Here is my weekly weather quiz question. “What is the “Santa Ana Wind?
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An Upper Level High Pressure Ridge (“Arch” shape) brings the heat. The graphics for days 1-3 show a frontal system approaching the coast Saturday. The graphics for days 3-7 Monday through Friday show no frontal systems pushing through the Pacific Northwest until a cold front moves through between Saturday night and Sunday. Another cold front pushes in between Wednesday night and next Thursday.
ADVISORIES:
- NONE AT THIS TIME.
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:
- Sunny and a bit warmer today, mostly clear tonight,
- Sunny and a bit cooler Saturday, mostly clear in the evening, partly cloudy late at night,
- AM clouds, mostly sunny and cooler Sunday, then mostly clear Sunday night.
- highs 89-78 lows 52-54 cooling to 47 Sunday night.
- Sunny and a bit warmer Monday, clear Monday night,
- Sunny and a bit warmer Tuesday, mostly clear at night,
- Sunny and a bit cooler Wednesday, partly cloudy with a slight (20%) chance of showers Wednesday night,
- Then a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Thursday.
- highs 80-83 cooling to 72 Thursday lows 48-52 (seasonal averages high 76 low 48)
Forecast for the Umpqua Valley including Roseburg:
- Some AM clouds, sunny and a bit warmer this afternoon, mostly clear tonight,
- Sunny and a bit cooler Saturday, clear in the evening, partly cloudy late late at night,
- AM clouds, sunny and a bit cooler Sunday afternoon, then clear Sunday night.
- highs 92-82 lows 56-58 cooling to 52 Sunday night.
- Sunny and a bit warmer Monday and Tuesday, clear both nights,
- Sunny and a bit cooler Wednesday, mostly clear in the evening, partly cloudy late Wednesday night,
- Then partly cloudy and a bit cooler with a slight (20%) chance of showers Thursday.
- highs 83-86 cooling to 74 Thursday lows near 54. (seasonal average high 78 low 53)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- AM clouds with patchy inland fog, sunny and a bit warmer this afternoon, mostly clear this evening, partly cloudy with patchy fog late tonight,
- Some AM clouds with patchy fog, sunny Saturday afternoon, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of drizzle late at night,
- AM clouds with a slight (20%) chance of drizzle, sunny and a bit cooler Sunday afternoon, then mostly clear Sunday night.
- highs 69-67 lows 48-52 cooling to 47 Sunday night.
- Mostly sunny and a bit warmer Monday, mostly clear Monday night,
- Mostly sunny Tuesday, mostly clear at night,
- Partly cloudy Wednesday, partly cloudy Wednesday night,
- Partly cloudy with a slight (20%) chance of AM showers, then just partly cloudy and a bit cooler Thursday afternoon.
- highs 68-66 lows 48-50. (seasonal average high 64 low 52)
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly clear tonight,
- Sunny and a bit warmer Friday, mostly clear Friday night,
- Sunny Saturday, clear at night,
- Sunny and a bit cooler Sunday, then mostly clear Sunday night.
- free air freezing level 13,000 ft. tonight and Friday, 14,000 ft. rising to 15,000 ft. late Friday night, then 15,000 ft. Saturday through Sunday night.
- highs 76-69 lows 49-42.
- Sunny and a bit warmer Monday, clear Monday night,
- Sunny Tuesday, mostly clear at night,
- Sunny and a bit cooler Wednesday, partly cloudy with a slight (20%) chance of showers with patchy freezing drizzle Wednesday night,
- Then mostly cloudy and cooler with a slight (20%) chance of showers and patchy freezing drizzle Thursday.
- free air freezing level 14,000 ft. Monday, 15,000 ft. Monday night, 14,000 ft. Tuesday and Tuesday night, 13,000 ft. Wednesday, then snow level above 8,000 ft. Wednesday night and Thursday.
- highs 73-56 lows 45-42.