Here is my weekly weather quiz question. What is “Accretion?” Pease 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 high pressure (Shaded “Arch” shape with blue arrows) will move to the east and a trough of low pressure (Shaded “U” shape area with blue arrows) will move in behind it returning the clouds, freezing rain, sleet, rain and snow. The graphic for days 3-7 shows a couple more fronts that will visit the Pacific Northwest bringing more precipitation our way starting with The one coming Friday. Willamette Pass Ski, Hoodoo ski area, and Mt. Ashland are all open for the season. For mountain snow conditions check out their websites or give them a call.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 29 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 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: 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 STORM WARNING IS IN EFFECT FROM 8 AM UNTIL 8 PM THURSDAY FOR THE NORTH OREGON COAST,
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM UNTIL 1 PM THURSDAY FOR THE CENTRAL OREGON COAST, THE CASCADES IN LANE COUNTY
• A WINTER STORM WARNING IS IN EFFECT FROM 8 AM UNTIL MIDNIGHT THURSDAY FOR THE COAST RANGE OF NORTHWEST OREGON, THE LOWER COLUMBIA, THE GREATER PORTLAND METRO AREA, THE NORTHERN OREGON CASCADE FOOTHILLS,
• A WIND ADVISORY IS IN EFFECT UNTIL 4 PM THURSDAY FOR THE GREATER PORTLAND METRO AREA.
• A WINTER STORM WARNING IS IN EFFECT FROM 4 AM UNTIL 2 PM THURSDAY FOR THE  THE CASCADE FOOTHILLS IN LANE COUNTY,
• A WINTER STORM WARNING IS IN EFFECT  FROM 7 AM UNTIL 4 AM FRIDAY FOR THE NORTHERN OREGON CASCADES
• A WINTER STORM WARNING IS IN EFFECT FROM 4 AM UNTIL 2 PM THURSDAY FOR THE SOUTH WILLAMETTE VALLEY.
• A WINTER STORM WARNING IS IN EFFECT FROM 8 AM THURSDAY UNTIL 4 PM FRIDAY FOR  THE UPPER HOOD RIVER VALLEY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM TONIGHT THROUGH 1 PM THURSDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS,
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM THIS EVENING UNTIL 4 PM THURSDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
• A HIGH WIND WATCH IS IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE THURSDAY NIGHT FOR NORTHERN AND EASTERN KLAMATH COUNTY, 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:

• Cloudy with a slight (20%) chance of snow tonight, freezing rain, light sleet with snow late late tonight (under 0.10 in. of rain possible, 1 in. of snow possible, 0.10 in. of ice accumulation possible),
• AM freezing rain, snow and sleet, rain and freezing rain and a bit warmer Thursday afternoon (0.50 in. of rain possible, 1 in. of snow possible, 0.25 in. of ice accumulation possible), rain Thursday night (0.25 in. of rain possible),
• Rain likely (70%) Friday AM, showers and a bit warmer in the afternoon (0.25 in. of rain possible), and at night (0.25 in. of rain possible),
• Then mostly cloudy with showers likely (70%) and a bit cooler Saturday and Saturday night.
• lows 29-42 cooling to 38 Saturday night highs 44-48.
• Mostly cloudy with a good (50%) chance of showers and a bit cooler Sunday, showers likely (70%) at night,
• Cloudy with a good (50%) chance of showers Monday, mostly cloudy with a good (50%) chance of showers Monday night and Tuesday, a (40%) chance of showers Tuesday night,
• Then rain likely (70%) and a bit warmer Wednesday.
• highs 45-43 warming back to 45 Wednesday lows 40-37. (seasonal averages high 46 low 34)

 

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Forecast for Roseburg:

