Jan
18.
An Upper Level High Pressure Ridge (“Arch” shape) is sending a cold airflow from the north over the Pacific Northwest keeping us dry with fog and colder than normal for the Pacific Northwest. The graphics for days 1-3 show a stationary front stuck along the Pacific coast. The graphics for days 3-7 Wednesday through Sunday show the stationary front snaking along the entire West Coast, then a cold front will push through Friday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 77 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 67 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 83 in the Moderate category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- A COLD WEATHER ADVISORY IS IN EFFECT FROM 10 AM TODAY UNTIL 10 AM MONDAY FOR THE CLATSOP COUNTY COAST, THE TILLAMOOK COUNTY COAST, THE CENTRAL COAST OF OREGON, THE NORTH CENTRAL OREGON COAST RANGE LOWLANDS, THE CENTRAL OREGON COAST LOWLANDS, THE NORTH OREGON COAST RANGE, THE CENTRAL OREGON COAST RANGE, THE LOWER COLUMBIA RIVER, THE TUALATIN VALLEY, THE PORTLAND WEST HILLS AND CHEHALEM MOUNTAIN,THE INNER PORTLAND METRO, EAST PORTLAND METRO, THE WEST CENTRAL WILLAMETTE VALLEY, THE BENTON COUNTY LOWLANDS, THE LINN COUNTY LOWLANDS, THE LANE COUNTY LOWLANDS, THE WEST COLUMBIA GORGE OF OREGON ABOVE 500 FT., THE WEST COLUMBIA RIVER GORGE I-84 CORRIDOR, THE UPPER HOOD RIVER VALLEY, THE CENTRAL COLUMBIA RIVER GORGE I-84 CORRIDOR, THE CLACKAMAS COUNTY CASCADE FOOTHILLS, THE CASCADE FOOTHILLS OF MARION AND LINN COUNTIES, AND THE LANE COUNTY CASCADE FOOTHILLS.
- A FREEZE WARNING IS IN EFFECT FROM 1 AM UNTIL 8 AM TODAY FOR THE SOUTH CENTRAL OREGON COAST.
- A BEACH HAZARDS STATEMENT IS IN EFFECT FOR DANGEROUS SNEAKER WAVES UNTIL 6 PM TONIGHT FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM TUESDAY FOR THE SOUTH CENTRAL OREGON COAST.
- A BEACH HAZARDS STATEMENT IS IN EFFECT FOR DANGEROUS SNEAKER WAVES THROUGH LATE TONIGHT FOR THE CLATSOP COUNTY COAST AND THE TILLAMOOK COUNTY COAST.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM TUESDAY FOR THE SOUTH CENTRAL OREGON COAST, CENTRAL DOUGLAS COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH 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:
- Widespread AM frost and patchy fog, sunny and a bit warmer with areas of frost this afternoon, mostly clear with widespread frost late tonight,
- Widespread AM frost, sunny Monday afternoon (Martin Luther King, Jr.Day), partly cloudy with widespread evening frost, mostly cloudy with widespread frost late Monday night,
- Mostly sunny with widespread frost Tuesday, then partly cloudy Tuesday night.
- highs 43-45 lows 25-27. .
- Mostly sunny and a bit cooler Wednesday, partly cloudy Wednesday night,
- Mostly sunny and a bit warmer Thursday, partly cloudy with a good (50%) chance of evening rain, mostly cloudy with a good (50%) chance of rain late at night,
- A mix of clouds and sun with a good (50%) chance of rain Friday, mostly cloudy with a (40%) chance of rain Friday night,
- Then a mix of clouds and sun and a bit cooler with a (30%) chance of rain Saturday.
- highs 43-45 cooling back to 43 Saturday lows 28-32 (seasonal averages high 48 low 35)
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HOME WOOD HEATING ADVISORY:
Eugene & Springfield: GREEN – The burning of wood in wood stoves and fireplaces is allowed.
Oakridge And Westfir: GREEN – The burning of wood in wood stoves and fireplaces is allowed.
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:
- Areas of AM freezing fog, sunny and a bit cooler this afternoon, mostly clear with evening patchy fog and freezing fog, mostly cloudy with areas of freezing fog late tonight,
- Mostly cloudy with patchy AM freezing fog, sunny and a bit warmer Monday afternoon (Martin Luther King, Jr.Day), partly cloudy with patchy freezing fog at night,
- Partly cloudy with patchy AM fog and freezing fog, sunny and a bit warmer Tuesday afternoon, then mostly clear Tuesday night.
- highs 42-43 lows 27-30 cooling to 28 Tuesday night.
- Mostly sunny and a bit warmer Wednesday, mostly clear in the evening, partly cloudy late Wednesday night,
- Partly cloudy and a bit warmer Thursday and in the evening, mostly cloudy with a slight (20%) chance of rain late at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of rain Friday, a slight (20%) chance of rain Friday night,
- Then partly cloudy Saturday.
- highs 44-47 cooling to 46 Saturday lows 32-36 cooling back to 32 Friday night. (seasonal averages high 50 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Widespread AM coastal frost and areas of freezing fog while widespread inland AM frost, sunny this afternoon, mostly clear with areas of evening frost, widespread frost and areas of freezing fog late tonight,
- Widespread AM frost, sunny and a bit warmer Monday (Martin Luther King, Jr. Day), partly cloudy with widespread frost late at night,
- Partly cloudy with widespread AM frost, sunny and a bit warmer Tuesday afternoon, then mostly clear Tuesday night.
- highs 53-55 cooling to 52 Tuesday lows 29-32 Friday night.
- Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Partly cloudy start, partly cloudy Thursday afternoon and evening, mostly cloudy with a slight (20%) chance of rain late at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of rain Friday and Friday night,
- Then partly cloudy and a bit warmer with a slight (20%) chance of rain Saturday.
- highs 56-50 warming to 52 Saturday lows 33-36 cooling to 32 Saturday. (seasonal averages high 54 low 41)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Sunny and a bit warmer today, clear tonight,
- Sunny and a bit cooler Monday (Martin Luther King, Jr.Day), mostly clear in the evening, mostly cloudy at night,
- Mostly sunny and warmer Tuesday, then mostly clear Tuesday night.
- free air freezing level 5,500 ft. late today, 4,500 ft. tonight, 4,000 ft. rising to 6,500 ft. Monday afternoon, 7,500 ft. falling to 7,000 ft. Monday night and Tuesday, then 6,000 ft Tuesday night.
- highs 37-32 warming to 42 Tuesday low 13-23.
- Sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Mostly sunny Thursday, partly cloudy with a good (50%) chance of evening rain and snow, mostly cloudy with a good (50%) chance of rain and snow late at night,
- A mix of clouds and sun and cooler with a good (50%) chance of snow and rain Friday, mostly cloudy with a good (50%) chance of snow and rain Friday night,
- Then a mix of clouds and sun and a bit cooler with snow likely (70%) and a (40%) chance of rain Saturday.
- free air freezing level 10,000 ft. Wednesday and Wednesday night, 11,000 ft. Thursday, snow level 5,000 ft. Thursday night, 3,500 ft. Friday, 3,000 ft. Friday night, then 2,000 ft. Saturday.
- highs 45-32 lows 28-19.