Here is my weekly weather quiz question. What is  “Air Stagnation?” Please remember to post your answer at the bottom of this page. 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 with blue arrows) will be controlling our weather for the foreseeable future. The graphic for days 1-3 shows the frontal system that moves in and the one moving on to the coast combining to bring back the freezing Winter precipitation for a short time. You can expect just about everything except the kitchen sink to fall from the sky. The graphic for days 3-7 shows more complex frontal systems building up and heading our way. 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 13 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 25 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 WINTER STORM WATCH IS IN EFFECT FROM TONIGHT THROUGH FRIDAY EVENING FOR THE COAST RANGE OF NORTHWEST OREGON,
• A WINTER STORM WATCH IS IN EFFECT FROM 10 PM TONIGHT UNTIL 4 AM FRIDAY FOR THE CENTRAL COAST RANGE OF WESTERN OREGON,
• A WINTER STORM WATCH IS IN EFFECT FROM 1 AM UNTIL 4 PM FRIDAY  FOR THE LOWER COLUMBIA.
• A WINTER STORM WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH LATE FRIDAY NIGHT FOR THE GREATER PORTLAND METRO AREA.
• A WINTER WEATHER ADVISORY IN IN EFFECT FROM 1 AM UNTIL 10 AM FRIDAY FOR THE CENTRAL WILLAMETTE VALLEY,   AND THE NORTHERN OREGON CASCADE FOOTHILLS.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM TONIGHT UNTIL UNTIL 4 AM FRIDAY FOR THE SOUTH WILLAMETTE VALLEY AND THE CASCADE FOOTHILLS IN LANE COUNTY.
• A WINTER STORM WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY AFTERNOON FOR THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA GORGE, AND THE UPPER HOOD RIVER VALLEY.
• A WIND ADVISORY IS IN EFFECT UNTIL 4 AM FRIDAY FOR THE GREATER PORTLAND METRO AREA.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 PM TODAY UNTIL 10 AM SATURDAY ABOVE 500 FT. FOR THE SOUUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES AND THE SISKIYOU MOUNTAINS.
• 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:

• Mostly cloudy with a good (50%) chance of showers and a bit cooler with sun breaks this afternoon (under 0.10 in. of rain possible), a good (50%) chance of evening rain, likely (70%), rain with freezing rain likely (70%) late tonight (0.25 in. of rain possible, 0.10 in. of ice accumulation possible),
• Mostly cloudy with rain and a bit warmer Friday (0.25 in. of rain possible), rain and breezy (Wind: S 10-15 mph increasing to S 15-25 mph late at night) at night (0.25 in. of rain possible),
• Mostly cloudy and a bit warmer with rain Saturday and Saturday night.
• highs 40-49 lows 32-42 cooling to 38 Saturday night.
• Cloudy with a good (50%) chance of rain Sunday, rain Sunday night,
• Mostly cloudy and a bit cooler with a good (50%) chance of showers Monday, showers likely (70%) at night,
• Mostly cloudy with a good (50%) chance of rain Tuesday, a (30%) chance of showers at night,
• Then cloudy and a bit warmer with a good (50%) chance of rain Wednesday.
• highs 52-45 warming to 47 Wednesday lows near 35. (seasonal averages high 49 low 35)

 

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Forecast for Roseburg:

• Mostly cloudy and a bit warmer with a good (50%) chance of rain this afternoon (0.25 in. of rain possible), evening rain, rain late tonight through Friday night (0.25 in. of rain possible each day tonight through Friday night),
• Mostly cloudy with showers and a bit cooler Saturday and Saturday night.
• highs near 53 lows near 40-42 cooling to 39 Saturday night.
• Cloudy and a bit warmer with a (30%) chance of rain Sunday, rain Sunday night,
• Mostly cloudy and a bit cooler with a (30%) chance of rain and snow showers Monday, rain and snow showers likely (70%) Monday night,
• Rain likely (70%) and a bit warmer Tuesday, mostly cloudy with a (40%) chance of showers at night,
• Then mostly cloudy and a bit warmer with a (30%) chance of showers Wednesday.
• highs 54-48 warming back to 54 Wednesday lows 42-38. (seasonal averages high 52 low 37)

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

• Mostly cloudy and a bit warmer with rain coastal rain this afternoon while a good (50%) chance of inland rain this afternoon (0.25 in. of rain possible), coastal rain tonight while inland evening rain likely (70%) and inland rain late tonight,
• Rain and a bit cooler Friday and Friday night,
• Then mostly cloudy and a bit cooler with showers Saturday and Saturday night.
• highs 56-53 lows 44-46 cooling to 43 Saturday night.
• Cloudy and breezy with a (40%) chance of rain Sunday AM, a bit warmer with rain likely (70%) and breezy in the afternoon, rain and windy Sunday night,
• Mostly cloudy and breezy with a good (50%) chance of showers and a bit cooler Monday, showers likely (70%) Monday night,
• Cloudy and a bit warmer with rain likely (70%) Tuesday, mostly cloudy with a good (50%) chance of showers at night,
• Then mostly cloudy with showers likely (70%) and a bit warmer Wednesday.
• highs 55-49 warming to 54 Wednesday lows near 42. (seasonal averages high 52 low 40)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of rain and snow showers this afternoon (0.10 in. of rain possible), a good (50%) chance of evening rain and snow,  rain and snow late tonight (0.25 in. of rain possible, 1-3 in. of snow possible),
• Then rain and snow Friday (a bit warmer) through Saturday night (0.50 in. of rain possible, 1-4 in. of snow possible Friday).
• snow level 4,000 ft. this afternoon, 4,500 ft. tonight, 5,000 ft. Friday, then 4,500 ft. Friday night through Saturday night.
• highs 32-37 cooling to 35 Saturday lows 28-30 cooling back to 28 Saturday night.
• Cloudy and a bit warmer with a good (50%) chance of rain and snow Sunday, rain and snow Sunday night,
• Mostly cloudy and a bit cooler with rain and snow showers likely (70%) Monday, rain and snow showers Monday night,
• Rain and snow Tuesday, mostly cloudy with a (40%) chance of rain and snow showers at night,
• Then cloudy with a good (50%) chance of rain and a bit warmer Wednesday
• snow level 4,500 ft. Sunday, 5,000 ft. Sunday night, 3,000 ft. Monday and Monday night, 3,500 ft. Tuesday, 5,500 ft. Tuesday night, then 7,000 ft. Wednesday.
• highs 38-33 warming to 36 Wednesday lows 30-24.

 

 

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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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