An Upper Level Low Pressure Trough (“U” shape) has continued the onshore airflow keeping us cool through the Pacific Northwest. An Upper Level High Pressure Ridge will take over beginning a warming trend. The graphics for days 1-3 show no frontal systems moving through the Pacific Northwest. The graphics for days 3-7 Sunday through Thursday show a frontal system pushing into the Pacific Northwest next Thursday.
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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:
- AM clouds and sun, sunny today, partly cloudy this evening, mostly clear tonight,
- Sunny and a bit warmer Saturday, clear at night,
- Sunny and a bit warmer Sunday, then clear Sunday night.
- highs 77-89 lows 52-56.
- Sunny and a bit cooler Monday, partly cloudy Monday night,
- Sunny and a bit cooler Tuesday, mostly clear at night,
- Then sunny and a bit cooler Wednesday and Thursday, clear Wednesday night,
- highs 86-83 lows 56-52. (seasonal averages high 78 low 49).
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Forecast for the Umpqua Valley including Roseburg:
- Partly cloudy this afternoon, mostly clear this evening, partly cloudy late tonight,
- Sunny and a bit warmer Saturday, clear at night,
- Sunny and a bit warmer Sunday, then clear Sunday night.
- highs 82-93 lows 59-62. .
- Partly cloudy with a slight (20%) chance of thunderstorms and a bit cooler Monday, partly cloudy with a slight (20%) chance of thunderstorms Monday night,
- Some AM clouds with a slight (20%) chance of thunderstorms, sunny and a bit cooler Tuesday, mostly clear at night,
- Mostly sunny and a bit warmer Wednesday, clear Wednesday night,
- Then sunny and a bit warmer Thursday.
- highs 86-82 warming to warming to 85 Thursday lows 62-55 (seasonal averages high 80 low 54).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy with patchy AM fog, partly cloudy this afternoon, partly cloudy this evening, mostly cloudy with patchy coastal fog tonight while patchy inland fog late tonight,
- Some AM clouds with patchy fog, sunny and a bit warmer Saturday afternoon, mostly clear with patchy fog late at night,
- Patchy AM and late night fog, mostly sunny and a bit warmer Sunday, then mostly clear Sunday night.
- highs 65-69 lows 54-53 warming back to 54 Sunday night.
- Mostly cloudy with patchy AM fog, partly cloudy and a bit cooler with a slight (20%) chance of thunderstorms Monday afternoon and evening, just mostly cloudy late Monday night,
- Partly cloudy and a bit cooler Tuesday, partly cloudy at night,
- Partly cloudy and a bit cooler Wednesday, mostly clear in the evening, becoming partly cloudy and cooler late Wednesday night,
- Some AM clouds, then sunny and a bit warmer Thursday afternoon.
- highs 68-65 warming to 67 Thursday lows 56-58 cooling to 50 Wednesday night.
- (seasonal averages high 65 low 52). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly sunny today, partly cloudy this evening, mostly clear late tonight,
- Sunny and a bit warmer Saturday, clear at night,
- Sunny and warmer Sunday, then mostly clear Sunday night.
- free air freezing level 13,000 ft. today, 14,000 ft. tonight and Saturday, then 15,000 ft. Saturday night through Sunday night.
- highs 67-83 lows 43-54.
- Mostly sunny and a bit warmer with a slight (20%) chance of thunderstorms Monday, mostly cloudy with a (40%) chance of showers and a slight
- (20%) chance of thunderstorms Monday night,
- Mostly sunny and cooler with a slight (20%) chance of thunderstorms Tuesday, partly cloudy in the evening, mostly clear late at night,
- Then sunny Wednesday and Thursday, clear Wednesday night,
- free air freezing level 15,000 ft. Monday, snow level above 8,000 ft Monday night, then free air freezing level 14,000 ft. Tuesday through Thursday.
- highs 84-74 lows 52-47.