Here is my weekly weather quiz question. What is a “Capping Inversion?”  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 Low Pressure Trough takes over enhancing the rain chances again. The graphics for days 1-3 show the frontal system pushing the warm front northward through the Pacific Northwest today and another cold front on the coast this morning. The graphics for days 3-7 show complex frontal systems approaching Saturday through next Wednesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 52 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 66 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 74 in the Moderate category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

 

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Advisories:

• A HIGH WIND WARNING IS IN EFFECT FROM NOON TODAY UNTIL 11 PM THIS EVENING NEAR THE BEACHES AND HEADLANDS FOR THE NORTH OREGON COAST AND THE COAST RANGE OF NORTHWEST OREGON.
• A HIGH SURF ADVISORY IS IN EFFECT FROM 5 PM THURSDAY UNTIL 11 PM FRIDAY FOR THE CURRY COUNTY COAST AND THE SOUTH CENTRAL OREGON COAST.
• A Health Advisory remains in effect for the Link and Klamath from Keno Dam to J.C. Boyle Dam (downstream from Keno Dam). Water monitoring has confirmed the presence of blue-green algae and the toxins they produce. 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.

 

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Your College Football Forecast:

Saturday October 21st:

Ducks vs UCLA, at the Rose Bowl, Pasadena, California – Kickoff: 1 PM PDT – Preliminary weather forecast- Sunny 78, warming to 82 then cooling by the end of the game, Wind S 5 mph.

Beavers have a bye week

Next game scheduled:

Thursday October 26th:

Beavers vs Stanford, at Reser Stadium – Kickoff: 6:00 PM PDT –Way too soon for a preliminary weather forecast.

 

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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 warmer today with a slight (20%) chance of rain, mostly cloudy with a good (50%) chance of rain late tonight,
• Mostly cloudy and a bit cooler Thursday with rain (0.75 in. of rain possible), showers Thursday night (0.50 in. of rain possible),
• Mostly cloudy and a bit cooler with showers likely (70%) Friday, the cloudy with rain at night.
• highs 68-53 lows 48-44.
• Cloudy with rain and a bit warmer Saturday and Saturday night,
• Cloudy and a bit warmer with rain likely (70%) Sunday and at night,
• A mix of clouds and sun and a bit warmer Monday, then partly cloudy Monday night and Tuesday.
• highs 59-66 lows 52-45. (seasonal averages high 63 low 41)

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Forecast for Roseburg:

• Mostly cloudy this AM, partly cloudy and a bit warmer this afternoon and evening,  increasing clouds to mostly cloudy with a sight (20%) chance  of rain late tonight,
• Cloudy with rain and a bit cooler Thursday (0.50 in. of rain possible), showers Thursday night (0.50 in. of rain possible),
• Showers and a bit cooler Friday, mostly cloudy with a (40%) chance of evening showers, then showers likely (70%) late Friday night.
• highs 72-57 lows 48-45.
• Mostly cloudy with rain and a bit warmer Saturday and Saturday night,
• Mostly cloudy with showers likely (70%) Sunday, areas of fog with a (40%) chance of showers at night,
• Areas of AM and late night fog partly cloudy and a bit warmer Monday, mostly clear Monday night,
• Areas of AM fog, then mostly sunny Tuesday afternoon.
• highs 62-69 lows 52-49. (seasonal averages high 65 low 44)

 

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

• Mostly cloudy areas of morning coastal fog and drizzle, a bit warmer today with a slight (20%) of afternoon rain (under 0.10 in. of rain possible), a (30%) chance of rain tonight (under 0.10 in. of rain possible),
• Cloudy and breezy (Wind: S 15-25 mph gusts to 40 mph) with rain and a bit cooler Thursday (0.75 in. of rain possible), coastal showers and a slight (20%) chance of thunderstorms Thursday night while inland showers at night (0.50 in. of rain possible),
• Cloudy with showers and a bit cooler Friday and Friday night.
• highs 64-57 lows 55-47 warming to 52 Friday night.
• Cloudy with rain and breezy Saturday and Saturday night,
• Cloudy with showers likely (70%) and a bit warmer Sunday, mostly cloudy with areas of fog and a (40%) chance of showers at night,
• Areas of AM fog, partly cloudy and a bit warmer Monday afternoon, mostly clear with areas of fog Monday night and Tuesday AM, then mostly sunny Tuesday afternoon.
• highs 62-65 lows 53-48. (seasonal averages high 61 Low 46)

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Forecast for the Cascades in Lane County:

• A mix of clouds and sun and a bit warmer today, just partly cloudy tonight,
• Cloudy and much cooler with rain Thursday and in the evening, rain and snow showers and a bit cooler late Thursday night and Friday, then rain and snow Friday night.
• free air freezing level 11,000 ft. today and tonight, snow level 8,000 ft. Thursday, 5,000 ft. Thursday night, then 4,000 ft. Friday and Friday night.
• highs 58-34 lows 40-30.
• Cloudy and a bit warmer with rain Saturday and Saturday night,
• Mostly cloudy and a bit warmer with rain likely (70%) Sunday, mostly cloudy with a good (50%) chance of rain at night,
• Just partly cloudy and a bit warmer Monday and Monday night,
• Then mostly sunny and a bit warmer Tuesday.
• snow level 7,000 ft. Saturday, above 8,000 ft. Saturday night through Sunday night, free air freezing level 13,000 ft. Monday, 14,000 ft. Monday night, then 15,000 ft. Tuesday.
• highs 44-55 lows 39-37.

 

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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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