Here is my weekly weather quiz question. What is a “Cap Cloud?” 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 Low Pressure Trough (Shaded “U” shape with blue arrows) moved away as an Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) starts to move toward us warming temperatures back to normal. Another Upper level Low Pressure Trough will approach the Pacific Coast late in the week into the weekend helping to change our weather again. The graphics for days 3-7 show a cold front moving from the northwest at us Saturday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 1 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

__________________

Advisories:

• A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 9 AM WEDNESDAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
• A Health Advisory remains in effect for the Link and Klamath rivers to Keno Dam. 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.
• 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 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 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.

 

________________

Your College Football Forecast:

October 7th:

Ducks vs Washington State, at Autzen Stadium – Kickoff: 5:00 PM PDT – Partly cloudy 67, slight chance of showers, cooling as the game progresses.

Beavers vs USC, at Los Angeles Coliseum – Kickoff: 1:00 PM PDT – Sunny 84 warming to near 88 by the end of the game.

 

________________

 

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

• Clear tonight,
• Patchy AM fog, sunny and a bit warmer Wednesday, clear at night,
• Sunny and a bit warmer Thursday, clear Thursday night,
• Mostly sunny and a bit warmer Friday, then partly cloudy with a slight (20%) chance of showers  at night.
• lows 37-45 highs 72-74.
• Partly cloudy and a bit cooler with a (40%) of chance of showers Saturday, partly cloudy and a bit cooler with a slight (20%) chance of showers Saturday night and Sunday, partly cloudy Sunday night,
• Mostly sunny and a bit warmer Monday (Columbus Day) and Tuesday, clear Monday night.
• highs 67-63 warming to 72 Tuesday lows 42-40 warming back to 42 Monday night. (seasonal averages high 70 low 43)

 

________________

 

Forecast for Roseburg:

• Clear tonight,
• Sunny and a bit warmer Wednesday and Thursday, mostly clear both nights,
• Mostly sunny and a bit warmer Friday, then mostly clear Friday night.
• lows 43-47 highs 74-78.
• Partly cloudy and a bit cooler with a slight (20%) chance of showers Saturday, just partly cloudy at night,
• Mostly sunny and a bit cooler Sunday, mostly clear Sunday night,
• Then mostly sunny and a bit warmer Monday (Columbus Day) and Tuesday, mostly clear Monday night,
• highs 69-72 lows 44-42. (seasonal averages high 73 low 48)

 

_____________________

 

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

• Clear tonight,
• Sunny and a bit cooler Wednesday and Thursday, clear both nights,
• Mostly sunny and a bit cooler Friday, then mostly clear at night.
• lows 46-52 highs 69-67.
• Partly cloudy and a bit cooler with a slight (20%) of chance of showers Saturday, partly cloudy Saturday night,
• Mostly sunny Sunday, clear at night,
• Mostly sunny and a bit warmer and Monday (Columbus Day) and Tuesday, mostly clear Monday night.
• highs 64-66 lows 50-47 warming back to 50 Monday night. (seasonal averages high 63 low 48)

________________

Forecast for the Cascades in Lane County:

• Clear tonight,
• Sunny and a bit warmer Wednesday and Thursday, clear both nights,
• Mostly sunny and a bit cooler Friday, then mostly clear Friday night.
• free air freezing level 9,000 ft. tonight and Wednesday, 10,000 ft. falling to 9,000 ft. Wednesday night, 10,000 ft. rising to 11,000 ft. Thursday, 12,000 ft. Thursday night, then 14,000 ft. Friday and Friday night.
• lows 34-37 highs 55-63.
• Partly cloudy and a bit cooler with a slight (20%) chance of showers Saturday through Sunday night,
• Then mostly sunny and a bit warmer Monday (Columbus Day) and Tuesday, mostly clear Monday night.
• snow level above 8,000 ft. Saturday, 8,000 ft. Saturday night, 7,500 ft. Sunday and Sunday night, free air freezing level 15,000 ft. Monday, 13,000 ft. Monday night, then 14,000 ft. Tuesday.
• highs 53-50 warming to 56 Tuesday lows 33-36.

 

________________

**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.

________________