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 28 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 55 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 55 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: 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 FROST ADVISORY IS IN EFFECT FROM 3 AM UNTIL 9 AM TUESDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WINTER STORM WATCH IS IN EFFECT FRTOM TUESDAY 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 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 a (30%) chance of showers tonight with patchy fog and freezing fog late tonight,
• Mostly cloudy with areas of fog and freezing fog Tuesday AM, just partly cloudy and cooler in the afternoon, partly cloudy with areas of frost late Tuesday night,
• Mostly cloudy Wednesday with a (30%) chance of snow and areas of AM frost and patchy freezing fog, snow likely (70%) with rain and a bit cooler Wednesday afternoon, showers with a good (50%) chance of evening freezing rain, showers late Wednesday night,
• Mostly cloudy with rain likely (70%) and a good (50%) chance of snow and a bit warmer Thursday, then a good (50%) chance of snow showers Thursday night.
• lows 28-32 cooling back to 28 Thursday night highs 40-36 warming back to 40 Thursday.
• Mostly cloudy with a (40%) chance of snow showers Friday, a slight (20%) chance of snow showers at night,
• A mix of clouds and sun Saturday with a (40%) chance of rain and snow showers, partly cloudy with a (40%) chance of rain and snow showers Saturday night,
• Cloudy with a (40%) chance of rain and snow Sunday, a (40%) chance of rain at night,
• Then mostly cloudy and a bit warmer with a (40%) chance of rain Monday.
• highs 39-44 lows near 28. (seasonal averages high 45 low 34)

 

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Forecast for Roseburg:

• Partly cloudy with patchy fog tonight,
• Partly cloudy with areas of AM fog and freezing fog, mostly cloudy and cooler Tuesday afternoon, mostly cloudy with patchy fog and a (40%) chance of rain and snow late Tuesday night,
• Mostly cloudy with AM rain likely (70%) Wednesday (snow level 1,500 ft.), a good (50%) chance of rain and a bit warmer Wednesday afternoon, rain at night (snow level 2,500 ft. late at night),
• Mostly cloudy with rain and snow likely (70%) and a bit warmer Thursday, a good (50%) chance of rain and snow showers late Thursday night.
• lows 27-32 highs 42-48.
• Mostly cloudy with a (40%) chance of rain and snow showers and a bit cooler Friday through 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 evening, mostly cloudy with patchy fog late tonight,
• Mostly cloudy with areas of AM coastal fog while areas of inland AM fog and freezing fog, partly cloudy Tuesday afternoon and evening, mostly cloudy with patchy fog late and a (40%) chance of  showers late Tuesday night,
• Rain likely (70%) Wednesday AM (snow level 2,000 ft.), rain possibly heavy at times Wednesday afternoon, cloudy with evening rain likely (70%), then a good (50%) chance of rain late Wednesday night,
• Mostly cloudy with AM rain likely (70%), a (30%) chance of rain Thursday afternoon, then mostly cloudy with a (30%) chance of showers Thursday night.
• lows 35-38 highs near 50.
• 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 late Friday night,
• Mostly cloudy with a (40%) chance of rain and snow showers Saturday, 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:

• Partly cloudy with a slight (20%) chance of snow showers tonight,
• Just partly cloudy and a bit cooler Tuesday and in the evening, mostly cloudy and cold with a slight (20%) chance of snow late Tuesday night,
• Cloudy with snow likely (70%) Wednesday AM, a bit warmer with snow and rain in the afternoon, rain and snow showers in the evening, showers late Wednesday night and breezy (Wind: SE 10-15 mph shifting to S 15-25 mph gusts to 45 mph),
• Mostly cloudy and a bit cooler with rain and snow likely (70%) Thursday, then a good (50%) chance of snow showers at night.
• snow level at the surface tonight, free air freezing level at the surface Tuesday, snow level 3,500 ft. Tuesday evening, 3,000 ft. Wednesday afternoon, 5,000 ft. rising to 6,500 ft. Wednesday night, 4,500 ft. Thursday, then at the surface Thursday night.
• lows 11-30 highs 28-34 cooling to 30 Thursday.
• Mostly cloudy and a bit cooler with a (40%) 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 2,500 ft. Thursday, then at the surface Thursday night through Sunday.
• 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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