Here is my weekly weather quiz question. What is the “Ionosphere?

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An Upper Level Low Pressure Trough (“U “shape) is slowly moving southward over the Pacific Northwest. The graphics for days 1-3 show the frontal that moved through Oregon.  The graphics for days 3-7 show more complex frontal activity moving our way Saturday through next Wednesday giving us chances of getting wet.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 14 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 12 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)

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

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ADVISORIES:

• A WINTER WEATHER ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL 1 PM THURSDAY ABOVE 700 FT. FOR THE LOWER COLUMBIA.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL 11 AM THURSDAY ABOVE 1,500 FT. FOR THE COAST RANGE OF NORTHWEST OREGON.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 5 AM UNTIL 7 PM THURSDAY ABOVE 1,500 FT. FOR THE NORTHERN OREGON CASCADE FOOTHILLS AND THE NORTHERN OREGON CASCADES.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM THURSDAY UNTIL 7 AM FRIDAY FOR THE NORTHERN BLUE MOUNTAINS OF OREGON AND THE AND THE NORTHWEST BLUE MOUNTAINS.
• A WINTER STORM WATCH IS IN EFFECT FROM FROM LATE FRIDAY NIGHT THROUGH LATE SATURDAY NIGHT FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY.

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

• Mostly cloudy with a slight (20%) chance of rain and snow late tonight (under 0.10 in. of rain possible, snow level 1,000 ft.),
• Mostly cloudy with AM rain and a good (50%) chance of snow (snow level 1,000 ft.), rain likely (70%) and a bit cooler Thursday afternoon (0.10 in. of rain possible, snow level 1,500 ft.), evening showers likely (70%),  rain and snow showers likely (70%) late Thursday night (under 0.10 in. of rain possible, snow level 1,000 ft.),
• Mostly cloudy with rain and snow showers Friday (snow level 1,000 ft.), evening rain likely (70%), rain and snow late Friday night (snow level 1,000 ft.),
• Mostly cloudy with AM rain and snow, rain Saturday afternoon (snow level 1,000 ft.), evening snow and rain showers, then a good (50%) chance of snow late Saturday night (snow level 500 ft.).
• lows 29-32 highs 45-43 warming to 46 Friday.
• Mostly cloudy with rain and snow showers likely (70%) Sunday (snow level 500 ft.), a good (50%) chance of rain and snow showers late Sunday night (snow level 1,000 ft.),
• A mix of clouds and sun and a bit warmer with a good (50%) chance of rain and snow showers Monday, partly cloudy with  a (40%) chance of evening rain and snow showers, mostly cloudy with a (40%) chance of rain and snow showers late Monday night (snow level 1,000 ft.),
• A mix of clouds and sun with a good (50%) chance of rain and snow showers Tuesday (snow level 500 ft.),  mostly cloudy with a (40%) chance of rain and snow showers Tuesday night,
• Then a mix of clouds and sun and a bit cooler with a (40%) chance of rain and snow showers Wednesday (snow level 1,000 ft.).
• highs 43-47 lows near 29 (seasonal averages high 54 low 36)

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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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Forecast for the Umpqua Valley including Roseburg:

• Cloudy with rain and snow late tonight (under 0.10 in. of rain possible),
• Cloudy and a bit cooler with rain and snow Thursday (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft. rising to 2,000 ft. in the afternoon), evening rain and snow likely (70%), a good (50%) chance of rain and snow late Thursday night (0.10 in. of rain possible, 1 inch of snow above 1,500 ft., snow level 1,500 ft. falling to 900 ft. late at night),
• Mostly cloudy and a bit warmer with (40%) chance of rain and snow Friday (snow level 600 ft. rising to 1,5oo ft. Friday afternoon), a (30%) chance of rain and snow late at night (snow level 800 ft.),
• Mostly cloudy with rain and snow Saturday, then rain and snow  Saturday night.
• lows 32-30 warming to 32 Saturday night highs 44-46.
• Mostly cloudy with AM rain and snow likely (70%), rain and snow and a bit warmer Sunday afternoon, a good (50%) chance of rain and snow Sunday night,
• Mostly cloudy with a good (50%) chance of rain and snow and a bit warmer Monday, a (40%) chance of rain and snow at night,
• Mostly cloudy with a (50%) chance of rain and snow Tuesday and Tuesday night,
• Then mostly cloudy with a (30%) chance of rain and snow Wednesday.
• highs near 48 lows near 30. (seasonal averages high 57 low 38)

