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 surface low pressure and a complex frontal system moving through Oregon today. The graphics for days 3-7 show an increase in complex frontal systems moving our way Friday through next Tuesday continuing the rain chances.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 21 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 17 in the Good category measuring Particulate Matter.

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

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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ADVISORIES:

• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL NOON TODAY ABOVE 3,500 FT. FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT 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 UNTIL 8 PM THIS EVENING FOR THE EAST SLOPES OF THE OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 11 AM TODAY ABOVE 5,000 FT. FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 11 AM TODAY ABOVE 5,000 FT. FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM TODAY BELOW 5,000 FT. FOR THE SOUTH CENTRAL OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 11 AM TODAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT UNTIL MIDNIGHT TODAY NIGHT FOR HARNEY COUNTY, BAKER COUNTY, AND MALHEUR COUNTY.
• A HIGH WIND WARNING IS IN EFFECT UNTIL 8 PM TONIGHT FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WIND ADVISORY IS IN EFFECT FROM 8 PM TONIGHT UNTIL 2 PM TODAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A WIND ADVISORY IS IN EFFECT UNTIL 8 PM TONIGHT FOR JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM TODAY ABOVE 2,500 FT. FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS AND JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM TODAY ABOVE 2,000 FT. FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY.

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

• Mostly cloudy with AM rain, a good (50%) chance of rain and cooler this afternoon (0.10 in. of rain possible), a good (50%) chance of evening showers, just partly cloudy with patchy frost late tonight,
• Mostly cloudy with patchy AM frost, partly cloudy and a bit warmer with a slight (20%) chance of showers Wednesday afternoon, a slight (20%) chance of evening showers, partly cloudy with patchy fog late at night,
• Mostly cloudy with a slight (20%) chance of AM showers, a bit cooler with a good (50%) chance of showers Thursday afternoon and evening, then a slight (20%) chance of showers late Thursday night.
• highs 54-59 lows 33-36.
• Mostly cloudy with a good (50%) chance of  AM showers, showers likely (70%) and a bit cooler Friday afternoon, showers Friday night,
• Mostly cloudy and a bit cooler with rain Saturday and at night,
• Mostly cloudy and a bit cooler with rain Sunday and in the evening, a good (50%) chance of rain Sunday night,
• Mostly cloudy with AM rain and snow likely (70%), then rain Monday afternoon.
• highs 52-48 lows 38-34. (seasonal averages high 58 low 38)

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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 and snow, showers and a bit cooler this afternoon (0.10 in. of rain possible, 1 in. of snow possible, snow level 2,000 ft. rising to 2,500 ft.), a (40%) chance of evening rain and snow showers, just mostly cloudy late tonight,
• Partly cloudy and a bit warmer with a slight (20%) chance of showers Wednesday (afternoon snow level 3,000 ft.), just partly cloudy Wednesday night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Thursday, then a slight (20%) chance of showers Thursday night.
• highs 54-56 cooling back to 54 Thursday lows 37-40.
• Mostly cloudy with a (40%) chance of rain and snow Friday, evening rain, rain and snow late Friday night,
• Mostly cloudy and a bit cooler with rain and snow Saturday and at night,
• Mostly cloudy and a bit cooler with rain and snow Sunday and Sunday night,
• Mostly cloudy with AM rain and snow likely (70%), then rain and snow Monday afternoon.
• highs 54-49 lows 42-35. (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 coastal rain while inland AM rain and snow, showers and a bit warmer this afternoon (0.10 in. of rain possible, snow level 1,500 ft. rising to 2,000 ft.), evening showers likely (70%), a slight (20%) chance of showers late tonight (0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of AM coastal showers and partly cloudy and a bit cooler with a slight (20%) chance of coastal showers Wednesday afternoon while partly cloudy with a slight (20%) chance of inland showers Wednesday night.
• Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Thursday and at night.
• highs 54-52 lows near 37.
• Mostly cloudy with a good (50%) chance of rain Friday, rain and breezy Friday night,
• Mostly cloudy and a bit cooler with rain and breezy Saturday and at night,
• Mostly cloudy and a bit cooler with rain Sunday, rain and snow Sunday night,
• Then mostly cloudy with rain and snow Monday.
• highs near 52-49 lows 38-34. (seasonal averages high 55 low 43)

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

• Mostly cloudy with snow and rain and a bit cooler today (0.25 in. of rain possible, 2 in. of snow possible) and breezy (Pass Wind: SE 20-25 mph gusts to 45 mph decreasing and shifting to S 10-15 mph gusts to 25 mph), evening rain and snow likely (70%), partly cloudy with a slight (20%) chance of snow showers late tonight,
• Mostly cloudy with a slight (20%) chance of AM snow showers, rain and snow showers likely (70%) and a bit warmer Wednesday afternoon, mostly cloudy with a good (50%) chance of evening rain showers and snow showers, partly cloudy with a slight (20%) chance of rain and snow showers late at night,
• Mostly cloudy and a bit cooler with a good (50%) chance of rain and snow showers Thursday, evening snow and rain showers likely (70%), then a good (50%) chance of snow and rain showers late Thursday night.
• snow level 3,000 ft. today, 2,500 ft. tonight, 2,000 ft. rising to 4,000 ft. Wednesday afternoon, 3,000 ft. Wednesday night, 3,500 ft. Thursday, then 3,000 ft. Thursday night.
• highs 35-39 cooling to 37 Thursday lows 20-23.
• Mostly cloudy with a good (50%) chance of AM rain showers and snow showers, a good (50%) chance of showers and a bit cooler Friday afternoon, evening snow and rain showers likely (70%), snow and rain showers late Friday night (snow possibly heavy at times late at night),
• Mostly cloudy with snow and rain and a bit cooler Saturday (snow possibly heavy at times), evening rain and snow, snow late Saturday night (snow possibly heavy at times),
• Mostly cloudy and a bit cooler with snow Sunday and in the evening (snow possibly heavy at times), a good (50%) chance of snow late Sunday night,
• Then mostly cloudy and a bit cooler with snow Monday.
• snow level 2,500 ft. Friday, 3,500 ft. Friday night, 3,000 ft. Saturday, 2,500 ft. Saturday night, 2,500 ft. Sunday, then 2,000 ft. Sunday night and Monday.
• highs 35-30 lows 25-18.

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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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