Here is my weekly weather quiz question. What are “Iridescent Clouds?

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An Upper Level Low Pressure Trough (“U” shape) has not moved so it’s still keeping us with the rain-snow chances. The graphics for days 1-3 show the next frontal system headed toward Oregon tonight.  The graphics for days 3-7 show more complex frontal systems moving our way Sunday through next Thursday giving us chances of getting wet.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 11 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 13 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

NOTE: Outdoor burning season has now officially opened. The ban has been lifted.

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ADVISORIES:

• A WINTER STORM WARNING IS IN EFFECT UNTIL MIDNIGHT TONIGHT FOR THE COAST RANGE OF NORTHWEST OREGON.
• A WINTER STORM WARNING IS IN EFFECT 4 PM TODAY UNTIL 10 PM FRIDAY ABOVE 3,000 FT. FOR THE NORTHERN OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT  UNTIL 10 PM FRIDAY ABOVE 3,500 FT. FOR THE CASCADES IN LANE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM FRIDAY FOR THE SOUTH CENTRAL OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM FRIDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM FRIDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• *A WINTER STORM WARNING IS IN EFFECT FROM 10 PM TONIGHT UNTIL 10 PM FRIDAY ABOVE 4,500 FT. FOR THE NORTHERN BLUE MOUNTAINS OF OREGON AND THE NORTHWEST BLUE MOUNTAINS.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM FRIDAY FOR , THE SISKIYOU MOUNTAINS AND THE SOUTH OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 10 PM FRIDAY ABOVE 4,500 FT. FOR THE OCHOCO AND THE JOHN DAY HIGHLANDS.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 10 PM FRIDAY ABOVE 4,000 FT. FOR THE EAST SLOPES OF THE OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 11 AM MST FRIDAY FOR HARNEY COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM MST FRIDAY  FOR BAKER COUNTY AND MALHEUR COUNTY.
• WINTER WEATHER ADVISORY IS IN EFFECT FROM 7 PM TONIGHT UNTIL 10 PM FRIDAY ABOVE 4,500 FT. FOR THE SOUTHERN BLUE MOUNTAINS  OF OREGON.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM TONIGHT UNTIL 4 PM FRIDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
• A WIND ADVISORY IS IN EFFECT IS IN EFFECT UNTIL 5 PM MST FRIDAY FOR THE OREGON LOWER TREASURE VALLEY.
• A WIND ADVISORY IS IN EFFECT UNTIL 4 AM FRIDAY FOR LADD AND PYLES CANYONS IN THE GRANDE RONDE VALLEY.
• A WIND ADVISORY IS IN EFFECT UNTIL 4 PM FRIDAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON.
• A WIND ADVISORY IS IN EFFECT UNTIL 7 PM FRIDAY FOR JACKSON COUNTY.

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

• Mostly cloudy with rain tonight (0.50 in. of rain possible),
• Mostly cloudy and a bit cooler with rain Friday (0.25 in. of rain possible), a good (50%) chance of rain Friday night (under 0.10 in. of rain possible),
• Partly cloudy and a bit warmer with a slight (20%) chance of rain Saturday (under 0.10 in. of rain possible), partly cloudy with a good (50%) chance of evening rain, mostly cloudy with rain likely (70%) late at night (under 0.10 in. of rain possible),
• Then mostly cloudy with rain Sunday and Sunday night,
• lows 34-32 warming to 45 Sunday night highs 46-53.
• Mostly cloudy with rain and a bit warmer Monday, rain Monday night,
• Mostly cloudy and a bit cooler with rain likely (70%) Tuesday, mostly cloudy with a good (50%) chance of rain at night,
• A mix of clouds and sun and a bit warmer with a good (50%) chance of rain Wednesday, partly cloudy with a (40%) chance of rain Wednesday night,
• Then a mix of clouds and sun and a bit warmer with a (40%) chance of rain Thursday.
• highs  54-49 warming to 53 Thursday lows 36-33. (seasonal averages high 56 low 37)

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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 (LRAPAz

