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 slowly gets pushed southward toward us.. The graphic for days 3-7 shows that frontal system, 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 late this coming week. 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 20 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 22 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: GREEN- Burning is Allowed.

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 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:

• A mix of clouds and sun with a slight (20%) chance of showers and a bit cooler this afternoon (under 0.10 in. of rain possible), partly cloudy with patchy fog and freezing fog late tonight and Tuesday AM, just partly cloudy and a bit cooler in the afternoon, partly cloudy with areas of frost late Tuesday night,
• Mostly cloudy with a slight (20%) chance of rain and areas of AM frost and patchy freezing fog, increasing clouds to cloudy with a (40%) chance of rain,  snow and sleet and a bit cooler Wednesday afternoon, then mostly cloudy with a good (50%) chance of rain, freezing rain and sleet Wednesday night.
• highs 44-35 lows 30-27 warming to 29 Wednesday night.
• Mostly cloudy with AM rain likely (70%), a bit warmer with a slight (20%) chance of rain Thursday afternoon, a (40%) chance of rain and snow Thursday night,
• Mostly cloudy with a (40%) chance of rain and snow showers Friday (snow level 1,000 ft.), a slight (20%) chance of rain and snow showers at night (snow level 1,000 ft.),
• A mix of clouds and sun and a bit cooler Saturday with a slight (20%) chance of rain and snow showers, partly cloudy with a slight (20%) chance of snow Saturday night,
• Then cloudy and a bit warmer with a slight (20%) chance of rain Sunday.
• highs near 38 lows 30-20. (seasonal averages high 46 low 34)

 

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Forecast for Roseburg:

• Mostly cloudy and a bit cooler today with a slight (20%) chance of afternoon rain and snow showers (under 0.10 in. of rain possible, snow level 2,500 ft.), partly cloudy this evening, mostly cloudy with patchy fog late tonight,
• Sunny with areas of AM fog, partly cloudy and a bit cooler Tuesday afternoon and in the evening, mostly cloudy with patchy fog and isolated showers late Tuesday night,
• Mostly cloudy with AM rain and snow showers, a good (50%) chance of rain and a bit cooler Wednesday afternoon (snow level 2,000 ft. rising to 3,500 ft. in the afternoon), then rain likely (70%) Wednesday night.
• highs 46-42 warming to 44 Wednesday lows 33-39.
• Mostly cloudy with a (40%) chance of rain Thursday AM, a good (50%) chance of showers and a bit warmer in the afternoon, cloudy with isolated rain and snow showers late at night,
• Mostly cloudy with scattered rain and snow showers likely (70%) and a bit cooler Friday afternoon, a (30%) chance of isolated rain and snow showers Friday night through Sunday AM, then isolated showers Sunday afternoon.
• highs 45-40 warming to 42 Sunday lows 34-27. (seasonal averages high 48 low 36)

 

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

• Mostly cloudy with a good (50%) chance of showers and a bit cooler this afternoon (under 0.10 in. of rain possible), partly cloudy this evening, mostly cloudy with patchy fog late tonight,
• Mostly sunny with areas of AM fog, partly cloudy and a bit cooler Tuesday afternoon and evening, mostly cloudy with patchy fog late and a (30%) chance of isolated coastal showers late Tuesday night while mostly cloudy with patchy fog and a 40%) chance of isolated inland showers late Tuesday night,
• Scattered coastal showers Wednesday AM while inland AM showers and inland rain likely (70%) and a bit cooler Wednesday afternoon, cloudy with evening rain likely (70%), then a good (50%) chance of rain late Wednesday night.
• highs 52-48 lows 36-38.
• Mostly cloudy with a (30%) chance of AM rain, a (30%) chance of scattered showers Thursday afternoon,  evening showers, rain and snow showers late Thursday night,
• A (30%) chance of scattered rain and snow showers Friday AM, a (40%) chance of scattered showers and a bit cooler in the afternoon, isolated evening showers, a slight (20%) chance of isolated rain and snow showers late Friday night,
• Mostly cloudy with isolated rain and snow showers Saturday AM, then a bit cooler with a slight (20%) chance of isolated showers Saturday afternoon through Sunday (a bit warmer).
• highs 45-48 lows 37-33. (seasonal averages high 51 low 40)

 

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Forecast for the Cascades in Lane County:

• A mix of clouds and sun with a slight (20%) chance of snow showers this afternoon, partly cloudy  tonight,
• A mix of clouds and sun and a bit cooler Tuesday, partly cloudy in the evening, mostly cloudy and cold with a slight (20%) chance of snow flurries late Tuesday night,
• Cloudy with a (30%) chance of snow Wednesday AM, a bit cooler with snow likely (70%) in the afternoon,  snow with freezing rain and sleet likely (70%) in the evening, then mostly cloudy with snow freezing rain and sleet late Wednesday night.
• snow level at the surface today, free air freezing level at the surface tonight, at the surface rising to 3,500 ft. Tuesday afternoon, snow level 3,500 ft. Tuesday night, at the surface Wednesday, then 3,500 ft.  Wednesday night.
• highs 30-26 lows near 22.
• Mostly cloudy and a bit warmer with snow and rain likely (70%) Thursday, a good (50%) chance of snow at night,
• Mostly cloudy and a bit cooler with a (40%) chance of snow showers Friday, a good (50%) chance of snow showers Friday night,
• A mix of clouds and sun with a slight (20%) chance of snow showers and a bit cooler Saturday, partly cloudy with a slight (20%) chance of snow at night,
• Then a mix of clouds and sun and a bit warmer with a slight (20%) chance of snow Sunday.
• snow level 2,500 ft. Thursday, then at the surface Thursday night through Sunday.
• highs 32-22 warming to 25 Sunday lows 18-12.

 

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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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