An Upper Level Low Pressure Trough (“U” shape) is moving slowly southeastward through the Pacific Northwest. Upper Level High Pressure (“Arch”) shape will move in bringing warmer temperatures. The graphics for days 1-3 show a frontal system moving through the Pacific Northwest Wednesday. The graphics for days 3-7 Thursday through Monday show a frontal system pushing into the Pacific Northwest next Monday.
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ADVISORIES:
- NONE AT THIS TIME.
HEALTH ADVISORIES:
- A RECREATION HEALTH ADVISORY HAS BEEN ISSUED FOR LAKE BILLY CHINOOK, PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES SUCH AS WATER SKIING OR POWER BOATING IN AREAS WHERE BLOOMS ARE PRESENT AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER, OREGON HEALTH OFFICIALS SAID. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, THOUGH THOSE WITH SKIN SENSITIVITIES MAY DEVELOP A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGED PEOPLE TO VISIT LAKE BILLY CHINOOK FOR ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BIKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY, WHICH COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.
- 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 this evening, mostly clear late tonight,
- Mostly sunny and a bit warmer Tuesday, mostly cloudy in the evening, partly cloudy late Tuesday night,
- Mostly cloudy start, a mix of clouds and sun and a bit cooler Wednesday afternoon, mostly cloudy at night,
- Mostly cloudy start, a mix of clouds and sun Thursday afternoon, then partly cloudy Thursday night.
- lows 52-54 cooling back to 52 Thursday night highs 83-75.
- Mostly sunny and a bit warmer Friday, mostly clear late Friday night,
- Sunny and a bit warmer Saturday, clear at night,
- Sunny and a bit warmer Sunday, mostly clear Sunday night,
- Then sunny and a bit cooler Monday.
- highs 77-88 cooling to 86 Monday lows 50-54. (seasonal averages high 77 low 49).
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Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy this evening, partly cloudy late tonight,
- AM clouds, sunny and much warmer Tuesday afternoon, mostly cloudy Tuesday night,
- Mostly cloudy and a bit cooler Wednesday and at night,
- Mostly cloudy and a bit cooler Thursday, then mostly cloudy Thursday night.
- lows 58-57 warming to 59 Wednesday night cooling to 55 Thursday night highs 90-76. .
- AM clouds, sunny and a bit warmer Friday afternoon, mostly clear Friday night,
- Mostly sunny and a bit warmer Saturday and Sunday, mostly clear at night,
- Sunny and a bit cooler Monday.
- highs 82-90 cooling to 89 Monday lows 55-62 (seasonal averages high 79 low 54).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with patchy fog late tonight,
- AM clouds with patchy fog, sunny and a bit cooler Tuesday afternoon, mostly cloudy with patchy fog late Tuesday night,
- AM clouds with patchy fog, partly cloudy and a bit warmer Wednesday afternoon, mostly cloudy with patchy fog at night, a slight (20%) chance of coastal drizzle late at night,
- AM clouds with patchy fog and a slight (20%) chance of drizzle, partly cloudy and a bit warmer Thursday afternoon, then partly cloudy Thursday night.
- lows 53-56 cooling to 52 Thursday night highs 62-64.
- Partly cloudy and as bit warmer Friday, mostly clear Friday night,
- Mostly sunny Saturday, mostly clear at night,
- Mostly sunny and a bit warmer Sunday, partly cloudy Sunday night,
- Then partly cloudy and a bit cooler Monday.
- highs 66-68 cooling to 65 Thursday lows 50-52.
- (seasonal averages high 64 low 52). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Partly cloudy tonight,
- Sunny and a bit warmer Tuesday, mostly cloudy Tuesday night,
- Mostly sunny and as bit cooler Wednesday, mostly cloudy at night,
- Mostly sunny and a bit cooler Thursday, then partly cloudy Thursday night.
- free air freezing level 12,000 ft. tonight and Tuesday, 13,000 ft. Tuesday night and Wednesday, then 12,000 ft. Thursday and Thursday night.
- lows 45-43 highs 72-73 cooling 67 Wednesday.
- Mostly sunny and a bit warmer Friday, mostly clear Friday night,
- Sunny and warmer Saturday, clear at night,
- Sunny and a bit warmer Sunday, mostly clear Sunday night,
- Then sunny and a bit cooler Monday.
- free air freezing level 13,000 ft. Friday, 14,000 ft. Friday night and Saturday, then 15,000 ft. Saturday night through Monday.
- highs 63-82 lows 43-42 warming to 46 Saturday night.