Here is my weekly weather quiz question. What is an “Active Storage Capacity?”  Please remember to post your answer at the bottom of this page. An email will not suffice. The first person to post the correct answer 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 (Shaded “U” shape with blue arrows) continues to bring westerly airflow our way. That means a continuation of  the ocean moisture feed to the Pacific Northwest. Short-lived High Pressure drys us out a little Friday and Saturday, but you can see on days 3 through 7 frontal activity returns by Saturday night.

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Air Quality Index:

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

Oakridge: The Air Quality Index is 7 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 11 in the Good category measuringParticulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• A Blue-green Algae Health Advisory has been issued for Howard Bay located in Upper Klamath Lake. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily. Cell counts in other parts of the lake were low.
• A Permanent Health Advisory is 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.
• A Blue-Green Algae Health Advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.

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

• Mostly cloudy with a slight (20%) chance of showers this evening, mostly cloudy with patchy fog late tonight and Wednesday AM, a slight (20%) chance of rain and a bit warmer Wednesday afternoon,  cloudy with a good (50%) chance of rain Wednesday night,
• Mostly cloudy with a good (50%) chance of AM rain, showers likely (70%) and a bit warmer Thursday afternoon, a good (50%) chance of showers at night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Friday, then mostly cloudy with a slight (20%) chance of showers Friday night.
• lows 47-53 cooling back to 47 Friday night highs 60-63 cooling back to 60 Friday.
• Partly cloudy and a bit cooler Saturday, mostly cloudy with a good (50%) chance of showers at night,
• Mostly cloudy with a (40%) chance of rain Sunday, a good (50%) chance of rain  Sunday night,
• Mostly cloudy and a bit cooler with a good (50%) chance of showers Monday, a good (50%) chance of rain Monday night,
• Then mostly cloudy with a (30%) chance of rain and a bit warmer Tuesday.
• highs 62-57 warming to near 60 Tuesday lows 50-46. (seasonal averages high 63 low 41)

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Your College Football Forecast:

Friday October 21st:

Ducks vs California at California Memorial Stadium, Berkeley, CA – Kickoff 7:30 PM – Partly cloudy 66 and cooling as the game progresses, Wind WSW 5-10 mph.

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Saturday October 22nd:

Beavers vs Washington at  Husky Stadium, Seattle, WA – Kickoff 3:30 PM – Mostly cloudy, light rain likely 59 and cooling as the game progresses, Wind SSE 5 mph.

 

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Forecast for Roseburg:

• Mostly cloudy with patchy fog late tonight and Wednesday AM, mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday afternoon through Thursday AM, a (30%) chance of showers in the afternoon and Thursday night,
• Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Friday and at night.
• lows 45-53 cooling to 47 Friday night highs 67-69 cooling to 63 Friday.
• Partly cloudy and a bit warmer Saturday, mostly cloudy with a slight (20%) chance of evening showers, a slight (20%) chance of rain late Saturday night,
• Mostly cloudy with a (30%) chance of rain and a bit cooler Sunday, a slight (20%) chance of rain Sunday night,
• A (40%) chance of rain Monday and Monday night,
• Then mostly cloudy with a slight (20%) chance of rain Tuesday.
• highs 64-60 warming to 62 Tuesday lows near 48. (seasonal averages high 65 low 44)

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

• Mostly cloudy with patchy fog late tonight,
• Patchy AM inland fog otherwise mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday afternoon, a (30%) chance of rain Wednesday night,
• Mostly cloudy with a slight (20%) chance of AM rain, a bit cooler with a (30%) chance of showers Thursday afternoon, a (40%) chance of showers at night,
• Just mostly cloudy and a bit cooler Friday, then mostly cloudy with a slight (20%) chance of showers Friday night.
• lows 48-55 cooling back to 48 Friday night highs 64-60.
• Partly cloudy and a bit warmer Saturday, increasing clouds to cloudy with a (40%) chance of evening showers, mostly cloudy with a (30%) chance of rain Saturday night through Sunday night, a good (50%) chance of showers Monday, a (40%) chance of showers at night,
• Then mostly cloudy with a slight (20%) chance of rain Tuesday.
• highs 62-60 lows near 50. (seasonal averages high 61 low 46)

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late tonight,
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Wednesday afternoon and in the evening, a (40%) chance of rain late Wednesday night,
• Mostly cloudy with a good (50%) chance of  rain Thursday AM, a bit warmer with a good (50%) chance of showers Thursday afternoon and at night,
• A slight (20%) chance of AM showers, a mix of clouds and sun and a bit cooler with a (30%) chance of showers Friday afternoon, then partly cloudy with a slight (20%) chance of showers at night.
• snow level 5,500 ft. tonight, 7,500 ft. Wednesday afternoon, above 8,000 ft. Wednesday night through Thursday night, 7,500 ft. Friday, then 7,000 ft. Friday night..
• lows 32-42 cooling to 36 Friday night highs 52-55 cooling to 50 Friday.
• Partly cloudy and a bit warmer Saturday, mostly cloudy with a (30%) chance of rain Saturday night,
• Mostly cloudy and a bit cooler with a (40%) chance of rain Sunday, a slight (20%) chance of rain at night,
• Mostly cloudy and a bit cooler with a good (50%) chance of showers Monday, a (40%) chance of rain Monday night,
• Then mostly cloudy with a slight (20%) chance of rain or snow and a bit warmer Tuesday.
• free air freezing level 9,000 ft. Saturday, snow level 7,500 ft. Saturday night through Sunday night,  6,500 ft. Monday, 5,000 ft. Monday night, then 5,500 ft. Tuesday.
• highs 52-45 warming to 48 Tuesday lows 38-34.
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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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