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

• Partly cloudy with areas of widespread evening frost, mostly cloudy with coastal rain likely (70%) late tonight while mostly cloudy inland inland with a good (50%) chance of rain and snow late tonight,
• Mostly cloudy and slightly cooler with rain Thursday (0.10 in. of rain possible, snow level 2,000 ft.), coastal rain likely (70%) Thursday night while inland rain and snow likely (70%) Thursday night (0.10 in. of rain possible, snow level 2,000 ft. falling t0 1,500 ft. late at night),
• Mostly cloudy with coastal rain likely (70%) Friday with a (40%) chance of rain and snow inland (snow level 1,500 ft.), evening coastal rain likely (70%) with showers and a slight (20%) chance of thunderstorms late at night while a (40%) chance of evening inland rain and snow with inland rain and snow late at night,
• Mostly cloudy with AM showers and snow showers (snow possibly heavy at times) and a slight (20%) chance of thunderstorms, a bit cooler with showers and a slight (20%) chance of thunderstorms Saturday afternoon, and evening, then rain and snow late Saturday night.
• lows 33-37 cooling to 32 Saturday night highs near 46.
• Mostly cloudy with AM and a bit warmer with rain and snow showers Sunday, rain and snow showers likely (70%) at night,
• Mostly cloudy with AM rain and snow likely (70%), rain likely (70%) Monday afternoon, a good (50%) chance of rain and snow Monday night,
• Mostly cloudy with a good (50%) chance of rain and snow Tuesday, a good (50%) chance of rain and snow Tuesday night,
• Then mostly cloudy with a (40%) chance of rain and snow Wednesday.
• highs near 48 lows 32-30. (seasonal averages high 55 low 41)

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

• Partly cloudy this evening, mostly cloudy with a slight (20%) chance of snow late tonight,
• Mostly cloudy with snow (possibly heavy at times) and a bit cooler Thursday afternoon (3-6 in. of snow possible, snow level 2,000 ft.), snow showers Thursday night (1-3 in. of snow possible),
• Mostly cloudy and a bit cooler with snow showers likely (70%) Friday, a good (50%) chance of evening snow, mostly cloudy with snow late at night,
• Mostly cloudy with snow and a bit warmer Saturday, then snow showers Saturday night.
• free air freezing level at the surface this evening, snow level 2,000 ft. Thursday, at the surface Thursday night, 1,500 ft. Friday afternoon, then at the surface Friday night through Saturday night.
• lows 15-18 cooling to 15 Friday night and Saturday night highs 30-28 warming back to 30 Saturday.
• Mostly cloudy and a bit cooler with snow showers Sunday, evening snow showers likely (70%), a good (50%) chance of snow late Sunday night,
• Mostly cloudy and a bit warmer with snow showers likely (70%) Monday, a good (50%) chance of evening snow showers, partly cloudy with a slight (20%) chance of snow showers late at night,
• Clouds and sun with a slight (20%) chance of AM snow showers, a mix of clouds and sun and a bit cooler with a good (50%) chance of snow showers Tuesday afternoon, partly cloudy with a good (50%) chance of snow showers late Tuesday night,
• Then a mix of clouds and sun and a bit warmer with a good (50%) chance of snow showers Wednesday.
• highs 32-30 warming back to 32 Wednesday lows near 15.

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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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