Sep
04.
Here is my weekly weather quiz question. What is the “Spring Tide?”
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An Upper Level High Pressure Ridge (“Arch” shape) will be following closely behind the Upper Level Low Pressure Trough (“U” shape) that’s moved away from us. The graphics for days 1-3 show no frontal activity through the period. The graphics for days 3-7 Saturday through Wednesday show a cold front falling apart as t hits the coast Saturday, then a frontal system will be moving through the coast then inland next Monday and Tuesday.
Note: Again the high temperature today in Eugene didn’t reach the forecast high of 95 due to some clouds and a thick smoky haze which covered the sky over the South Willamette Valley.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 62 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 141 in the Unhealthy for Sensitive Groups category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 68 in the Moderate category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT FROM 11 PM TONIGHT UNTIL 11 PM THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE WESTERN COLUMBIA GORGE IN OREGON.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM NOON THURSDAY UNTIL 10 PM FRIDAY FOR THE LOWER COLUMBIA RIVER, TUALATIN VALLEY, PORTLAND WEST HILLS AND CHEHALEM MOUNTAIN, INNER PORTLAND METRO, EAST PORTLAND METRO, WEST CENTRAL WILLAMETTE VALLEY, EAST CENTRAL WILLAMETTE VALLEY, BENTON COUNTY LOWLANDS, LINN COUNTY LOWLANDS, LANE COUNTY LOWLANDS, WEST COLUMBIA RIVER GORGE OF OREGON ABOVE 500 FT., THE WEST COLUMBIA RIVER GORGE I-84 CORRIDOR, CLACKAMAS COUNTY CASCADE FOOTHILLS, THE CASCADE FOOTHILLS OF MARION AND LINN COUNTIES, AND THE LANE COUNTY CASCADE FOOTHILLS.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM NOON THURSDAY UNTIL 10 PM FRIDAY FOR THE UPPER HOOD RIVER VALLEY.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM NOON THURSDAY UNTIL 10 PM FRIDAY FOR THE NORTH OREGON CASCADES, THE CASCADES OF MARION AND LINN COUNTIES, AND THE CASCADES OF LANE COUNTY.
- A HEAT ADVISORY IS IN EFFECT FROM NOON THURSDAY UNTIL 10 PM FRIDAY FOR THE NORTH OREGON COAST RANGE LOWLANDS, THE CENTRAL OREGON COAST RANGE LOWLANDS, THE NORTH OREGON COAST RANGE, THE CENTRAL OREGON COAST RANGE, AND UPPER HOOD RIVER VALLEY.
- A HEAT ADVISORY IS IN EFFECT FROM NOON UNTIL 8 PM THURSDAY FOR THE SOUTH CENTRAL OREGON COAST, CENTRAL DOUGLAS COUNTY, THE CENTRAL OREGON COAST, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- A HEAT ADVISORY IS IN EFFECT FROM 1 PM THURSDAY UNTIL 9 PM SATURDAY FOR EASTERN COLUMBIA RIVER GORGE OF OREGON, THE LOWER COLUMBIA BASIN OF OREGON, THE GRANDE RONDE VALLEY, THE NORTHERN BLUE MOUNTAINS OF OREGON, THE JOHN DAY BASIN, THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, THE EAST SLOPES OF THE OREGON CASCADES, NORTH CENTRAL OREGON, AND CENTRAL OREGON.
- A HEAT ADVISORY IS IN EFFECT FROM 1 PM UNTIL 8 PM FRIDAY FOR THE SOUTHERN BLUE MOUNTAINS OF OREGON, THE OCHOCO, AND THE JOHN DAY HIGHLANDS.
- A FIRE WEATHER WATCH IS IN EFFECT FROM THIS AFTERNOON THROUGH THURSDAY AFTERNOON FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MT. HOOD FOREST REGION, THE NORTHERN WILLAMETTE FOREST, THE SOUTHERN WILLAMETTE FOREST, AND THE GIFFORD PINCHOT NATIONAL FOREST.
- A FIRE WEATHER WATCH IS IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING FOR THE NORTHERN AND CENTRAL WILLAMETTE VALLEY AND THE NORTHERN OREGON CASCADE FOOTHILLS.
- AN AIR QUALITY ALERT IS IN EFFECT IS IN EFFECT UNTIL 5 PM FRIDAY FOR JACKSON, KLAMATH AND LAKE COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 2 PM FRIDAY FOR COOK, DESCHUTES, AND GRANT COUNTIES.
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:
- Clear tonight,
- Sunny and and hazy and warmer (Hot) Thursday, mostly clear and hazy Thursday night,
- AM haze, sunny and a bit cooler Friday, partly cloudy at night,
- Mostly sunny and a bit cooler Saturday, then mostly clear Saturday night.
