Here is my weekly weather quiz question. What is “The Bermuda High?” The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

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An  Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) is heating us up to uncomfortable levels. There will be some cooling Tuesday due to an Upper Level Low Pressure Trough that will follow the high by Tuesday. The graphics for days 3-7 show a frontal system moving through the Pacific Northwest Thursday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 190 in the Unhealthy for Sensitive Groups category measuring Particulate Matter.

Oakridge: The Air Quality Index is 204 in the Very Unhealthy category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 188 in the Unhealthy category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

• A HEAT ADVISORY IS IN EFFECT THROUGH 8 PM THIS EVENING FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE LOWER COLUMBIA, THE GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY, THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE, THE NORTHERN CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, AND THE UPPER HOOD RIVER VALLEY.
• A HEAT ADVISORY IS IN EFFECT UNTIL MIDNIGHT TONIGHT FOR CENTRAL DOUGLAS COUNTY, EASTERN CURTRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
• A RED FLAG WARNING IS IN EFFECT UNTIL 8 PM TONIGHT FOR DRY AND WINDY CONDITIONS FOR THE ENTIRE WILLAMETTE VALLEY, THE NORTHERN OREGON  CASCADE FOOTHILLS, THE CENTRAL OREGON CASCADE FOOTHILLS, THE MT. HOOD NATIONAL FOREST WEST OF CASCADE CREST, AND THE WILLAMETTE NATIONAL FOREST.
• A RED FLAG WARNING IS IN EFFECT UNTIL 7 PM TONIGHT FOR VERY HOT AND UNSTABLE CONDITIONS FOR  THE DESCHUTES NATIONAL FOREST AND THE MINUS SISTERS RANGER DISTRICT.
• A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR THE WESTERN ROGUE RIVER AND THE SISKIYOU NATIONAL FOREST.
• A RED FLAG WARNING IS IN EFFECT FROM 2 PM UNTIL 8 PM TUESDAY FOR GUSTY SOUTHWEST WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST.
• A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM TUESDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
• A FIRE WEATHER WATCH IS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR GUSTY SOUTHWEST WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON TUESDAY FOR DESCHUTES COUNTY.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 5 PM THURSDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, THE CURRY COUNTY COAST, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, NORTHERN KLAMATH COUNTY, EASTERN KLAMATH COUNTY, WESTERN LAKE COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE KLAMATH BASIN.
• The Oregon Health Authority issued a Health Advisory for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake, to include Shoalwater Bay to the north. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Agency Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals.  People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• The Oregon Health Authority updated the Health Advisory issued June 30 for Lake Billy Chinook, located about 12 miles west of Madras in Jefferson County. The update lifts the advisory on those areas of the Deschutes and Crooked River of Lake Billy Chinook arms affected by the advisory, and confines the advisory on the Metolius Arm to Perry South Cove. Water monitoring has confirmed that the level of blue-green algae toxins are below guideline values for human exposure. However, OHA recommends that people remain cautious when using the lake, particularly with pets because toxins are still well above the very low exposure levels established for dogs.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson 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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Your College Football Forecast – Saturday 9/2: 

Ducks vs Southern Utah, at Autzen Stadium – Kickoff: 5:15 PM PDT – Mostly sunny 92 and cooling as the game progresses.

Beavers vs Portland State, at Reser Stadium – Kickoff: 11:00 AM PDT- Mostly sunny 70 and warming to near 90 by the end of the game.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Clear with areas of smoke this evening, patchy smoke late tonight,
• Patchy AM smoke, sunny and cooler Tuesday afternoon, mostly clear Tuesday night,
• Mostly sunny and a bit cooler Wednesday, mostly clear at night,
• Mostly sunny and a bit warmer Thursday,  mostly clear Thursday night.
• lows 57-53 warming to 55 Thursday night highs 86-82 warming to 85 Thursday.
• Mostly sunny and warmer Friday and Saturday, clear Friday night, mostly clear Saturday night,
• Sunny and hot Sunday and Monday (Labor Day), mostly clear Sunday night,
• highs 92-94 lows near 57. (seasonal averages high 81 low 50)

 

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Forecast for Roseburg:

• Clear with patchy smoke tonight,
• Sunny and cooler with patchy smoke Tuesday, mostly clear with patchy smoke at night,
• Mostly cloudy with patchy AM smoke, sunny and a bit cooler Wednesday with areas of afternoon smoke, clear with areas of evening smoke, patchy smoke late Wednesday night,
• Mostly sunny with patchy smoke and a bit warmer Thursday, mostly clear with patchy smoke at night.
• lows 62-56 warming to 58 Thursday night highs 92-84 warming to 90 Thursday.
• Sunny with patchy smoke and a bit warmer Friday, clear with patchy evening smoke, areas of smoke Friday night,
• Sunny with patchy smoke and a bit warmer (Hot) Saturday afternoon, mostly clear with patchy evening smoke, areas of smoke  at night,
• Mostly sunny with patchy smoke and Hot Sunday afternoon, mostly clear with patchy smoke Sunday night,
• Then mostly sunny and a bit cooler with patchy smoke Monday.
• highs 87-100 cooling to 96 Monday lows 59-62. (seasonal averages high 83 low 54)

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Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly clear with areas of smoke this evening, partly cloudy with areas of coastal fog and patchy smoke late tonight while partly cloudy with areas of  inland smoke tonight,
• Mostly cloudy with areas of coastal fog and patchy smoke Tuesday AM and sunny and a bit cooler with areas of smoke in the afternoon while sunny and a bit cooler with areas of inland smoke in the afternoon, mostly clear with areas of evening coastal smoke and partly cloudy with patchy fog and smoke late Tuesday night while partly cloudy with inland areas of smoke Tuesday night,
• Partly cloudy with patchy AM fog and smoke and sunny and a bit warmer with areas of smoke and a bit warmer Wednesday afternoon while sunny and a bit warmer with areas of afternoon smoke inland, mostly clear with areas of smoke Wednesday night,
• Patchy AM smoke, mostly sunny and a bit warmer with areas of smoke in Thursday afternoon, then mostly clear Thursday night.
• lows near 55 highs 62-68.
• Patchy AM smoke, mostly sunny and a bit warmer with areas of smoke Friday and Saturday, mostly clear with areas of smoke both nights,
• Mostly sunny Sunday, areas of smoke at night,
• Sunny in the AM, partly cloudy and a bit cooler Monday afternoon (Labor Day).
• highs 70-72 cooling to 67 Monday lows near 55. (seasonal averages high 66 low 52)

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Forecast for the Cascades in Lane County:

• Clear with areas of smoke tonight,
• Sunny and a bit cooler with areas of smoke Tuesday, clear and cooler at night,
• Mostly sunny with areas of smoke and a bit cooler Wednesday, clear with areas of smoke Wednesday night,
• Mostly sunny with areas of smoke and a bit warmer Thursday, then mostly clear with areas of smoke at night.
• free air freezing level above 12,000 ft. tonight through Thursday night.
• lows 57-48 warming to 52 Thursday night highs 80-72 warming to 75 Thursday.
• Sunny with areas of smoke and a bit warmer Friday and Saturday, clear with areas of smoke both nights,
• Mostly sunny with areas of smoke Sunday AM, then partly cloudy and very warm with areas of smoke Sunday afternoon through Monday (Labor Day).
• free air freezing level above 12,000 ft. Friday through Monday.
• highs 84-86 cooling back to 84 Sunday and Monday lows 55-53.

 

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

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Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

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