Here is my weekly weather quiz question What is the “Kelvin Temperature Scale?

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An Upper Level Low Pressure Trough (“U” shape) continues to control the weather of the Pacific Northwest. The graphics for days 1-3 show the complex frontal system that’s moving through Oregon. The graphics for days 3-7 show just one complex frontal system offshore to our northwest Thursday and next Friday.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 7 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 9 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 4 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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ADVISORIES:

•  A WINTER STORM WARNING IS IN EFFECT FROM 11 PM TONIGHT UNTIL 5 PM SUNDAY ABOVE 4,000 FT. FOR THE NORTHERN BLUE MOUNTAINS OF OREGON AND THE NORTHWEST BLUE MOUNTAINS.
• A WINTER STORM WARNING IS IN EFFECT FROM 5 PM THIS EVENING  TO 11 PM SUNDAY FOR THE EAST SLOPES OF THE OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT FROM 8 PM TODAY UNTIL 11 PM SUNDAY ABOVE 2,500 FT. THE NORTHERN OREGON CASCADES, THE CASCADES IN LANE COUNTY,
• A WINTER STORM WARNING  IS IN EFFECT FROM 9 PM TONIGHT UNTIL 11 PM SUNDAY ABOVE 1,500 FT. FOR THE NORTHERN OREGON CASCADE FOOTHILLS.
• A WINTER STORM WARNING IS IN EFFECT FROM 5 AM SATURDAY UNTIL 11 PM SUNDAY ABOVE 1,000 FT. FOR THE CASCADE FOOTHILLS IN LANE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT FROM 11 PM TONIGHT UNTIL 11 PM SUNDAY ABOVE 1,500 FT. FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT FROM 11 PM TONIGHT UNTIL 11 PM SUNDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL AND EASTERN LAKE COUNTY.
•  A WINTER STORM WARNING IS IN EFFECT FROM 11 PM TONIGHT UNTIL 11 PM SUNDAY  ABOVE 2,500 FT. FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS AND JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 11 PM TONIGHT UNTIL 5 PM SUNDAY ABOVE 4,000 FT. FOR THE SOUTHERN BLUE MOUNTAINS OF OREGON, THE OCHOCO, AND THE JOHN DAY HIGHLANDS.
• A WINTER STORM WARNING IS IN EFFECT FROM 11 PM TONIGHT UNTIL 11 PM SUNDAY FOR ABOVE 1,500 FT. FOR THE COAST RANGE OF NORTHWEST OREGON.   AND THE CENTRAL COAST RANGE OF WESTERN OREGON.
• A WINTER WEATHER ADVISORY IS IN EFFECT FORM 11 PM TONIGHT UNTIL 11 PM SUNDAY ABOVE 1,500 FT. FOR THE UPPER HOOD RIVER VALLEY.
• A WIND ADVISORY IS IN EFFECT FROM 5 AM UNTIL 11 PM SATURDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY AND CENTRAL AND EASTERN LAKE COUNTY.

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

• Mostly cloudy and slightly cooler with showers and a slight (20%) chance of thunderstorms today (0.25 in. of rain possible, more in storms, small hail possible) and in the evening, showers late tonight (0.25 in. of rain possible, more in storms),
• Mostly cloudy with showers and a slight (20%) chance of thunderstorms and a bit cooler Sunday (0.25 in. of rain possible, small hail possible) and in the evening, a good (50%) chance of rain and snow showers late Sunday night (0.10 in. of rain possible, snow level 1,000 ft.),
• Mostly cloudy with AM snow showers likely (70%) with rain, showers and a slight (20%) chance of thunderstorms and a bit warmer Monday afternoon (snow level 1,500 ft.), then rain and  snow showers likely (70%) late Monday night (snow level 1,000 ft.).
• highs 49-45 warming to 48 Monday lows 36-32 warming to 34 Monday night.
• Mostly cloudy with AM rain and snow showers likely (70%), showers likely (70%) and a bit warmer Tuesday afternoon, partly cloudy with a good (50%) chance of showers Tuesday night , and a (30%)  chance of snow showers with patchy fog late Tuesday night,
• Clouds and sun with a (30%) chance of AM showers and snow showers, a mix of clouds and sun and a bit warmer with a (30%) chance of showers Wednesday afternoon, partly cloudy with a (30%) chance of showers and patchy fog late at night,
• A mix of clouds and sun with a (40%) chance of showers and a bit warmer Thursday, partly cloudy with a (40%) chance of showers Thursday night,
• Then a mix of clouds and sun with a (40%) chance of showers Friday.
• highs 49-57 lows 33-30 warming to 35 Wednesday night. (seasonal averages high 59 low 39)

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Home Wood Heating Advisory:

Posted Daily

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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Eugene-Springfield Pollen Count:

Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy with AM rain, snow and a slight (20%) chance of thunderstorms and a bit cooler this afternoon (0.25 in. of rain possible, 1 in. of snow possible, snow level 2,500 ft.), showers, snow showers and a slight (20%) chance of thunderstorms tonight (0.10 in. of rain possible, 1-2 in. of snow possible, snow level 2,500 ft. falling to 2,000 ft. late tonight),
• Mostly cloudy with rain showers, snow showers and a slight (20%) chance of thunderstorms and a bit cooler  Sunday (0.25 in. of rain possible, snow level 1,500 ft.) and in the evening, rain showers and snow showers likely (70%) with a slight (20%) chance of thunderstorms late Sunday night (0.10 in. of rain possible),
• Mostly cloudy with AM rain and snow showers, showers and a bit warmer Monday, evening rain and snow likely (70%), then a good (50%) chance of rain and snow showers late Monday night.
• lows 39-34 warming to 36 Monday night highs 49-47 warming back to 40 Monday.
• Mostly cloudy with good (50%) chance of rain and snow showers and a bit cooler Tuesday and in the evening, a slight (20%) chance of rain and snow showers late at night,
• Mostly cloudy and a bit warmer with (30%) chance of rain and snow showers Wednesday, a (30%) chance of rain and snow showers Wednesday night,
• Mostly cloudy with a (30%) chance of rain and snow showers and a bit warmer Thursday, a (30%) chance of showers Thursday night,
• Then mostly cloudy and a bit warmer with a (30%) chance of showers Friday.
• highs 47-59 lows 32-37. (seasonal averages high 60 low 41)

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

• Mostly cloudy with AM rain, showers with a slight (20%) chance of thunderstorms and slightly cooler this afternoon (0.10 ion. of rain possible), coastal showers with a slight (20%) chance of thunderstorms tonight while inland evening inland showers with a slight (20%) chance of thunderstorms and inland showers and snow showers with a slight (20%) chance of thunderstorms late tonight (0.25 in. of rain possible, snow level 2,000 ft. late at night),
• Mostly cloudy with coastal showers and a slight (20%) chance of thunderstorms Sunday while inland showers, snow showers and a slight (20%) chance of thunderstorms Sunday (0.25 in. of rain possible, snow level 1,500 ft., cooler with showers and a slight (20%) chance of thunderstorms Sunday afternoon, coastal showers and (40%) chance of thunderstorms Sunday night while inland showers, snow showers and a (30%) chance of thunderstorms at night (0.25 in. of rain possible, ),
• Mostly cloudy with AM showers, snow showers and a slight (20%) chance of thunderstorms, showers and a slight (20%) chance of thunderstorms Monday afternoon, then rain and snow showers likely (70%) Monday night.
• highs near 49 lows 39-34 warming to 36 Monday night.
• Mostly cloudy with rain and snow showers likely (70%) Tuesday, a good (50%) chance of evening showers, a (40%) chance of rain and snow showers Tuesday night,
• Mostly cloudy with a (40%) chance of AM rain and snow showers, a (40%) chance of showers and a bit warmer Wednesday afternoon, a (30%) chance of showers at night,
• Mostly cloudy and a bit warmer with a (40%) chance of showers Thursday and Thursday night,
• Then mostly cloudy with a (40%) chance of showers Friday.
• highs 53-56 lows 32-39. (seasonal averages high 56 low 43)

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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:

• Mostly cloudy with AM snow showers (areas of blowing snow), showers and snow showers with a slight (20%) chance of thunderstorms and a bit cooler this afternoon (0.75 in. of rain possible, snow possibly heavy at times, visibility under 0.25 mi. at times, small hail possible) and breezy (Pass wind: W 15-25 mph gusts to 35 mph), evening snow showers with a slight (20%) chance of thunderstorms (small hail possible), snow showers with patchy blowing snow late tonight (snow possibly heavy at times, visibility under 0.25 mi.),
• Mostly cloudy with snow showers and a bit cooler Sunday with a slight (20%) chance of thunderstorms and a bit cooler Sunday afternoon (snow possibly heavy at times, patchy blowing snow) and breezy (Pass Wind: SW 15-25 mph gusts to 40 mph), evening snow showers with a slight (20%) chance of thunderstorms, snow showers likely (70%) late Sunday night,
• Mostly cloudy with snow showers and a bit cooler Monday and in the evening, then a good (50%) chance of snow showers Monday night.
• snow level 3,000 ft. today, 2,000 ft. tonight and Sunday, then at the surface Sunday night through Monday night.
• highs 32-28 lows 23-18.
• Mostly cloudy with snow showers and a bit warmer Tuesday, a good (50%) chance of evening snow showers, partly cloudy with a good (50%) chance of snow showers late Tuesday night,
• Clouds and sun with a (40%) chance of AM rain showers and snow showers, a mix of clouds and sun with a (40%) chance of showers and a bit warmer Wednesday afternoon and evening, partly cloudy with a (30%) chance of snow showers late at night,
• Clouds and sun with a (40%) chance of AM snow and rain showers, a (40%) chance of showers and a bit warmer Thursday afternoon, partly cloudy with a (40%) chance of rain and snow showers Thursday night,
• Then a mix of clouds and sun and a bit warmer with a good (50%) chance of rain and snow Friday.
• snow level 1,500 ft. Tuesday and Tuesday night, 2,500 ft. Wednesday and Wednesday night, 3,500 ft. Thursday, 4,000 ft. Thursday night, then 4,500 ft. Friday.
• highs 29-42 lows 117-24.

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For all of your Eugene-Springfield and Lane County News, Weather, and Sports go to: EugeneDailyNews.com

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