Here is my weekly weather quiz question for the last time. What is an “Active Storage Capacity?” Here is the correct answer. Active Storage Capacity: In hydrologic terms, the total amount of reservoir capacity normally available for release from a reservoir below the maximum storage level. It is total or reservoir capacity minus inactive storage capacity. More specifically, it is the volume of water between the outlet works and the spillway crest. I’ll have a new weekly weather quiz question for you starting Monday. 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 area with blue arrows) will be sending storms our way.  Check out days 1,2, & 3 graphic and you’ll see the next frontal system to bring us more rain. The days 3 through 7 graphic shows at least one more storm headed our way by Friday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 45 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 62 in the Moderate category measuring Particulate Matter.

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

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Home Wood Heating Advisory:

Eugene-Springfield: GREEN – Burning is Allowed.

Oakridge: GREEN – Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

• A WIND ADVISORY IS IN EFFECT FROM 11 PM THIS EVENING UNTIL 5 PM MONDAY FOR JACKSON COUNTY,
• A WIND ADVISORY IS IN EFFECT FROM 5 AM UNTIL 11 PM MONDAY FOR THE KLAMATH BASIN.
• A HIGH WIND WARNING IS IN EFFECT FROM 5 AM UNTIL 11 PM MONDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND  CENTRAL, EASTERN AND WESTERN LAKE COUNTY.
• 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 tonight,
• Cloudy with a good (50%) chance of AM showers, rain likely (70%) Monday afternoon, mostly cloudy with a slight (20%) chance of showers with patchy fog late Monday night and Tuesday, cloudy with a good (50%) chance of evening rain, rain likely (70%) late Tuesday night and Wednesday, then cloudy with a good (50%) chance of rain Wednesday night.
• lows 52-49 warming to 53 Wednesday night highs 60-63 cooling to 60 Wednesday.
• Cloudy and a bit cooler with a good (50%) chance of rain Thursday, mostly cloudy with a (30%) chance of showers Thursday night and Friday, a good (50%) chance of showers Friday night,
• Mostly cloudy and a bit warmer with a (40%) chance of showers Saturday, a (30%) chance of showers at night,
• Then mostly cloudy with a good (50%) chance of showers Sunday.
• highs 58-60 lows near 50. (seasonal averages high 60 low 40)

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Your College Football Forecast:

Saturday October 29th: Preliminary Forecast:

Ducks vs Arizona State at Autzen Stadium, Eugene, OR – Kickoff 2:00 PM – Mostly cloudy, near 60, with a 40% chance of showers and cooling toward the end of the game.

Beavers vs Washington State at Reser Stadium, Corvallis, OR – Kickoff 7:45 PM – Mostly cloudy, 57, with a 30% chance of showers and cooling as the game progresses.

 

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Forecast for Roseburg:

• Mostly cloudy with a slight (20%) chance of rain late tonight,
• Mostly cloudy with AM rain, rain and a bit cooler with a slight (20%) chance of thunderstorms Monday afternoon and breezy (Wind: S 15-25 mph decreasing to S 10-20 mph in the afternoon), a (30%) chance of showers Monday night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday, cloudy with a good (50%) chance of rain Tuesday night,
• Then cloudy and a bit warmer with a (40%) chance of rain Wednesday and Wednesday night.
• lows 52-50 warming to 53 Wednesday night highs 60-66.
• Mostly cloudy and a bit cooler with a (30%) chance of rain Thursday through Friday night,
• Then mostly cloudy with a good (50%) chance of rain Friday through Sunday.
• highs near 64 lows near 50. (seasonal averages high 63 low 43)

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

• Cloudy with a slight (20%) chance of evening coastal rain and rain late tonight while a (40%) of inland rain late tonight,
• Mostly cloudy with rain Monday AM, showers likely (70%) with a slight (20%) chance of thunderstorms in the afternoon and breezy (Wind: S 15-25 mph gusts to 40 mph), a (40%) chance of coastal showers and a slight (20%) chance of thunderstorms in the evening and showers likely (70%) late at night while a good (50%) chance of inland showers Monday night, breezy (Wind: S 20-30 mph at the shore while S 10-20 mph inland, gusts to 40 mph),
• Mostly cloudy and a bit warmer with a (30%) chance of showers Tuesday, cloudy with a good (50%) chance of evening rain, coastal rain late at night while rain likely (70%) inland late Tuesday night,
•  Then mostly cloudy and a bit warmer with rain likely (70%) Wednesday and Wednesday night.
• lows 52-55 cooling to 53 Wednesday night highs 62-65.
• Then mostly cloudy with a good (50%) chance of rain Thursday through Sunday.
• highs 63-60 lows near 52. (seasonal averages high 60 low 45)

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a slight (20%) chance of showers late tonight,
• Mostly cloudy with a (40%) chance of AM showers, rain Monday afternoon and breezy (Wind: S 15-25 mph gusts to 40 mph), evening showers likely (70%), a slight (20%) chance of showers at night and Tuesday, cloudy with a good (50%) chance of evening rain,  rain likely (70%) late Tuesday night,
• Cloudy with a good (50%) chance of AM rain, rain likely (70%) and a bit warmer Wednesday afternoon, then  cloudy with a good (50%) chance of rain Wednesday night.
• snow level 7,000 ft. tonight and Monday, 6,500 ft. Monday night, 6,000 ft. Tuesday, 7,500 ft. Tuesday night, then above 8,000 ft. Wednesday and Wednesday night.
• lows 39-34 warming to 42 Wednesday night highs 50-55.
• Cloudy and a bit cooler with a good (50%) chance of rain Thursday, mostly cloudy with a (30%) chance of showers at night,
• A good (50%) chance of showers and a bit warmer Friday and Friday night,
• Mostly cloudy and a bit warmer with a (40%) chance of showers Saturday and Saturday night,
• Then cloudy with a good (50%) chance of showers Sunday.
• snow level above 8,000 ft. Thursday, 8,000 ft. Thursday night through Saturday then 7,500 ft. Saturday night and Sunday.
• highs 52-54 lows 40-38.
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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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