain and snow, rain and snow likely (70%) late at night,
- Mostly cloudy with rain and snow likely (70%) Thursday, rain and snow likely Thursday night,
- Mostly cloudy with AM rain and snow likely (70%), then rain likely (70%) and a bit warmer Friday afternoon.
- highs 46-48 lows near 29 (seasonal averages high 54 low 41)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with rain and snow showers tonight (1.50 in. of rain possible, 8-14 in. of snow possible, snow possibly heavy at times),
- Mostly cloudy and a bit cooler with snow showers likely (70%) Saturday (1-3 in. of snow possible), snow showers Saturday night (1 in. of snow possible),
- Mostly cloudy with snow showers and a bit cooler Sunday (snow possibly heavy at times), then snow showers Sunday night,
- Mostly cloudy and a bit cooler with snow showers Monday, then snow showers likely (70%) Monday night.
- snow level 5,000 ft. falling to 3,000 ft. late tonight, then at the surface Saturday night through Monday night,
- low 26-15 highs 29-25.
- Mostly cloudy with snow showers Tuesday, snow showers likely (70%) Tuesday night,
- Mostly cloudy with snow showers Wednesday, snow showers likely (70%) at night,
- Mostly cloudy and a bit warmer with snow showers likely (70%) Thursday, snow showers likely (70%) Thursday night,
- Then mostly cloudy and a bit warmer with snow showers likely (70%) Friday.
- snow level at the surface Tuesday through Friday.
- highs 25-30 lows 13-15.