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 just offshore Friday then moving in. The graphics for days 3-7 show just one frontal system to our northwest  next Thursday.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 18 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 8 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 FRIDAY 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 FRIDAY TO 11 PM SUNDAY FOR THE EAST SLOPES OF THE OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT FROM 5 PM FRIDAY UNTIL 11 PM SUNDAY ABOVE 2,500 FT. THE NORTHERN OREGON CASCADES, THE CASCADES IN LANE COUNTY, THE NORTHERN OREGON CASCADE FOOTHILLS, AND THE CASCADES FOOTHILLS IN LANE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT FROM 11 PM FRIDAY UNTIL 11 PM SUNDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT FROM 11 PM FRIDAY 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 FRIDAY UNTIL 11 PM SUNDAY  ABOVE 2,500 FT. FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS AND JACKSON COUNTY.
• A WINTER STORM WATCH IS IN EFFECT FROM FRIDAY AFTERNOON THROUGH THROUGH SUNDAY AFTERNOON ABOVE 3,000 FT. FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• A WINTER STORM WATCH IS IN EFFECT FROM FRIDAY AFTERNOON THROUGH THROUGH SUNDAY AFTERNOON FOR THE EAST SLOPES OF THE OREGON CASCADES.
• A WINTER STORM WATCH IS IN EFFECT FROM FRIDAY EVENING THROUGH THROUGH LATE SUNDAY NIGHT FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 11 PM FRIDAY UNTIL 5 PM UNTIL 5 PM SUNDAY ABOVE 4,000 FT. FOR THE SOUTHERN BLUE MOUNTAINS OF OREGON, THE OCHOCO, AND THE JOHN DAY HIGHLANDS.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 5 PM FRIDAY UNTIL 5 PM SUNDAY FOR ABOVE 2,000 FT. FOR THE COAST RANGE OF NORTHWEST OREGON AND THE CENTRAL COAST RANGE OF WESTERN OREGON.

