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 Low Pressure Trough (Shaded “U” shape with blue arrows) has brought us cooler temperatures and helped to clear out the dense smoke. The trough will move past Oregon today allowing a little warming. An Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) will take over again starting another warming trend and allowing wildfire smoke to infiltrate the area again. The graphics for days 1-3 show a cold front falling apart as it moves through.  The graphics for days 3-7 show a frontal system waffling as it attempts to move through the Pacific Northwest.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 43 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 75 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 42 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

• A RED FLAG WARNING IS IN EFFECT FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FROM 1 PM UNTIL 9 PM FRIDAY FOR THE ENTIRE WILLAMETTE VALLEY.
• A RED FLAG WARNING IS IN EFFECT FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FROM 8 PM TONIGHT UNTIL 9 AM FRIDAY FOR THE UMPQUA NATIONAL FOREST, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THEN THE WESTERN KLAMATH NATIONAL FOREST.
• A FIRE WEATHER WATCH IS IN EFFECT FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FROM NOON TODAY THROUGH 9 AM FRIDAY FOR THE SOUTHERN OREGON COAST, THE WESTERN ROGUE RIVER, AND THE SISKIYOU NATIONAL FOREST.
• AN EXCESSIVE HEAT WATCH IS IN EFFECT FROM FRIDAY AFTERNOON THROUGH MONDAY 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 OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, AND THE UPPER HOOD RIVER VALLEY.
• AN EXCESSIVE HEAT WATCH IS IN EFFECT FROM FRIDAY MORNING THROUGH SUNDAY EVENING FOR THE SOUTH CENTRAL OREGON COAST, 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, AND THE SISKIYOU MOUNTAINS.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL FURTHER NOTICE 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.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON FRIDAY FOR CROOK COUNTY, DESCHUTES COUNTY, AND JEFFERSON 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 – Sunny 99 and cooling as the sun sets and the game progresses.

Beavers vs Portland State, at Reser Stadium – Kickoff: 11:00 AM PDT- Sunny 75 and warming to near 95 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:

• Mostly sunny and a bit warmer this afternoon, clear tonight,
• Sunny and hot with patchy smoke Friday, clear with patchy smoke at night,
• Sunny and Hotter with more smoke Saturday, then clear with patchy smoke Saturday night.
• highs 86-99 lows 53-59.
• Mostly sunny and Hot with smoke Sunday and Monday (Labor Day), mostly clear with smoke at night,
• Sunny and Hot with patchy smoke Tuesday, clear with patchy smoke Tuesday night,
• Then sunny with more smoke and a bit cooler, but still Hot Wednesday.
• highs 99-94 lows near 58. (seasonal averages high 81 low 50)

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Forecast for Roseburg:

• Sunny with patchy smoke and a bit warmer this afternoon, clear with patchy smoke this evening, areas of smoke late tonight,
• Sunny with areas of smoke and a bit warmer Friday, clear with patchy evening smoke, areas of smoke late Friday night,
• Areas of AM smoke, sunny and Hot with patchy smoke  Saturday afternoon, clear with patchy evening smoke, areas of smoke late at night.
• highs 89-104 lows 57-60.
• Sunny with areas of AM smoke, sunny and Hot with patchy smoke Sunday afternoon, mostly clear and cooler with patchy smoke Sunday night,
• Sunny and a bit cooler with patchy smoke Monday (Labor Day) with a slight (20%) chance of afternoon thunderstorms, partly cloudy with a slight (20%) chance of thunderstorms Monday night through Tuesday night,
• Partly cloudy with patchy smoke and a slight (20%) chance of thunderstorms Wednesday afternoon,
• highs 102-98 lows near 62. (seasonal averages high 83 low 54)

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

• Sunny and a bit warmer with patchy smoke this afternoon, mostly clear with patchy smoke tonight,
• Patchy AM coastal smoke, sunny and a bit warmer with patchy smoke Friday afternoon, clear with patchy smoke late at night,
• Sunny with patchy smoke Saturday, then mostly clear with patchy smoke Saturday night.
• highs 67-72 lows 52-54.
• Mostly sunny with patchy smoke Sunday, mostly clear at night,
• Mostly sunny and a bit cooler Monday (Labor Day), mostly clear Monday night,
• Partly cloudy Tuesday and at night,
• Then partly cloudy with a slight (20%) chance of thunderstorms Wednesday afternoon.
• highs 72-66 lows 54-56. (seasonal averages high 66 low 52)

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Forecast for the Cascades in Lane County:

• Mostly sunny and a bit warmer with smoke this afternoon, clear with smoke tonight,
• Sunny and Hot with areas of smoke and a bit warmer Friday and Saturday, clear with areas of smoke both nights,
• free air freezing level above 12,000 ft. this afternoon through Saturday night.
• highs 76-90 lows 52-58.
• Mostly sunny with smoke Sunday AM, partly cloudy and very warm with smoke Sunday afternoon, partly cloudy with areas of smoke at night,
• Partly cloudy and a bit cooler with more smoke and a slight (20%) chance of showers and thunderstorms Monday afternoon (Labor Day) and evening, partly cloudy with areas of smoke Monday night,
• Partly cloudy and a bit cooler with areas of smoke and a slight (20%) chance of showers and thunderstorms Tuesday afternoon and evening, just partly cloudy with smoke at night,
• Then partly cloudy with smoke and a slight (20%) chance of showers and thunderstorms Wednesday afternoon.
• free air freezing level above 12,000 ft. Sunday through Wednesday.
• highs 89-84 lows 56-58.

 

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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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