Here is my new weekly weather quiz question. What is an“Acre-foot?” 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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The Upper level airflow will keep the moisture pouring into the Pacific Northwest. The days 1-3 graphic shows a stationary front that  gets pushed southward toward us. That frontal system is commonly called a “backdoor” front because it moves in from the opposite direction from which fronts usually come toward us, through the Pacific Northwest to bring in colder air. The graphic for days 3-7 shows then next storms headed our war. We’re still seeing snow accumulations increasing in the mountains. For mountain snow conditions at the local ski areas check out their websites or give them a call.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 30 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 20 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 14 in the Good category measuring Particulate Matter.

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

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Home Wood Heating Advisory:

Eugene-Springfield: YELLOW- Caution is Advised.

Oakridge: YELLOW- Caution is Advised.

*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 WINTER STORM WATCH IS IN EFFECT FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING FOR THE CENTRAL WILLAMETTE VALLEY AND THE SOUTH WILLAMETTE VALLEY, THE NORTHERN OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, THE NORTHERN OREGON CASCADES, AND THE CASCADES IN LANE COUNTY.
• A WINTER STORM WATCH IS IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE WEDNESDAY  NIGHT FOR THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE, AND THE UPPER HOOD RIVER VALLEY.
• A WINTER STORM WATCH IS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY AFTERNOON FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS THE KLAMATH BASIN, AND FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A HIGH WIND WATCH IS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE WEDNESDAY NIGHT FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• 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.
• 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 areas of lingering fog and cooler this afternoon, partly cloudy with areas of frost late tonight,
• Mostly cloudy Wednesday with freezing rain, sleet, possible snow and rain (possibly heavy at times) and a bit cooler in the afternoon (0.50 in. of rain possible, 2-5 in. of snow possible), cloudy with evening snow with rain, freezing rain and sleet likely (70%), a good (50%) chance of rain and snow late Wednesday night (0.50 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of snow showers and a bit warmer Thursday, mostly cloudy with a slight (20%) chance of evening snow showers, partly cloudy with a slight (20%) chance of snow showers late Thursday night,
• lows 30-32 cooling back to 28 Thursday night highs 40-35 warming back to 40 Thursday.
• Mostly cloudy with a (40%) chance of snow showers Friday, then a slight (20%) chance of snow showers at night.
• A mix of clouds and sun Saturday with a (40%) chance of snow showers, partly cloudy with a (40%) chance of rain and snow showers Saturday night (snow level 1,000 ft.),
• Cloudy with a (40%) chance of rain and snow Sunday, then a (40%) chance of rain Sunday night and Monday.
• highs 39-44 lows near 28. (seasonal averages high 45 low 34)

 

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Forecast for Roseburg:

• Partly cloudy this afternoon, mostly cloudy with a slight (20%) chance of rain and snow and patchy fog late tonight (under 0.10 in. of rain possible),
• Mostly cloudy and a bit warmer with rain Wednesday (AM snow level 3,500 ft.), cloudy with evening rain, a good (50%) chance of rain at night (0.50 in. of rain possible, snow level 2,000 ft. late at night),
• Mostly cloudy with a (30%) chance of rain and snow and a bit warmer Thursday (snow level 1,500 ft rising to 2,000 ft. in the afternoon), a good (50%) chance of rain and snow showers late Thursday night.
• highs 42-48 lows 33-38 cooling to 34 Thursday night.
• Mostly cloudy with a slight (20%) chance of rain and snow showers and a bit cooler Friday, a slight (20%) chance of rain and snow showers with patchy freezing fog late at night and Saturday AM, a (30%) chance of rain and snow showers in the afternoon and Saturday night,
• Then mostly cloudy with a (30%) chance of rain and snow and a bit warmer Sunday through Monday.
• highs 42-44 lows 27-32. (seasonal averages high 47 low 36)

 

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

• Partly cloudy this afternoon and evening, mostly cloudy with a good (50%) chance of  rain tonight (under 0.10 in. of rain possible),
• Rain possibly heavy at times Wednesday (1.00 in. of rain possible), cloudy with evening rain likely (70%), then a good (50%) chance of rain late Wednesday night (0.75 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of rain Thursday (snow level 2,000 ft.), then mostly cloudy with a (30%) chance of showers Thursday night.
• highs near 50 lows 36-38.
• Mostly cloudy with a (40%) chance of rain and snow showers and a bit cooler Friday, a (40%) chance of evening showers,  a slight (20%) chance of rain and snow showers with patchy fog and freezing fog late Friday night and Saturday AM, mostly cloudy with a (30%) chance of showers at night,
• Then mostly cloudy and a bit warmer with a (30%) chance of rain Sunday through Monday.
• highs 47-52 lows 36-38. (seasonal averages high 51 low 40)

 

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Forecast for the Cascades in Lane County:

• Just partly cloudy and a bit cooler this afternoon and this evening, mostly cloudy and cold with a slight (20%) chance of snow late tonight,
• Cloudy and a bit warmer with snow and rain Wednesday (1.50 in. of rain possible, 5-11 in. of snow possible), snow Wednesday night and breezy (Wind: SE 10-15 mph shifting to S 15-25 mph gusts to 40 mph),
• Mostly cloudy and a bit cooler with a good (50%) chance of snow showers Thursday, a slight (20%) chance of evening snow showers, then partly cloudy with a slight (20%) chance of snow showers late at night.
• free air freezing level at the surface today, free air freezing level 3,500 ft. this evening, snow level 2,500 ft. Wednesday afternoon and Wednesday night, then at the surface Thursday and Thursday night.
• highs 28-34 cooling to 30 Thursday lows 22-30 cooling to 15 Thursday night.
• Mostly cloudy and a bit cooler with a (30%) chance of snow showers Friday, a slight (20%) chance of snow showers Friday night,
• A mix of clouds and sun with a (40%) chance of snow showers and a bit warmer Saturday, partly cloudy with a (40%) chance of snow showers at night,
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of snow Sunday, mostly cloudy with a (30%) chance of snow Sunday night,
• Then a mix of clouds and sun and a bit warmer with a slight (20%) chance of snow Monday.
• snow level at the surface Friday through Monday.
• highs 23-32 lows 7-16.

 

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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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