Here is my weekly new weather quiz question. What is the “Spring Tide?”
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An Upper Level High Pressure Ridge (“Arch” shape) continues moving eastward as Upper Level Low Pressure (“U” shape) takes over. The graphics for days 1-3 show no frontal systems sliding through Oregon through the period until a cold front slides in by this morning. The graphics for days 3-7 Thursday through Monday show no frontal systems pushing into the Pacific Northwest through the period.
ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT FROM 11 AM UNTIL 8 PM TODAY FOR STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY 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 FROM 9 AM MDT TODAY UNTIL MIDNIGHT MDT TONIGHT FOR LIGHTNING FOR THE BURNS BLM AND THE VALE BLM.
- A RED FLAG WARNING IS IN EFFECT FROM 9 AM MDT TODAY UNTIL 8 PM MDT TONIGHT FOR LIGHTNING, WINDS AND LOW RELATIVE HUMIDITY FOR THE BURNS BLM AND THE VALE BLM.
- A RED FLAG WARNING IS IN EFFECT FROM 9 AM MDT TODAY UNTIL MIDNIGHT MDT TONIGHT FOR LIGHTNING FOR THE BAKER VALLEY.
- A RED FLAG WARNING IS IN EFFECT FROM 9 AM MDT TODAY UNTIL 9 PM MDT TONIGHT FOR LIGHTNING FOR THE BAKER 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.
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Mostly sunny and cooler today (Labor Day), partly cloudy tonight,
- Sunny and a bit warmer Tuesday, clear at night,
- Sunny and warmer Wednesday, then mostly clear Wednesday night.
- highs 74-95 lows 52-56.
- Sunny and a bit warmer Thursday, mostly clear Thursday night,
- Sunny and a bit cooler Friday, mostly clear Friday night,
- Then sunny and a bit cooler Saturday and Sunday, mostly clear Saturday night.
- highs 97-89 lows near 56. (seasonal averages high 82 low 50)
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Your Saturday College Football Weather Forecast:
Saturday August 31st:
Ducks vs Idaho Vandals at Autzen Stadium, Game time 4:30 pm- Ducks won 24-14.
Beavers vs Idaho State Bengals at Reser Stadium, Game time: 3:30 pm-Beavers won 38-15.
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Forecast for the Umpqua Valley including Roseburg:
- Some AM clouds with a slight (20%) chance of thunderstorms, mostly sunny and cooler this afternoon (Labor Day) with a slight (20%) chance of thunderstorms, mostly clear this evening, partly cloudy with patchy fog late tonight,
- Some AM clouds, sunny and warmer Tuesday afternoon, clear at night,
- Sunny and warmer Wednesday, then mostly clear Wednesday night.
- highs 79-97 lows 56-62.
- Mostly sunny and a bit warmer Thursday, mostly clear Thursday night,
- Mostly sunny and a bit cooler Friday, mostly clear Friday night,
- Then mostly sunny and a bit cooler Saturday and Sunday, mostly clear Sunday night.
- highs 99-90 lows 62-59. (seasonal averages high 84 low 55)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with a slight (20%) chance of AM coastal thunderstorms, partly cloudy and a bit warmer this afternoon (Labor Day), mostly cloudy tonight,
- Some AM clouds, sunny and a bit warmer Tuesday afternoon, mostly clear at night,
- Mostly sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
- highs 66-75 lows 54-56.
- Partly cloudy and a bit cooler Thursday and Friday, partly cloudy both nights,
- Partly cloudy Saturday and Saturday night,
- Then partly cloudy and a bit cooler Sunday.
- highs 79-74 lows 56-54. (seasonal average high 67 low 53)
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Sunny and cooler today (Labor Day) with a slight (20%) chance of afternoon showers, partly cloudy tonight,
- Sunny and a bit warmer Tuesday, mostly clear at night,
- Sunny and warmer Wednesday, then mostly clear Wednesday night.
- snow level above 8,000 ft. today, free air freezing level 12,000 ft. rising to 13,000 ft. tonight, 13,000 ft. rising to 14,000 ft. Tuesday afternoon, then 16,000 ft. Tuesday night through Wednesday night.
- highs 69-82 lows 42-52.
- Sunny and a bit warmer Thursday, mostly clear in the evening, partly cloudy late Thursday night,
- Sunny and a bit cooler Friday, partly cloudy Friday night,
- Then sunny and a bit cooler Saturday and Sunday, partly cloudy Sunday night.
- free air freezing level 15,000 ft. Thursday through Saturday night, then 14,000 ft. Sunday.
- highs 84-77 lows 54-52.