Here is my weekly weather quiz question for the last time. What is the “Kelvin Temperature Scale? Here is the correct answer.  The Kelvin Temperature Scale is an absolute temperature scale in which a change of 1 Kelvin equals a change of 1 degree Celsius; 0ºK is the lowest temperature on the Kelvin scale. The freezing point of water is +273ºK (Kelvin) and the boiling point of +373ºK. It is used primarily for scientific purposes. It is also known as the Absolute 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 no complex frontal systems headed for Oregon. The graphics for days 3-7  Thursday through Monday show the complex frontal systems that will slide into the Pacific Northwest through the period.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 10 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 5 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 UNTIL 11 PM TONIGHT FOR THE EAST SLOPES OF THE OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 5 AM MONDAY ABOVE 1,500 FT. THE NORTHERN OREGON CASCADES, THE CASCADES IN LANE COUNTY,
• A WINTER STORM WARNING  IS IN EFFECT UNTIL 5 AM MONDAY  ABOVE 1,500 FT. FOR THE NORTHERN OREGON CASCADE FOOTHILLS AND THE CASCADE FOOTHILLS IN LANE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 11 AM MONDAY  FOR THE SISKIYOU MOUNTAINS AND THE SOUTHERN OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 11 AM MONDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL AND EASTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM MONDAY ABOVE 1,000 FT.FOR THE SOUTH CENTRAL OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL AND EASTERN LAKE COUNTY.
•  A WINTER STORM WARNING IS IN EFFECT UNTIL 11 AM MONDAY  ABOVE 2,500 FT. FOR THE SOUTH CENTRAL OREGON COAST, CENTRAL DOUGLAS COUNTY, AND THE EASTERN DOUGLAS COUNTY FOOTHILLS.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM MONDAY  ABOVE 1,000 FT. FOR THE SOUTH CENTRAL OREGON COAST, CENTRAL DOUGLAS COUNTY, AND THE EASTERN DOUGLAS COUNTY FOOTHILLS.
• A WINTER STORM WARNING IS IN EFFECT FROM 11 PM TONIGHT UNTIL 11 AM MONDAY ABOVE 2,000 FT. FOR THE SOUTH CENTRAL OREGON COAST,  CENTRAL DOUGLAS COUNTY, AND EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM MONDAY ABOVE 1,500 FT. FOR THE SOUTH CENTRAL OREGON COAST,  CENTRAL DOUGLAS COUNTY, AND EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON 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 5 AM MONDAY 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 UNTIL 5 AM MONDAY ABOVE 1,500 FT. FOR THE UPPER HOOD RIVER VALLEY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 2 AM MONDAY ABOVE 4,000 FT. FOR WALLOWA COUNTY.

