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 moving away which will allows an Upper Level Low Pressure Trough combined with a surface thermal low to our east is bringing us cooler temperatures and helping to clear out the dense smoke. Over the weekend high pressure will take over again starting another warming trend. The graphics for days 1-3 show a cold front falling apart as it approaches Oregon late today through Thursday.  The graphics for days 3-7 show that 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 20 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 131 in the Unhealthy for Sensitive Groups category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 24 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 2 PM THIS AFTERNOON UNTIL 9 PM THIS EVENING FOR THE LOWER COLUMBIA BASIN OF OREGON.
• A RED FLAG WARNING IS IN EFFECT FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FROM 1 PM THIS AFTERNOON UNTIL 7 PM THIS EVENING 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 FIRE WEATHER WATCH IS IN EFFECT FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FROM THURSDAY EVENING THROUGH FRIDAY MORNING FOR THE SOUTHERN OREGON COAST, THE WESTERN ROGUE RIVER, AND THE SISKIYOU NATIONAL FOREST.
• 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 95 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 92 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:

• A mix of clouds and sun and a bit cooler this afternoon, partly cloudy tonight,
• AM clouds, mostly sunny and a bit warmer Thursday, clear Thursday night,
• Sunny and hot with patchy smoke Friday, clear with patchy smoke at night.
• highs 79-95 lows 55-57.
• Sunny and Hotter with patchy smoke Saturday, clear with patchy smoke Saturday night,
• Sunny and Hot Sunday and Monday (Labor Day), mostly clear Sunday night, clear Monday night,
• Then sunny and Hot Tuesday.
• highs 96-94 lows near 58. (seasonal averages high 81 low 50)

 

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Forecast for Roseburg:

• Sunny and a bit cooler today with areas of afternoon smoke, mostly clear with areas of evening smoke, patchy smoke late tonight,
• Mostly sunny with patchy smoke and a bit warmer Thursday, mostly clear with patchy smoke at night,
• Sunny with more patchy smoke and a bit warmer Friday, clear with patchy evening smoke, areas of smoke Friday night.
• highs 82-98 lows near 56.
• Sunny with patchy smoke and Hot Saturday, clear with patchy evening smoke, areas of smoke  at night,
• Mostly sunny with patchy smoke and Hot Sunday afternoon, mostly clear and cooler with patchy smoke Sunday night,
• Partly cloudy and a bit cooler with patchy smoke Monday and at night,
• Partly cloudy Tuesday with patchy smoke and a slight (20%) chance of thunderstorms in the afternoon.
• highs 101-96 warming back to 101 Tuesday lows 62-60. (seasonal averages high 83 low 54)

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

• Mostly sunny and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy late tonight with patchy inland smoke,
• Mostly cloudy in the AM, partly cloudy and a bit warmer with patchy inland smoke Thursday afternoon, mostly clear with patchy coastal smoke late at night while patchy inland smoke Thursday night,
• Patchy AM smoke, sunny and a bit warmer with patchy smoke Friday, then clear with patchy smoke at night.
• highs 67-72 lows 55-52.
• Sunny with patchy smoke Saturday, clear with patchy smoke Saturday night,
• Patchy AM smoke, sunny Sunday, mostly clear at night,
• Mostly sunny and a bit cooler Monday (Labor Day), then partly cloudy Monday night and Tuesday.
• highs 72-67 lows 53-55. (seasonal averages high 66 low 52)

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Forecast for the Cascades in Lane County:

• Mostly sunny with areas of smoke and a bit cooler today, mostly clear with areas of smoke tonight,
• Mostly sunny and a bit warmer with areas of smoke Thursday afternoon, mostly clear with areas of smoke at night,
• Sunny and Hot with areas of smoke and a bit warmer Friday, clear with areas of smoke Friday night.
• free air freezing level 14,000 ft. today and tonight, 15,000 ft. rising to 16,000 ft. Thursday, then 16,000 ft. Thursday night through Friday night.
• highs 72-88 lows 47-58.
• Sunny with areas of smoke and a bit warmer Saturday, mostly clear with areas of smoke at night,
• Mostly sunny with areas of smoke Sunday AM, partly cloudy and very warm with areas of smoke Sunday afternoon, partly cloudy with areas of smoke at night,
• Partly cloudy with areas of smoke Monday (Labor Day) and Monday night,
• Then partly cloudy with areas of smoke Tuesday.
• free air freezing level 16,000 ft. Saturday through Tuesday.
• highs 88-84 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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