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

• Mostly cloudy with a slight (20%) chance of evening showers, good (50%) chance of rain late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of AM rain, rain and a bit cooler Friday afternoon (0.10 in. of rain possible), rain at night (1.00 in. of rain possible),
• Mostly cloudy AM rain, showers (0.25 in. of rain possible, more in storms) and a slight (20%) chance of thunderstorms Saturday afternoon (small hail possible) and evening, showers late at night (0.10 in. of rain possible),
• Mostly cloudy with showers and a slight (20%) chance of thunderstorms and a bit cooler Sunday afternoon (small hail possible), then evening rain and snow showers late Sunday night (snow level 1,000 ft.).
• lows 38-32 highs 49-47.
• Mostly cloudy with a good (50%) chance of AM rain and snow showers, showers and a bit warmer Monday afternoon (snow level 1,000 ft.), evening showers likely (70%),  partly cloudy with a good (50%) chance of rain and  snow showers late Monday night (snow level 1,000 ft.),
• Mostly cloudy with a good (50%) chance of AM snow showers, a good (50%) chance of showers and a bit warmer Tuesday afternoon, partly cloudy with a good (50%) chance of evening showers, a slight (20%) chance of showers late at night,
• Clouds and sun with a slight (20%) chance of AM showers, a mix of clouds and sun and a bit warmer with a (40%) chance of showers Wednesday afternoon, partly cloudy with a (40%) chance of showers Wednesday night,
• Clouds and sun with a slight (20%) chance of AM showers, then a good (50%) chance of rain and a bit warmer Thursday afternoon.
• highs 49-56 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 a (30%) chance of showers tonight, (under 0.10 in. of rain possible, snow level 2,500 ft.)
• Cloudy with a slight (20%) chance of AM rain and snow showers, a good (50%) chance of rain Friday afternoon (under 0.10 in. of rain possible, snow level 2,500 ft. rising to 3,000 ft), rain Friday night (1.00 in., of rain possible, snow level 3,000 ft.) and breezy (Wind: S 15-25 mph),
• Mostly cloudy with and a bit cooler Saturday (0.25 in. of rain possible, snow level 2,500 ft.), evening rain and snow showers, showers, snow showers and a slight (20%) chance of thunderstorms late Saturday night (0.25 in.. of rain possible, snow level 2,500 ft. falling to 2,000 ft. late at night),
• Mostly cloudy AM rain and snow showers, showers, snow showers and a slight (20%) chance of thunderstorms and a bit cooler  Sunday afternoon, then rain and snow showers Sunday night.
• lows 39-34 highs 54-47.
• Mostly cloudy with rain and snow showers and a bit warmer Monday, evening rain and snow likely (70%), a good (50%) chance of rain and snow showers late Monday night,
• Mostly cloudy with good (50%) chance of rain and snow showers and a bit warmer Tuesday and in the evening, a slight (20%) chance of rain and snow showers late at night,
• Mostly cloudy and a bit warmer with slight (20%) chance of rain and snow showers Wednesday, a (30%) chance of rain and snow showers Wednesday night,
• A (30%) chance of AM rain and snow showers, then a (30%) chance of rain and a bit warmer Thursday afternoon.
• highs 48-56 lows 35-32 warming  back to 35 Wednesday night. (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 a (40%) chance of showers tonight 9under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of AM showers, coastal rain and a bit warmer Friday afternoon while a (40%) of inland rain Friday afternoon (under 0.10 in. of rain possible) and breezy (Wind: S 10-20 mph increasing and shifting to SW 20-25 mph late afternoon), patchy evening coastal fog, rain Friday night (1.00 in. of rain possible) and breezy (Wind: SW 20-25 mph gusts to 40 mph),
• Mostly cloudy with showers and a bit warmer Saturday (0.25 ion. of rain possible), coastal evening showers with coastal showers and a slight (20%) chance of thunderstorms late at night while inland showers at night (0.25 in. of rain possible, snow level 2,000 ft. late at night),
• Mostly cloudy with AM showers, snow showers and a slight (20%) chance of thunderstorms, a bit cooler with showers and a slight (20%) chance of thunderstorms Sunday afternoon, then rain and snow showers Sunday night.
• lows 39-33 highs 52-48.
• Mostly cloudy with rain and snow showers and a bit warmer Monday, evening rain and snow showers likely (70%), a good (50%) chance of rain and snow showers late Monday night,
• Mostly cloudy with a (40%) chance of AM rain and snow showers, a good (50%) chance of showers showers and a bit warmer Tuesday afternoon and evening, partly cloudy with a slight (20%) chance of rain and snow showers late at night,
• Mostly cloudy with a (30%) chance of AM rain and snow showers, a (30%) chance of showers and a bit warmer Wednesday afternoon, a (30%) chance of showers Wednesday night,
• Then mostly cloudy and a bit warmer with a (40%) chance of showers Thursday.
• highs 49-54 lows 35-32 warming to 36 Wednesday night . (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 a good (50%) chance of snow and rain showers tonight (0.10 in. of rain possible, 2 in. of snow possible),
• Mostly cloudy with a good (50%) chance of snow and rain and a bit cooler Friday (0.10 in. of rain possible, 1 in. of snow possible), snow and rain Friday night (7-13 in. of snow possible) and breezy (Pass Wind: SW 15-25 mph gusts to 40 mph late at night),
• Mostly cloudy with AM snow, snow and rain showers and a bit cooler Saturday afternoon (snow possibly heavy at times) and breezy (Pass wind: W 15-25 mph gusts to 35 mph), snow showers late at night (snow possibly heavy at times),
• 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 and breezy, then show showers Sunday night.
• snow level 3,000 ft. tonight, 2,500 ft. Friday, 3,000 ft. Friday night and Saturday, 2,000 ft. Saturday night and Sunday, then at the surface Sunday night.
• lows 25-17 highs 34-30.
• Mostly cloudy with snow showers and a bit cooler Monday and in the evening, a good (50%) chance of snow showers Monday night,
• Mostly cloudy with snow showers likely (70%) and a bit warmer Tuesday, a good (50%) chance of evening snow showers, partly cloudy with a slight (20%) chance of snow showers late at night,
• A mix of clouds and sun with a (40%) chance of snow showers and a bit warmer Wednesday afternoon and evening, partly cloudy with a (40%) chance of snow showers Wednesday night,
• Clouds and sun with a good (50%) chance of AM snow and rain showers, then a good (50%) chance of rain and snow and a bit warmer Thursday afternoon.
• snow level at the surface Monday through Tuesday, 2,000 ft. Tuesday night and Wednesday, 3,000 ft. Wednesday night, then 3,500 ft. Thursday.
• highs 28-38 lows 19-16 warming to 21 Wednesday night.

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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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