Here is my weekly weather quiz question for the last time. What is “The Bermuda High?” Here is the correct answer. TheBermuda High is a semi-permanent, subtropical area of high pressure in the North Atlantic Ocean off the East Coast of North America that migrates east and west with varying central pressure. Depending on the season, it has different names. When it is displaced westward, during the Northern Hemispheric summer and fall, the center is located in the western North Atlantic, near Bermuda. In the winter and early spring, it is primarily centered near the Azores in the eastern part of the North Atlantic. Also known as Azores High. I’ll have a new weekly weather quiz question for you Monday.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.

________________

 

An Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) has taken over again producing  another warming trend and allowing wildfire smoke to infiltrate the area again. 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 the coast NextSaturday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 74 in the Moderate category measuring Ozone.

Oakridge: The Air Quality Index is 248 in the Very Unhealthy category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 170 in the Unhealthy category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________________

Advisories:

• *A RED FLAG WARNING IS IN EFFECT 10 PM TUESDAY FOR SIGNIFICANTLY DRY AND UNSTABLE CONDITIONS FOR THE EAST SLOPES OF THE CENTRAL OREGON COAST RANGE, THE ENTIRE WILLAMETTE VALLEY, THE CENTRAL OREGON CASCADE FOOTHILLS, AND THE WILLAMETTE NATIONAL FOREST.
• *A RED FLAG WARNING IS IN EFFECT FOR HOT, DRY, AND UNSTABLE CONDITIONS FOR THE NORTH OREGON COAST RANGE, THE NORTH OREGON CASCADE FOOTHILLS, AND THE MT. HOOD NATIONAL FOREST WEST OF CASCADE CREST.
• *A RED FLAG WARNING IS IN EFFECT FOR VERY DRY AND UNSTABLE CONDITIONS  10 PM TUESDAY FOR THE UMPQUA NATIONAL FOREST, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, AND THE FREMONT WINEMA NATIONAL FOREST, THE CENTRAL MOUNTAINS OF OREGON,  THE SISKIYOU MOUNTAINS, AND THE WESTERN KLAMATH NATIONAL FOREST.
• *A RED FLAG WARNING IS IN EFFECT FOR VERY DRY AND UNSTABLE CONDITIONS UNTIL 8 PM TONIGHT FOR THE UMPQUA NATIONAL FOREST, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, AND THE FREMONT-WINEMA NATIONAL FOREST.
• A RED FLAG WARNING IS IN EFFECT FOR VERY HOT, DRY UNSTABLE CONDITIONS UNTIL 10 PM TONIGHT FOR THE DESCHUTES NATIONAL FOREST, THE MINUS SISTERS RANGER DISTRICT, AND THE CENTRAL MOUNTAINS OF OREGON.
• *AN EXCESSIVE HEAT WARNING IS IN EFFECT THROUGH 11 PM MONDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• *A HEAT ADVISORY IS IN EFFECT 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, THE CENTRAL COLUMBIA RIVER GORGE, THE FOOTHILLS OF THE NORTHERN OREGON CASCADES, THE CASCADE FOOTHILLS IN LANE COUNTY, THE NORTHERN OREGON CASCADES, THE CASCADES IN LANE COUNTY, AND THE UPPER HOOD RIVER VALLEY.
• *AN AIR QUALITY ALERT IS IN EFFECT UNTIL 6 PM TUESDAY FOR BENTON COUNTY, CLACKAMAS COUNTY, CLATSOP COUNTY, COLUMBIA COUNTY, HOOD RIVER COUNTY, LANE COUNTY, LINCOLN COUNTY, LINN COUNTY, MARION COUNTY,MULTNOMAH COUNTY, POLK COUNTY, TILLAMOOK COUNTY, WASHINGTON COUNTY, AND WASHINGTON COUNTY.
• *AN AIR QUALITY ALERT IS IN EFFECT UNTIL FURTHER NOTICE FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE KLAMATH BASIN, NORTHERN KLAMATH COUNTY, EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
• *AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON TUESDAY 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 including Shoalwater Bay to the north and now all of Upper Klamath Lake. 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.

________________

Your College Football Forecast:

Ducks vs Southern Utah, at Autzen Stadium – Kickoff: 5:15 PM PDT – Sunny 98 with smoke and cooling as the sun sets and the game progresses, light wind.

Beavers vs Portland State, at Reser Stadium – Kickoff: 11:00 AM PDT- Sunny 75 with smoke and warming to near 95 by the end of the game, light wind.

