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) will take over again starting another warming trend and allowing wildfire smoke to infiltrate the area again. The graphics for days 1-3 show the cold front that moved through. The graphics for days 3-7 show a frontal system waffling as it attempts to move through the Pacific Northwest and yet another front approaching from the northwest next Thursday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 40 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 127 in the Unhealthy for Sensitive Groups category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 37 in the Good category measuring Ozone.

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 RED FLAG WARNING IS IN EFFECT FOR VERY DRY AND UNSTABLE CONDITIONS FROM 1 PM UNTIL 8 PM FRIDAY FOR THE UMPQUA BASIN.
• A FIRE WEATHER WATCH IS IN EFFECT FOR STRONG WINDS AND LOW RELATIVE HUMIDITY THROUGH 9 AM FRIDAY FOR THE SOUTHERN OREGON COAST, THE WESTERN ROGUE RIVER, AND THE SISKIYOU NATIONAL FOREST.
• A FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY MORNING THROUGH MONDAY EVENING FOR HOT, DRY AND UNSTABLE CONDITIONS FOR THE ENTIRE WILLAMETTE VALLEY.
• A FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY MORNING THROUGH MONDAY EVENING FOR VERY HOT, DRY, UNSTABLE CONDITIONS FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL  COAST RANGE OF WESTERN OREGON,  THE NORTHERN OREGON CASCADE FOOTHILLS, THE CENTRAL OREGON CASCADE FOOTHILLS, MT. HOOD NATIONAL FOREST WEST OF CASCADE CREST,  AND THE WILLAMETTE NATIONAL FOREST.
• A FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR VERY HOT, DRY, UNSTABLE CONDITIONS FOR THE DDSCHUTES NATIONAL FOREST, THE MINUS SISTERS RANGER DISTRICT, THE CENTRAL MOUNTAINS OF OREGON, THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, THE UMPQUA NATIONAL FOREST, AND THE SOUTHERN OREGON CASCADES.
• AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM 11 AM FRIDAY THROUGH 11 PM MONDAY 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.
• A HEAT ADVISORY IS IN EFFECT FROM 2 PM SATURDAY UNTIL 10 PM TUESDAY FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• A HEAT ADVISORY IS IN EFFECT FROM 2 PM SATURDAY UNTIL 10 PM TUESDAY 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 NORTHERN OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, THE UPPER HOOD RIVER VALLEY, THE WESTERN COLUMBIA RIVER GORGE, AND THE CENTRAL COLUMBIA RIVER GORGE.
• 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.
• 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 98 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:

• Clear tonight,
• Sunny and hot with patchy smoke Friday, clear with patchy smoke at night,
• Sunny and Hotter with more smoke Saturday, clear with smoke Saturday night,
• Mostly sunny and Hot with smoke Sunday, clear with smoke at night.
• lows 54-60 highs 94-98.
• AM sun, partly cloudy and Hot with smoke Monday (Labor Day) and Tuesday, partly cloudy with smoke both nights,
• Partly cloudy with more smoke and a bit cooler with a slight (20%) chance of showers and thunderstorms Wednesday through Thursday AM, then just partly cloudy with smoke Thursday afternoon.
• highs 97-90 lows 60-58. (seasonal averages high 81 low 50)

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Forecast for Roseburg:

• 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, clear with areas of smoke late at night,
• Sunny with areas of AM smoke, sunny and Hot with patchy smoke Sunday afternoon, mostly clear with patchy evening smoke, partly cloudy and cooler with patchy smoke late Sunday night.
• lows 57-60 cooling to 59 Sunday night highs 100-107 cooling to 104 Sunday.
• Partly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of thunderstorms Monday (Labor Day) and Monday night,
• Partly cloudy with patchy AM smoke, mostly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of thunderstorms Tuesday afternoon and evening, mostly cloudy with patchy smoke late at night,
• Partly cloudy with patchy smoke and a slight (20%) chance of thunderstorms Wednesday through Thursday (a bit cooler).
• highs 101-94 lows 62-64. (seasonal averages high 83 low 54)

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

• Patchy smoke and mostly clear this evening and partly cloudy late tonight, breezy (Wind: N 15-25 mph decreasing to N 10-15 mph late tonight at the shore while N 15 mph inland shifting to NE 5-10 mph late tonight),
• Patchy AM coastal smoke otherwise sunny and a bit warmer Friday afternoon while sunny with patchy smoke inland Friday, clear with patchy smoke late at night,
• Sunny and a bit warmer with patchy smoke Saturday, clear with patchy smoke at the shore at night while patchy evening inland smoke and areas of inland smoke late Saturday night,
• Patchy AM smoke, sunny and a bit cooler Sunday, mostly clear in the evening, then partly cloudy late at night.
• lows 52-54 highs 73-75 cooling back to 73 Sunday.
• Partly cloudy Monday (Labor Day) and Monday night,
• Partly cloudy Tuesday AM, mostly cloudy and a bit cooler in the afternoon and evening, then partly cloudy Tuesday night through Thursday.
• highs 73-66 warming back to 72 Thursday lows 55-58. (seasonal averages high 66 low 52)

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Forecast for the Cascades in Lane County:

• Clear with smoke tonight,
• Sunny with AM smoke, sunny and Hot with areas of smoke and a bit warmer Friday afternoon, clear with areas of evening smoke, clear with smoke late Friday night,
• Sunny and Very Hot with smoke Saturday, clear with smoke at night,
• Mostly sunny with smoke Sunday AM, partly cloudy and very warm but a bit cooler with smoke Sunday afternoon, partly cloudy with smoke Sunday night.
• free air freezing level above 12,000 ft. tonight through Sunday night.
• lows 53-60 cooling to 56 Sunday night highs 87-89 cooling to 85 Sunday.
• Partly cloudy and a bit cooler with more smoke Monday,  partly cloudy with 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, mostly cloudy with smoke and a slight (20%) chance of showers and thunderstorms at night,
• Then a mix of clouds and sun with smoke and a slight (20%) chance of showers and thunderstorms and a bit cooler Wednesday and Thursday, partly cloudy with a slight (20%) chance of showers and thunderstorms Wednesday night.
• free air freezing level above 12,000 ft. Monday through Thursday.
• highs 86-78 lows 59-55.

 

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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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