• Cloudy with rain and snow and a slight (20%) chance of freezing rain this evening, rain and periods of light freezing rain late tonight (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 2,500 ft. late tonight) and Thursday AM, rain and warmer Thursday (0.25 in. of rain possible), rain late Thursday night (0.25 in. of rain possible)
• Mostly cloudy and a bit warmer with rain Friday (0.25 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft. in the afternoon) showers Friday night (0.25 in. of rain possible, snow level 3,000 ft. rising to 3,500 ft.),
• Mostly cloudy and a bit cooler with rain and snow showers Saturday, evening showers likely (70%), then a good (50%) chance of rain and snow showers late Saturday night.
• lows 36-45 cooling to 40 Saturday night highs 49-52 cooling back to 49 Saturday.
• Cloudy with a good (50%) chance of rain and snow showers and a bit cooler Sunday and Sunday night,
• Cloudy and a bit warmer Monday with a good (50%) chance of rain, rain likely (70%) Monday night and Tuesday, a good (50%) chance of showers Tuesday night,
• Then rain likely (70%) Wednesday.
• highs 47-50 lows 42-45. (seasonal averages high 48 low 37)

 

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

• Cloudy with late evening snow, snow late tonight (under 1.10 in. of rain possible),
• Mostly cloudy with rain and a bit warmer Thursday (0.25 in. of rain possible) and windy (Wind: SW 25-35 mph at the shore while SW 15-25 mph inland), rain Thursday night (0.25 in. of rain possible) and breezy (Wind: SW 15-25 mph with evening gusts to 40 mph) at night (0.25 in. of rain possible),
• Mostly cloudy with rain and a bit cooler Friday (0.25 in. of rain possible), and breezy (Wind: SW 15-25 mph with afternoon gusts to 40 mph), showers Friday night (0.25 in. of rain possible),
• Showers and a bit cooler Saturday, then a (40%) chance of showers Saturday night.
• lows 38-48 cooling to 44 Sunday night highs 52.
• Mostly cloudy with showers likely (70%) and a bit warmer Sunday, cloudy with a good (50%) chance of showers Sunday night,
• Cloudy with a good (50%) chance of rain Monday, rain likely (70%) at night,
• Mostly cloudy and a bit cooler with a good (50%) chance of rain Tuesday, a good (50%) chance of showers at night,
• Then rain Wednesday.
• highs 52 cooling to 50 Tuesday warming back to 52 Wednesday lows near 45. (seasonal averages high 51 low 40)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy and breezy (Wind: SE 15-25 mph gusts to 35 mph) with a slight (20%) chance of evening snow, snow, light sleet and freezing rain late tonight (0.10 in. of rain possible, 2 in. of snow possible),
• Snow with rain and freezing rain Thursday AM, rain and freezing rain in the afternoon (0.50 in. of rain possible, 2-4 in. of snow possible, 0.50 in. of ice accumulation possible), rain and snow Thursday night (0.50 in. of rain possible, 3-6 in. of snow possible),
• Rain and snow Friday AM, rain and snow showers and a bit cooler in the afternoon and Friday night,
• Cloudy and a bit cooler with rain and snow showers Saturday, then snow showers likely (70%) Saturday night.
• snow level at the surface tonight, 3,500 ft. rising to 6,500 ft. Thursday afternoon, 6,000 ft. falling to 4,000 ft. late Thursday night, 3,500 ft. Friday and Friday night, 3,000 ft. Saturday, then 2,500 ft. Saturday night.
• lows 17-32 cooling to 19 Saturday night highs 35-30.
• Mostly cloudy with a good (50%) chance of snow showers Sunday, snow showers at night,
• A bit warmer with rain and snow showers likely (70%) Monday, snow showers likely (70%) Monday night,
• Rain and snow showers likely (70%) and a bit cooler Tuesday, mostly cloudy with a good (50%) chance of rain and snow showers at night,
• Then rain and snow likely (70%) and a bit warmer Wednesday.
• snow level 2,500 ft. Sunday and Sunday night, 3,000 ft. Monday, 2,500 ft. Monday night, 4,500 ft. Tuesday, 4,000 ft. Tuesday night, then 5,500 ft. Wednesday.
• highs 29-35 cooling to 25 Tuesday warming to 34 Wednesday lows near 26.

 

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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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