________________

 

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

• Clear with smoke tonight,
• Sunny and Very Hot with smoke Sunday, clear with smoke at night,
• Mostly sunny and Very Hot with smoke Monday (Labor Day), partly cloudy with smoke and a slight (20%) chance of showers and thunderstorms Monday night,
• Partly cloudy with a slight (20%) chance of AM showers and thunderstorms, mostly sunny with smoke and Hot Tuesday afternoon,then just partly cloudy with smoke Tuesday night.
• lows near 60 highs 98-93.
• Partly cloudy with more smoke and a bit cooler and a slight (20%) chance of showers and thunderstorms Wednesday afternoon, a slight (20%) chance of evening showers and thunderstorms, a (30%) chance of showers and a slight (20%) chance of thunderstorms Wednesday night,
• A mix of clouds and sun with areas of smoke and a slight (20%) chance of showers and thunderstorms Thursday AM, a mix of clouds and sun and cooler with more smoke and a bit cooler with a slight (20%) chance of showers Thursday afternoon, partly cloudy with smoke and a slight (20%) chance of showers in the evening, mostly cloudy with smoke and a slight (20%) chance of showers Thursday night,
• Morning smoke, a mix of clouds and sun and a bit warmer with more smoke and a slight (20%) chance of showers Friday afternoon, partly cloudy with a slight (20%) chance of showers Friday night and Saturday AM, then just partly cloudy and a bit warmer Saturday afternoon.
• highs 87-77 lows 60-56. (seasonal averages high 80 low 49)

________________

 

Forecast for Roseburg:

• Clear with areas of smoke tonight,
• Sunny and Very Hot with areas of smoke Sunday, clear with patchy evening smoke, areas of smoke late Sunday night,
• Sunny and Very Hot with areas of smoke Monday (Labor Day), partly cloudy with patchy smoke at night and Tuesday, then partly cloudy with patchy smoke and a slight (20%) chance of thunderstorms Tuesday night.
• lows near 65 highs 101-99.
• Partly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of thunderstorms Wednesday, mostly cloudy with a chance of showers and a slight (20%) chance of thunderstorms at night,
• Mostly cloudy with a chance of showers and a slight (20%) chance of thunderstorms and a bit cooler Thursday, mostly cloudy with a slight (20%) chance of evening showers and thunderstorms, a slight (20%) chance of showers Thursday night,
• Partly cloudy and a bit cooler with patchy smoke and a slight (20%) chance of showers Friday and at night,
• Partly cloudy with patchy smoke and a slight (20%) chance of AM showers, then just partly cloudy with patchy smoke Saturday afternoon.
• highs 92-84 lows 63-57. (seasonal averages high 82 low 54)

_____________________

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

• Clear with patchy coastal smoke tonight while patchy evening inland smoke and areas of inland smoke late tonight,
• Patchy AM coastal smoke and sunny and a bit warmer Sunday afternoon while areas of inland AM smoke and sunny with patchy inland smoke in the afternoon, clear with patchy coastal smoke late at night while patchy inland smoke at night,
• Sunny with patchy AM coastal smoke while areas of AM inland smoke, sunny and a bit cooler with patchy inland smoke Monday afternoon (Labor Day), partly cloudy with patchy inland smoke Monday night,
• Then partly cloudy and a bit cooler Tuesday and Tuesday night.
• lows near 57 highs near 75-68.
• Partly cloudy and a bit cooler with a slight (20%) chance of thunderstorms Wednesday afternoon, mostly cloudy with showers and a slight (20%) chance of thunderstorms at night,
• Mostly cloudy with showers and a slight (20%) chance of thunderstorms Thursday, a slight (20%) chance of showers Thursday night,
• Partly cloudy and cooler with a slight (20%) chance of Friday through Saturday AM, then just partly cloudy Saturday afternoon.
• highs 68-66 lows 58-56. (seasonal averages high 66 low 52)

________________

Forecast for the Cascades in Lane County:

• Clear with smoke tonight,
• Sunny and Hot, but a bit warmer with smoke Sunday, clear with smoke Sunday night,
• Mostly sunny and Hot with more smoke Monday, partly cloudy with a slight (20%) chance of showers and thunderstorms with smoke Monday night,
• Partly cloudy and a bit cooler with smoke and a slight (20%) chance of showers and thunderstorms Tuesday and at night.
• free air freezing level above 12,000 ft. tonight through Tuesday night.
• lows 60-57 warming back to 60 Tuesday night highs 86-88 cooling back to 86 Tuesday.
• A mix of clouds and sun with smoke and a (30%) chance of showers and thunderstorms Wednesday AM, a (30%) chance of afternoon showers and thunderstorms and a bit cooler, mostly cloudy with evening smoke and a slight (20%) chance of showers and thunderstorms, partly cloudy with areas of smoke and a (30%) chance of showers and thunderstorms Wednesday night,
• A mix of clouds and sun with areas of smoke and a (30%) chance of AM showers and thunderstorms, a  (30%) chance of showers and a bit cooler Thursday afternoon, partly cloudy with smoke and a (30%) chance of showers at night,
• Morning smoke, a mix of clouds and sun and a bit cooler with a (30%) chance  of showers and areas of afternoon smoke and a slight (20%) chance of showers Friday, partly cloudy areas of smoke and and a (30%) chance of evening showers, partly cloudy with a slight (20%) chance of showers late Friday night and Saturday AM, then just partly cloudy Saturday afternoon.
• free air freezing level above 12,000 ft. Wednesday, snow level above 8,000 ft Wednesday night through Saturday AM, then above 12,000 ft. Saturday afternoon.
• highs 86-74 lows 56-52.

 

________________

**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.

________________

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

________________