An Upper Level High Pressure Ridge (“Arch”shape) takes over as the weak cold front leaves Oregon. The graphics for days 1-3 show a dry cold front moving through the Pacific Northwest today. The graphics for days 3-7 Saturday through Wednesday show a cold frontal system will be to our northwest then pushing through next Monday.
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- A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING UNTIL 11 PM TONIGHT FOR THE CENTRAL MOUNTAINS OF OREGON AND THE SOUTHERN DESCHUTES NATIONAL FOREST.
- A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING ON DRY FUELS UNTIL 9 PM TONIGHT FOR THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES..
- A RED FLAG WARNING IS IN EFFECT FOR ABUNDANT LIGHTNING UNTIL 11 PM TONIGHT FOR THE JOHN DAY VALLEY, THE CENTRAL MOUNTAINS OF OREGON, AND THE SOUTHERN DESCHUTES NATIONAL FOREST.
- A RED FLAG WARNING IS IN EFFECT FOR WIND AND LOW RELATIVE HUMIDITY UNTIL 10 PM TONIGHT FOR THE LOWER COLUMBIA BASIN OF OREGON.
- A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR ABUNDANT LIGHTNING FOR THE SOUTHERN BLUE MOUNTAINS OF OREGON.
- A RED FLAG WARNING IS IN EFFECT FOR LIGHTNING THROUGH 11 PM TONIGHT FOR THE BURNS BLM, THE SOUTHERN GRASSLANDS, CENTRAL CANYONLANDS, AND THE NORTHWESTERN VALE BLM.
- AN EXTREME HEAT WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH MONDAY EVENING FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM TONIGHT FOR THE LOWER COLUMBIA BASIN OF OREGON.
- A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM MDT TONIGHT FOR THE OREGON LOWER TREASURE VALLEY.
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 clear this evening, partly cloudy late tonight,
- Sunny and a bit cooler Thursday, mostly clear Thursday night,
- Then sunny and a bit warmer Friday and Saturday, clear both nights,
- lows 58-55 warming to 59 Saturday night highs 85-92.
- Sunny Sunday, clear Sunday night,
- Sunny and a bit cooler Monday, clear at night,
- Sunny and a bit warmer Tuesday, clear Tuesday night,
- Then sunny Wednesday.
- highs 95-92 warming to 96 Tuesday and Wednesday lows 59-56 warming back to 59 Tuesday night. (seasonal averages high 83 low 51).
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Forecast for the Umpqua Valley including Roseburg:
- Mostly clear this evening, becoming mostly cloudy late tonight,
- AM clouds, sunny and a bit warmer Thursday afternoon, mostly clear Thursday night,
- Then sunny and a bit warmer Friday and Saturday, clear both nights.
- lows 62-64 highs 87-95. .
- Sunny and a bit warmer Sunday, clear Sunday night,
- Sunny and a bit cooler Monday, clear at night,
- Sunny and a bit warmer Tuesday, clear Tuesday night,
- Then sunny Wednesday.
- highs 96-95 warming to 97 Tuesday and Wednesday lows 65-60 warming to 64 Tuesday night (seasonal averages high 85 low 57).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear this evening, mostly cloudy with patchy coastal fog while patchy late evening inland fog tonight and areas of fog late tonight,
- AM clouds and patchy fog, sunny and a bit warmer Thursday afternoon, partly cloudy in the evening, mostly cloudy with patchy inland fog late Thursday night,
- Some AM clouds with patchy fog, sunny Friday, mostly clear in the evening, partly cloudy with patchy fog late at night,
- Some AM clouds with patchy fog, sunny and a bit warmer Saturday afternoon, then mostly clear Saturday night.
- lows 55-53 warming back to 55 Saturday night highs 72-73.
- Mostly sunny Sunday, mostly clear Sunday night,
- Mostly sunny and a bit cooler Monday, mostly clear at night,
- Mostly sunny and a bit warmer Tuesday, mostly clear Tuesday night,
- Then mostly sunny and a bit cooler Wednesday.
- highs 72-73 cooling back to 73 Wednesday lows 54-52 warming back to 54 Tuesday night.
- (seasonal averages high 66 low 53). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly clear this evening, partly cloudy late tonight,
- Mostly sunny and a bit cooler Thursday, mostly clear Thursday night,
- Then sunny and a bit warmer Friday and Saturday, clear both nights,
- free air freezing level 14,000 ft. rising to 15,000 ft. tonight, 15,000 ft. Thursday and Thursday night, 15,000 ft. rising to 16,000 ft. Friday afternoon, then 16,000 ft. Friday night through Saturday night.
- lows 47-54 highs 73-83.
- Sunny and a bit warmer Sunday, clear Sunday night,
- Sunny and a bit cooler Monday, clear at night,
- Then sunny and a bit warmer Tuesday and Wednesday, clear Tuesday night.
- highs 85-84 warming to 88 Wednesday lows 54-52 warming to 56 Tuesday night.
- free air freezing level 16,000 ft. Sunday and Sunday night, above 16,000 ft. Monday through Tuesday night, then 16,000 ft. Wednesday.
- highs 82-83 lows 52-53.