An Upper Level High Pressure Ridge (“Arch” shape) is moving in to bring us dry sunshiny days and chilly nights for the Pacific Northwest. The graphics for days 1-3 show a frontal system moving through through Thursday. The graphics for days 3-7 Friday through Tuesday show the no frontal activity the period until a stationary front snakes along the entire West Coast Sunday through Tuesday.
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ADVISORIES:
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM THURSDAY FOR THE WEST CENTRAL WILLAMETTE VALLEY, THE EAST CENTRAL WILLAMETTE VALLEY, THE BENTON COUNTY LOWLANDS, THE LINN COUNTY LOWLANDS, AND THE LANE COUNTY LOWLANDS.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM THURSDAY FOR THE SOUTH CENTRAL OREGON COAST CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, THE KLAMATH BASIN, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 11 AM MST FRIDAY FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.
- A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT THROUGH TUESDAY EVENING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
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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.
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Cloudy with patchy fog late tonight,
- Mostly cloudy with patchy AM fog, mostly sunny, a bit warmer, Wednesday afternoon, mostly clear in the evening frost, partly cloudy with patchy fog late Wednesday night,
- Mostly cloudy with patchy AM fog, mostly sunny and a bit warmer Thursday, mostly clear in the evening, mostly cloudy late at night,
- Patchy AM fog, sunny and a bit cooler Friday, mostly clear with patchy evening fog, then partly cloudy with patchy fog late Friday night.
- lows 36-28 highs 42-45 cooling back to 42 Friday. .
- Mostly sunny with and a bit cooler Saturday, mostly clear Saturday night,
- Sunny and a bit cooler Sunday, mostly clear at night,
- Sunny Monday (Martin Luther King, Jr.Day), partly cloudy in the evening, mostly cloudy late Monday night,
- Then mostly sunny Tuesday.
- highs 42-44 lows 28-25 (seasonal averages high 48 low 35)
HOME WOOD HEATING ADVISORY:
Eugene & Springfield: YELLOW – Caution, the burning of wood in wood stoves and fireplaces is allowed, but don’t use if it’s not necessary.
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:
- Mostly clear with patchy evening fog, areas of fog becoming widespread fog late tonight,
- Areas of AM fog, sunny and a bit warmer Wednesday afternoon, mostly clear in the evening, partly cloudy with widespread fog late Wednesday night,
- Areas of AM fog, sunny and a bit warmer Thursday afternoon, partly cloudy with patchy evening fog, mostly cloudy with patchy fog late at night,
- Some AM clouds with patchy fog and freezing fog, sunny and a bit cooler Friday afternoon, partly cloudy with areas of evening freezing fog and patchy fog, widespread freezing fog late Friday night.
- lows 37-28 highs 50-53 cooling to 46 Friday.
- Some AM clouds with areas of freezing fog, partly cloudy and a bit cooler Saturday afternoon, mostly clear Saturday night,
- Sunny Sunday, mostly clear at night,
- Mostly sunny and a bit warmer Monday (Martin Luther King, Jr.Day), partly cloudy Monday night,
- Then partly cloudy and a bit warmer Tuesday.
- highs 45-47 cooling to 44 Monday warming to 52 Tuesday lows 30-28. (seasonal averages high 50 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear with areas of patchy evening coastal fog and areas of coastal fog and patchy frost frost late tonight while patchy inland fog tonight,
- Areas of AM coastal fog, sunny and a bit warmer with patchy fog Wednesday afternoon, mostly clear in the evening, partly cloudy with areas of fog and patchy frost late Wednesday night,
- Areas of AM clouds with fog and patchy frost, sunny and a bit cooler Thursday afternoon with patchy coastal fog, partly cloudy with patchy fog and areas of frost late at night,
- Partly cloudy with areas of AM frost and patchy fog, sunny and a bit cooler Friday afternoon, mostly clear and colder with widespread frost and patchy fog Friday night, widespread freezing fog late Friday night.
- lows 36-29 highs 59-50.
- Widespread AM frost and areas of freezing fog, partly cloudy and a bit cooler Saturday afternoon, mostly clear Saturday night,
- Sunny and a bit warmer Sunday, mostly clear at night,
- Mostly sunny and a bit warmer Monday (Martin Luther King, Jr.Day), partly cloudy Monday night,
- Then partly cloudy Tuesday.
- highs 52-54 lows 30-28 warming back to 30 Monday night (seasonal averages high 54 low 41)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Some evening clouds, mostly clear tonight,
- Sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Sunny and a bit warmer Thursday, partly cloudy in the evening, mostly cloudy Thursday night,
- Sunny Friday, then mostly clear Friday night.
- free air freezing level 10,000 ft. falling to 9,000 ft. late tonight, 10,000 ft. rising to 11,000 ft. Wednesday afternoon, 11,000 ft. falling to 10,000 ft. Wednesday night, 10,000 ft. falling to 9,000 ft. Thursday, 7,500 ft. falling to 3,500 ft Thursday night, at the surface Friday, then 4,000 ft. Friday night,
- low 22-16 highs 45-33.
- Sunny a bit cooler Saturday, mostly clear Saturday night,
- Sunny and a bit cooler Sunday, mostly clear at night,
- Sunny and a bit warmer Monday (Martin Luther King, Jr.Day), partly cloudy Monday night,
- Then mostly sunny Tuesday.
- snow level free air freezing level 4,000 ft. Saturday, at the surface Saturday night through Sunday night, 3,500 ft. Monday, 4,000 ft. Monday night, then 8,000 ft. Tuesday.
- highs 32-39 lows 17-14 warming to 19 Monday night.