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Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy with evening showers, showers, snow showers and a slight (20%) chance of thunderstorms late tonight (0.50 in. of rain possible, 1 in. of snow possible, snow level 3,000 ft. falling to 2,000 ft. late tonight),
• Mostly cloudy with AM showers and snow showers and a slight (20%) chance of thunderstorms, rain and snow showers and a bit cooler Friday afternoon (0.50 in. of rain possible, 1-2 in. of snow possible, snow level 1,500 ft. rising to 2,500 ft.), a (30%) chance of rain and snow showers Friday night (0.10 in. of rain possible, snow level 2,000 ft.),
• Partly cloudy with a slight (20%) chance of AM rain and snow showers, mostly cloudy and a bit warmer with a (30%) chance of rain and snow showers a bit warmer Saturday afternoon, a (40%) chance of evening showers, showers late at night,
• Mostly cloudy and a bit cooler with showers Sunday (Daylight Saving time starts 2 am), then showers Sunday night.
• lows 37-46 highs 48-55 cooling to 53 Sunday.
• Mostly cloudy with showers Monday and in the evening, a good (50%) chance of showers late Monday night,
• Mostly cloudy with a good (50%) of AM rain and snow showers, a good (50%) chance of showers Tuesday afternoon, a (30%) chance of rain and snow showers at night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow showers, a slight (20%) chance of showers and a bit warmer Wednesday afternoon and Wednesday night,
• Partly cloudy with a slight (20%) chance of showers Thursday.
• highs near 53 lows 39-35. (seasonal averages high 58 low 39)

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

• Mostly cloudy with evening showers, showers with a slight (20%) chance of thunderstorms late tonight (0.50 in. of rain possible, snow level 2,000 ft. late tonight) and breezy (Wind: S 15-25 mph),
• Mostly cloudy with AM coastal showers and a slight (20%) chance of thunderstorms while inland showers and snow showers with a slight (20%) chance of thunderstorms (AM snow level 2,000 ft., no snow accumulation expected), showers and a bit warmer Friday afternoon (under 0.10 in. of rain possible), evening showers likely (70%), a (30%) chance of coastal showers late Friday night while a slight (20%) chance of inland rain and snow showers late Friday night (0.10 in. of rain possible, snow level 2,000 ft.),
• Mostly cloudy and a bit warmer with a (30%) chance of coastal showers Saturday while partly cloudy with a (30%) chance of inland showers Saturday, a good (50%) chance of evening showers, showers late at night,
• Mostly cloudy with showers and a bit warmer Sunday (Daylight Saving time starts 2 am), then showers Sunday night.
• lows 38-32 warming to 43 Sunday night highs 49-54.
• Mostly cloudy with showers and a bit cooler Monday and in the evening, a good (50%) chance of showers Monday night,
• Mostly cloudy with a good (50%) chance of showers and a bit cooler Tuesday and at night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of showers Wednesday and Wednesday night,
• Then mostly cloudy with a (30%) chance of showers Thursday.
• highs near 52 lows 37-35. (seasonal averages high 55 low 42)

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

• Mostly cloudy with evening rain and snow late tonight (4-8 in. of snow possible, snow possibly heavy at times) and breezy (Pass Wind: S 15-25 mph gusts to 45 mph decreasing to 35 mph late at night),
• Mostly cloudy and a bit cooler with snow Friday (3-6 in. of snow possible) and blustery (Pass Wind: SW 15-25 mph gusts to 50 mph), snow Friday night (1-3 in. of snow possible),
• Partly cloudy with a slight (20%) chance of AM snow, a good (50%) chance of snow and a slight (20%) chance of rain and warmer Saturday afternoon, a good (50%) chance of evening snow and rain, rain late at night,
• Mostly cloudy and a bit warmer with rain and snow Sunday (Daylight Saving time starts 2 am), then rain and snow Sunday night.
• snow level 4,000 ft. falling to 2,500 ft. late tonight, 1,500 ft. rising to 2,500 ft. Friday afternoon,  2,000 ft. Friday night, 1,500 ft. rising to 3,000 ft. Saturday afternoon, 3,500 ft. Saturday night, 5,000 ft. Sunday, then 5,500 ft. Sunday night.
• lows 20-16 warming to 33 Sunday night highs 28-39.
• Mostly cloudy with rain and snow Monday, rain and snow Monday night,
• Mostly cloudy with AM snow likely (70%), a bit cooler with rain and snow likely (70%) Tuesday afternoon, a good (50%) chance of evening rain and snow, a good (50%) chance of snow late at night,
• Mostly cloudy with a good (50%) chance of snow and rain and a bit warmer Wednesday and in the evening, partly cloudy with a (%) chance of snow Wednesday night,
• Then a mix of clouds and sun and a bit warmer with good (50%) chance of snow and rain Thursday.
• snow level 5,000 ft. Monday, 3,500 ft. Monday night, 2,500 ft. Tuesday, 3,000 ft. Tuesday night through Wednesday night, then 3,500 ft. Thursday.
• highs 39-33 warming to 38 Thursday lows near 22.

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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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