Here is my weekly weather quiz question. What is a “Bubble 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) has taken over giving us summer-like weather for only one more day today. The graphics for days 1-3 show the next frontal system moving in Friday morning. An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) takes over sending us cooler air and more storms. The graphics for days 3-7 show a complex frontal system moving in south of us Monday and another front moving down from the northwest Thursday that should move through the Pacific Northwest next Friday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 33 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 24 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 35 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

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Advisories:

• A Health Advisory has been Reissued for the Link and Klamath rivers to Keno Dam. An error caused the advisory to be cancelled. 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.
• 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.
• 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:

Ducks vs California, at Autzen Stadium – Kickoff: 7:30 PM PDT – Partly cloudy 64 with a slight (20%) chance of showers, cooling as the game progresses, Light Wind.

Beavers vs Washington, at Reser Stadium – Kickoff: 5:00 PM PDT – Partly cloudy 65 with a slight (20%) chance of showers, cooling as the game progresses, Light Wind.

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

• Clear this evening, mostly cloudy late tonight,
• Mostly cloudy with rain (0.10 in. of rain possible) and much colder Friday, a slight (20%) chance of evening showers, partly cloudy with a slight (20%) chance of showers and cooler late Friday night,
• A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Saturday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a sight (20%) chance of showers late at night,
• Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) Sunday afternoon and evening, then a good (50%) chance of showers late Sunday night.
• lows 54-45 highs 67-65.
•  A mix of clouds and sun with a good (50%) chance of showers Monday, partly cloudy with a (40%) chance of showers Monday night,
• A mix of clouds and sun with a (30%) chance of showers Tuesday AM, a slight (20%) chance of showers and a bit warmer in the afternoon, partly cloudy with a slight (20%) chance of showers Tuesday night,
• Partly cloudy with a slight (20%) chance of showers Wednesday and at night,
• Then a mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Thursday.
• highs 63-67 lows near 42. (seasonal averages high 72 low 44)

 

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Forecast for Roseburg:

• Mostly clear this evening, partly cloudy with a slight (20%) chance of rain late tonight,
• AM rain, mostly cloudy with rain likely (70%) and colder Friday afternoon, a (40%) chance of showers Friday night,
• Mostly cloudy with a (30%) chance of showers and a bit cooler Saturday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late Saturday night,
• Mostly cloudy and a bit cooler with a (40%) chance of showers Sunday and Sunday night.
• lows 54-44 highs 69-65.
• Mostly cloudy with a (30%) chance of showers and a bit cooler Monday and at night,
• Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday afternoon and at night,
• Partly cloudy with a slight (20%) chance of showers and a bit cooler Wednesday and Wednesday night,
• Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Thursday.
• highs 64-68 cooling to 66 Thursday lows 43-45. (seasonal averages high 74 low 48)

 

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

• Mostly cloudy with patchy evening coastal fog and areas of fog with a good (50%) chance of coastal rain late tonight while mostly clear this evening inland and mostly cloudy with a (30%) chance of inland rain late tonight,
• Areas of AM coastal fog, mostly cloudy with morning rain, rain likely (70%) and a bit cooler Friday afternoon, mostly cloudy with a (30%) chance of showers at night,
• Mostly cloudy and a bit warmer with a (30%) chance of showers Saturday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late Saturday night,
• Then mostly cloudy and a bit cooler with a good (50%) chance of showers Sunday and Sunday night.
• lows 56-44 highs 63-65  cooling back to 63 Sunday.
• Mostly cloudy and a bit cooler with a good (50%) chance of showers Monday and Monday night,
• Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy with a slight (20%) chance of showers Tuesday afternoon through Wednesday, then mostly cloudy with a slight (20%) chance of showers Wednesday night and Thursday.
• highs near 63 lows 48-46 warming back to 48 Wednesday night. (seasonal averages high 64 low 48)

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Forecast for the Cascades in Lane County:

• Clear this evening, partly cloudy late tonight,
• Becoming mostly cloudy with a (40%) chance of AM rain, and cooler with rain likely (70%) Friday afternoon (0.10 in. of rain possible), showers likely (70%) in the evening, a good (50%) chance of showers and colder Friday night (0.10 in. of rain possible),
• A mix of clouds and sun with a (40%) chance of AM rain and snow showers, a (40%) chance of showers and a bit cooler Saturday afternoon, partly cloudy with a (30%) chance of evening showers, mostly cloudy with a good (50%) chance of rain and snow showers late at night,
• Mostly cloudy with a good (50%) chance of AM rain and snow showers, a bit cooler with rain and snow showers likely (70%) Sunday afternoon and evening, a good (50%) chance of rain and snow showers late Sunday night.
• free air freezing level 13,000 ft. tonight, snow level above 8,000 ft. Friday, above 8,000 ft. falling to 7,500 ft. late Friday night,  6,500 ft. rising to 7,000 ft. Saturday afternoon,  5,500 ft. rising to 6,000 ft. Sunday, then 6,000 ft. falling to 5,500 ft. late Sunday night.
• lows 46-34 highs 56-45.
• A mix of clouds and sun with a good (50%) chance of rain and snow showers Monday, partly cloudy  a (40%) chance of rain and snow showers at night,
• A mix of clouds and sun with a (30%) chance of AM rain and snow showers Tuesday, a (30%) chance of afternoon showers, partly cloudy with a (30%) chance of evening showers, a slight (20%) chance of showers late at night,
• Partly cloudy with a slight (20%) chance of AM rain and snow showers,  a bit warmer with a (30%) chance of showers Wednesday afternoon and evening, partly cloudy with a (30%) chance of showers late Wednesday night,
• Then partly cloudy and a bit warmer with a slight (20%) chance of showers Thursday.
• snow level 5,500 ft. rising to 6,000 ft. Monday, 6,500 ft. rising to 7,500 ft. Monday night, 5,500 ft. rising to 6,000 ft. Tuesday, 6,000 ft. falling to 5,000 ft. Tuesday night, 5,000 ft. rising to 6,500 ft. Wednesday, 6,500 ft. rising to 7,500 ft. Wednesday night, then 7,500 ft. rising to 8,000 ft. Thursday.
• highs 45-52 lows 30-32.

 

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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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