Here is my weekly weather quiz question. What is “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 elongated Upper Level Low Pressure Trough takes over returning valley rain and mountain snow. The days 1-3 graphic shows a frontal system moving through the Pacific Northwest ushering in some much colder air. The graphic for days 3-7 shows another frontal system that will push into Oregon Friday of next week.  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 16 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 21 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: 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 WINTER WEATHER ADVISIORY IS IN EFFECT FROM 7 PM SATURDAY UNTIL 10 PM SUNDAY FOR THE WESTERN COLUMBIA RIVER GORGE, AND THE CENTRAL COLUMBIA RIVER GORGE.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 PM SATURDAY UNTIL 10 PM SUNDAY FOR THE NORTHERN OREGON CASCADE FOOTHILLS, AND THE NORTHERN OREGON CASCADES.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM SATURDAY UNTIL 10 PM SUNDAY FOR THE CASCADE FOOTHILLS IN LANE COUNTY AND THE CASCADES IN LANE COUNTY.
• A FROST ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL 8 AM SATURDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WINTER STORM WATCH IS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING ABOVE 2,000 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY,  JOSEPHINE COUNTY, AND JACKSON COUNTY.
• *A WINTER STORM WATCH IS IN EFFECT FROM SATURDAY EVENING THROUGH SUNDAY EVENING FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS.
• AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 3 PM TODAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, JACKSON COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN 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.

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

• Partly cloudy and colder tonight,
• A mix of clouds and sun with patchy freezing fog in the AM, mostly sunny and cooler Saturday afternoon, becoming mostly cloudy with a (40%) chance of evening rain, rain likely (70%) late Saturday night (0.10 in. of rain possible),
• Cloudy with AM rain (0.25 in. of rain possible) and snow showers likely (70%) Sunday (New Year’s Day), a good (50%) chance of snow showers and a bit cooler in the afternoon, a good (50%) chance of snow showers and colder Sunday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with a slight (20%) chance of snow showers Monday, then just partly cloudy at night.
• lows 28-35 cooling to 17 Monday night highs 38-29.
• Mostly sunny and a bit cooler Tuesday, clear and cold at night,
• Sunny and warmer Wednesday, clear at night,
• Mostly sunny and a bit warmer Thursday, partly cloudy Thursday night,
• Then mostly cloudy and a bit warmer with a (30%) chance of showers Friday.
• highs 27-37 lows 13-22. (seasonal averages high 45 low 34)

 

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Forecast for Roseburg:

• Partly cloudy this evening, mostly clear and colder with patchy freezing fog tonight and Saturday AM, sunny and a bit cooler Saturday afternoon, becoming mostly cloudy with a (30%) chance of rain and snow showers in the evening, rain and snow showers late Saturday night (0.10 in. of rain possible, 1-2 in. of snow possible above 1,500 ft. and 1 in. of snow possible lower elevations, snow level 900 ft.),
• Mostly cloudy with rain and snow showers ( 0.25 in. of rain possible, snow level 1,500 ft. falling to 700 ft. in the afternoon) and a bit cooler Sunday (New Year’s Day), evening rain and snow showers, snow showers and colder late Sunday night (under 0.10 in. of rain possible, snow level 200 ft.),
• Cloudy with a good (50%) chance of snow showers and a bit cooler Monday, then mostly cloudy with a slight (20%) chance of snow showers at night.
• lows 32-22 highs 42-32.
• Partly cloudy and a bit cooler Tuesday, mostly clear at night,
• Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night,
• Mostly sunny and a bit warmer Thursday, partly cloudy at night,
• Then mostly cloudy with a slight (20%) chance of snow showers and a bit warmer Friday.
• highs 29-39 lows 13-9 warming to 19 Thursday night. (seasonal averages high 48 low 36)

 

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

• Partly cloudy this evening, mostly clear late tonight,
• Sunny at the shore in the AM and partly cloudy and a bit cooler Saturday with a slight (20%) chance of coastal showers in the afternoon while sunny inland in the AM and partly cloudy inland in the afternoon, mostly cloudy a (40%) chance of evening showers, showers late Saturday night (0.10 in. of rain possible, snow level 1,500 ft. rising to 2,000 ft. late at night),
• Mostly cloudy and a bit cooler with coastal showers while rain and snow showers (0.25 in. of rain possible, snow level 1,500 ft. falling to 800 ft.) inland Sunday (New Year’s Day), coastal rain and snow showers Sunday night while evening inland rain and snow showers and inland rain and snow showers likely (70%) and colder Sunday night (0.10 in. of rain possible, snow level 500 ft. falling to 0 ft.),
• Cloudy with a (30%) chance of AM snow showers, a (40%) chance of snow showers and a bit cooler Monday afternoon, then mostly cloudy and colder with a slight (20%) chance of snow showers Monday night.
• lows 33-35 cooling to 33 Monday night highs 48-39.
• Mostly sunny and a bit cooler Tuesday, mostly clear Tuesday night,
• Mostly sunny and a bit warmer Wednesday, mostly clear at night,
• Partly cloudy in the AM, sunny and a bit warmer Thursday afternoon, partly cloudy at night,
• Then mostly cloudy with a (40%) chance of rain and snow showers and a bit warmer Friday.
• highs 37-45  lows 22-32. (seasonal averages high 51 low 40)

 

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Forecast for the Cascades in Lane County:

• Partly cloudy this evening, clear and cold late tonight,
• Sunny and a bit cooler Saturday, becoming mostly cloudy with good (50%) chance of evening snow, snow and cold late Saturday night (3-6 in. of snow possible),
• Snow showers and a bit cooler Sunday (New Year’s Day), snow showers likely (70%) and cold at night,
• Cloudy and cooler with a (40%) chance of snow showers Monday, then mostly cloudy with a slight (20%) chance of snow showers at night.
• free air freezing level at the surface tonight, at the surface rising to 3,500 ft. Saturday afternoon, snow level at the surface Saturday night though Monday night.
• lows 15-23 cooling to 3 Monday night highs 32-15.
• A mix of clouds and sun and a bit cooler Tuesday, mostly clear Tuesday night,
• Mostly sunny and a bit warmer Wednesday and Thursday, clear Wednesday night, partly cloudy Thursday night,
• Then mostly cloudy  a bit warmer andwith a slight (20%) chance of snow showers Friday.
• free air freezing level at the surface Tuesday through Thursday night, then snow level at the surface Friday.
• highs 13-28 lows 0-9.

 

 

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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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