- lows 57-59 cooling to 56 Saturday night highs 102-97 cooling to 92 Saturday.
- Sunny and a bit cooler Sunday, mostly clear in the evening, partly cloudy Sunday night,
- A mix of clouds and sun and a bit cooler Monday, partly cloudy in the evening, mostly cloudy late at night,
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Tuesday, mostly cloudy with a (40%) chance of showers Tuesday night,
- Then a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Wednesday.
- highs 87-76 lows 55-53. (seasonal averages high 81 low 50)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: LOW (2)
TREES: LOW (2)
WEEDS: LOW (2)
Last Measured 8.31.24
Data courtesy of Oregon Allergy Associates.
The local pollen season is over.
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Your Saturday College Football Weather Forecast:
Saturday September 7th:
Ducks vs Boise State Broncos at Autzen Stadium, Game time 7:00 pm- Weather forecast: Partly cloudy 84 degrees cooling to 69 degrees by the end of the game.
Beavers vs San Diego State Aztecs at Snapdragon Stadium, San Diego, California, Game time: 7:30 pm- Weather forecast: Partly cloudy 80 degrees cooling to 77 degrees by the the end of the game.
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Forecast for the Umpqua Valley including Roseburg:
- Mostly clear with patchy evening smoke and haze, patchy smoke late tonight,
- Sunny and hazy with patchy smoke and a bit warmer (Hot) Thursday afternoon, evening haze, mostly clear late Thursday night,
- Sunny and hazy with patchy AM smoke, sunny and hazy with patchy smoke a bit cooler (still very warm) Friday afternoon with a slight (20%) chance of thunderstorms, partly cloudy with a slight (20%) chance of evening thunderstorms, just partly cloudy late at night,
- AM sun, partly cloudy and a bit cooler Saturday afternoon, then becoming mostly clear Saturday night.
- lows 62-58 highs 104-92.
- Mostly sunny and a bit cooler Sunday, partly cloudy Sunday night,
- Partly cloudy and a bit cooler Monday, partly cloudy at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Tuesday, a (30%) chance of showers Tuesday night,
- Then mostly cloudy and a bit cooler with a good (50%) of showers Wednesday.
- highs 89-77 lows near 57. (seasonal averages high 83 low 55)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear with evening haze, partly cloudy and hazy tonight with patchy inland smoke late tonight,
- Some AM clouds with AM coastal haze and sunny and hazy and a bit warmer Thursday afternoon while partly cloudy and hazy with patchy inland AM smoke and sunny and hazy a bit warmer with inland patchy smoke Thursday afternoon, mostly clear in the evening, partly cloudy late Thursday night,
- AM haze, partly cloudy and a bit cooler Friday, partly cloudy with a slight (20%) chance of evening thunderstorms, mostly cloudy late at night,
- Mostly cloudy and a bit cooler Saturday, then mostly cloudy Saturday night.
- lows 54-58 highs 72-65.
- Mostly cloudy start, sunny and a bit cooler Sunday, mostly cloudy Sunday night,
- Mostly cloudy and a bit cooler Monday, mostly cloudy at night,
- Mostly cloudy with a (30%) chance of showers and a bit cooler Tuesday, mostly cloudy with a (40%) chance of showers Tuesday night,
- Mostly cloudy with a (40%) chance of showers Wednesday.
- highs 65-64 lows near 55. (seasonal average high 67 low 53)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly clear and hazy with areas of smoke tonight,
- Sunny and hazy and a bit warmer Thursday, partly cloudy and hazy Thursday night,
- AM haze, sunny and a bit warmer Friday afternoon, partly cloudy with a slight (20%) chance of showers at night,
- Mostly sunny and a bit cooler Saturday, then mostly cloudy with a slight (20%) chance of showers Saturday night.
- free air freezing level 16,000 ft. tonight, 15,000 ft. Thursday through Friday, snow level above 8,000 ft. Friday night, free air freezing level 14,000 ft. Saturday and Sunday night.
- lows 54-56 cooling to 52 Saturday night highs 85-86 cooling to 80 Saturday.
- Sunny and a bit cooler Sunday, mostly clear in the evening, partly cloudy late Sunday night,
- Mostly sunny and a bit cooler Monday, partly cloudy in the evening, mostly cloudy late at night,
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Tuesday, mostly cloudy with a good (50%) chance of showers Tuesday night,
- Then a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Wednesday.
- free air freezing level 14,000 ft. Sunday, 15,000 ft. Sunday night, 14,000 ft. Monday, 13,000 ft, Monday night, then snow level above 8,000 ft. Tuesday through Wednesday.
- highs 77-59 lows 50-44.