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

• Mostly cloudy with evening rain and snow showers and a (30%) chance of thunderstorms, snow showers likely (70%) with a good (50%) chance of rain showers and a slight (20%) chance of thunderstorms late tonight (0.25 in. of rain possible, more in storms, 1 in. of snow possible, snow level 500 ft.),
• Mostly cloudy with AM showers likely (70%) and a (40%) chance of snow showers with a slight (20%) chance of thunderstorms (snow level 500 ft.), showers and a slight (20%) chance of thunderstorms and a bit warmer Monday afternoon (0.25 in. of rain possible, more in storms, small hail possible, 1 in. of snow possible), evening showers with a slight (20%) chance of thunderstorms, snow showers late Monday night (0.10 in. of rain possible, more in storms, snow level 1,000 ft.),
• Mostly cloudy with AM rain showers and snow showers with a slight (20%) chance of thunderstorms, showers with a slight (20%) chance of thunderstorms Tuesday afternoon (small hail possible, snow level 1,000 ft.), a good (50%) chance of showers late at night,
• Mostly cloudy and a bit warmer with a good (50%) chance of showers Wednesday, evening showers likely (70%), then rain likely (70%) Wednesday night.
• lows 32-39 highs 49-52.
• Mostly cloudy with rain and a bit warmer Thursday, rain Thursday night,
• Mostly cloudy and a bit warmer with rain likely (70%) Friday and in the evening, a slight (20%) chance of showers late at night,
• Mostly cloudy with a good (50%) chance of AM rain, a bit warmer with a slight (20%) chance of showers Saturday afternoon and in the evening, just mostly cloudy Saturday night.
• Then mostly cloudy and a bit warmer Sunday.
• highs 55-69 lows near 45. (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 rain showers and snow showers with a slight (20%) chance of thunderstorms tonight (0.10 in. of rain possible, 1-2 in. of snow possible lower elevations while 2-3 in. of snow possible above 1,500 ft., snow level 700 ft.),
• Mostly cloudy with rain showers and snow showers and a slight (20%) chance of thunderstorms Monday and in the evening (1 in. of snow possible lower elevations while 1-2 in,. of snow possible above 1,500 ft., snow level 500 ft. rising to 1,500 ft. in the afternoon), rain and snow showers late Monday night (1 in. of snow possible lower elevations while 1-2 in. of snow possible above 1,500 ft. snow level 1,500 ft. falling to 900 ft. late at night),
• Mostly cloudy and a bit warmer with rain showers and snow showers with a slight (20%) chance of thunderstorms Tuesday (snow level 900 ft. rising to 1,500 ft. in the afternoon), a good (50%) chance of rain and snow showers at night,
• Mostly cloudy with a good (50%) chance of AM rain and snow showers, a bit warmer with (40%) chance of rain Wednesday afternoon, then rain likely (70%) Wednesday night.
• lows 33-42 highs 46-52.
• Mostly cloudy with rain and a bit warmer Thursday, rain likely (70%) Thursday night,
• Mostly cloudy with rain likely (70%) and a bit warmer Friday, a (40%) chance of rain at night,
• Mostly cloudy and a bit warmer with a (30%) chance of showers Saturday, mostly cloudy Saturday night,
• Then mostly cloudy and a bit warmer Sunday.
• highs 56-72 lows near 48. (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 coastal showers and (40%) chance of thunderstorms tonight while inland showers, snow showers and a (30%) chance of thunderstorms tonight (0.25 in. of rain possible, 2-3 in. of snow possible, snow level 900 ft.),
• Mostly cloudy with AM coastal showers and a slight (20%) chance of thunderstorms and showers likely (70%) with a slight (20%) chance of thunderstorms Monday afternoon while inland AM showers and snow showers and a slight (20%) chance of thunderstorms with showers, snow showers likely (70%) and a slight (20%) chance of thunderstorms  Monday afternoon (snow level 900 ft. rising to 1,500 ft. in the afternoon),  a good (50%) chance of evening coastal showers with coastal showers likely (70%) late at night while a good (50%) chance of inland evening showers and snow showers with a slight (20%) chance of thunderstorms with inland rain and snow showers likely (70%) late Monday night (snow level 1,500 ft.),
• Mostly cloudy with AM coastal showers and a slight (20%) chance of thunderstorms and coastal showers likely (70%) and a bit warmer Tuesday afternoon while inland AM showers, snow showers and a slight (20%) chance of thunderstorms with inland showers likely (70%) and a (30%) chance of thunderstorms Tuesday afternoon (snow level 1,500 ft. rising to 2,000 ft.), a (40%) chance of 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, then rain likely (70%) Wednesday night.
• lows 35-42 highs 48-50.
• Mostly cloudy with rain and a bit warmer Thursday, rain Thursday night,
• Mostly cloudy and a bit warmer with rain likely (70%) Friday, a good (50%) chance of rain at night,
• Mostly cloudy with a (30%) chance of showers and a bit warmer Saturday, just mostly cloudy Saturday night,
• Then mostly cloudy and a bit warmer Sunday.
• highs 55-62 lows near 45. (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 snow showers and a slight (20%) chance of thunderstorms tonight (0.50 in. of rain possible, 5-9 in. of snow possible, small hail possible),
• Mostly cloudy with snow showers and a slight (20%) chance of thunderstorms and a bit cooler Monday afternoon and evening (0.25 in. of rain possible, 3-6 in. of snow possible, small hail possible), snow showers with a slight (20%) chance of thunderstorms late Monday night (0.50 in. of rain possible, 3-7 in. of snow possible),
• Mostly cloudy and a bit warmer with snow showers and a slight (20%) chance of thunderstorms Tuesday (small hail possible, snow possibly heavy at times), evening snow showers likely (70%), a good (50%) chance of snow showers late at night,
• A mix of clouds and sun with a good (50%) chance of showers and a bit warmer Wednesday afternoon, evening rain and snow showers likely (70%), then rain and snow likely (70%) late Wednesday night.
• snow level at the surface tonight, 1,500 ft. Monday afternoon, at the surface Monday night, 2,000 ft. Tuesday afternoon, 1,500 ft. Tuesday night, 2,500 ft. Wednesday, then 4,000 ft. Wednesday night.
• lows 17-27 highs 28-35.
• Mostly cloudy and a bit warmer with rain and snow Thursday, rain Thursday night,
• Mostly cloudy with rain Friday, a evening rain likely (70%), a slight (20%) chance of rain late at night,
• Clouds and sun with a (30%) chance of AM rain, a mix of clouds and sun and a bit warmer with a (40%) chance of showers Saturday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Saturday night,
• Then a mix of clouds and sun Sunday.
• snow level 5,500 ft. Thursday, 6,000 ft. Thursday night, 5,000 ft. Friday, 6,500 ft. Friday night,  7,000 ft. Saturday, 7,500 ft. Saturday night, then free air freezing level 11,000 ft. Sunday.
• highs 39-52 lows near 32.

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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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