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 activity approaching Oregon.  The graphics for days 3-7 show more complex frontal activity moving our way Friday through next Tuesday giving us chances of getting wet.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 18 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 53 in the Moderate 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)

NOTE: Outdoor burning remains temporarily prohibited for the following areas: Eugene-Springfield (Always), Florence (Always), Lowell, Oakridge and UGB, and Springfield and UGB.

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ADVISORIES:

• A WINTER STORM WARNING IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE CASCADE FOOTHILLS IN LANE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 6 PM THIS EVENING FOR THE COAST RANGE OF NORTHWEST OREGON,  THE NORTHERN OREGON CASCADE FOOTHILLS,
• A WINTER STORM WARNING IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE CENTRAL COAST OF WESTERN OREGON.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY ABOVE 1,500 FT. FOR CENTRAL DOUGLAS COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM WEDNESDAY ABOVE 1,500 FT. FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM WEDNESDAY BELOW 1,500 FT.FOR CENTRAL DOUGLAS COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE EAST SLOPES OF THE OREGON CASCADES.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM WEDNESDAY ABOVE 1,000 FT. FOR THE SOUTH CENTRAL OREGON COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM WEDNESDAY ABOVE 1,000 FT. FOR THE SOUTH CENTRAL OREGON COAST.
• A FREEZE WARNING IS IN EFFECT FROM FROM 1 AM UNTIL 9 AM WEDNESDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.

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

• Mostly cloudy with evening snow and rain showers, mostly cloudy with patchy fog late tonight (under 0.10 in. of rain possible).
• Patchy AM fog, a mix of clouds and sun and a bit warmer Wednesday afternoon, increasing clouds with snow and rain late Wednesday night (under 0.10 in. of rain possible, snow level 500 ft. late at night),
• Mostly cloudy with AM snow likely (70%) (snow level 1,000 ft.), rain Thursday afternoon (0.10 in. of rain possible), evening rain,  rain and snow likely (70%) late Thursday night (snow level 1,000 ft.),
• Mostly cloudy with AM snow likely (70%), rain likely (70%) and a bit cooler (snow level 1,000 ft.), a mix of clouds and sun and a bit warmer with a good (50 %) chance of rain Friday afternoon Friday afternoon (snow level 1,000 ft.), a good (50%) chance of evening rain, then rain and snow likely (70%) late Friday night (snow level 1,500 ft.).
• lows 28-32 highs 45-43 warming to 46 Friday.
• Mostly cloudy with AM snow likely (70%), rain and a bit cooler Saturday afternoon (snow level 1,000 ft.), evening rain and snow, a (0%) chance of snow late Saturday night (snow level 1,000 ft.),
• Mostly cloudy with a good (50%) chance of AM snow, rain likely (70%) and a bit warmer Sunday afternoon (snow level 1,000 ft.), a good (50%) chance of evening rain, a good (50%) chance of snow late at night (snow level 1,000 ft.),
• Mostly cloudy with a good (50%) chance of AM snow, a mix of clouds and sun and a bit warmer with a good (50%) chance of rain Monday afternoon, a (40%) chance of evening rain, partly cloudy with a slight (20%) chance of snow late Monday night (snow level 1,000 ft.),
• Partly cloudy with a slight (20%) chance of AM snow, then a mix of clouds and sun with a good (50%) chance of rain Tuesday afternoon (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:

• Mostly cloudy with evening snow and rain showers with a slight (20%) chance of thunderstorms, a good (50%) chance of showers late tonight (under 0.10 in. of rain possible, 1 in. of snow possible lower elevations while 1-2 in. of snow possible above 1,500 ft., snow level 100 ft.),
• Mostly cloudy start, partly cloudy Wednesday afternoon, partly cloudy in the evening,  becoming mostly cloudy with a good (50%) chance of snow late Wednesday night (under 0.10 in. of rain possible),
• Mostly cloudy with rain and snow Thursday (under 0.10 in. of rain possible, snow level 300 ft. rising to 2,000 ft. in the afternoon), evening rain and snow, rain and snow likely (70%) late at night (0.10 in. of rain possible, snow level 1,500 ft. falling to 900 ft. late at night),
• Mostly cloudy and a bit warmer with rain likely (70%) Friday, then rain and snow likely (70%) Friday night.
• lows 27-32 highs 44-46.
• Mostly cloudy and a bit cooler with rain and snow Saturday, rain and snow  Saturday night),
• Mostly cloudy with rain and a bit warmer Sunday, a good (50%) chance of rain and snow at night,
• Mostly cloudy with a good (50%) chance of rain and snow and a bit warmer Monday, a (40%) chance of rain and snow Monday night,
• Mostly cloudy with a (50%) chance of rain and snow Tuesday.
• highs 44-48 lows near 29. (seasonal averages high 56 low 38)

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

• Mostly cloudy with evening coastal rain and snow showers with a slight (20%) chance of thunderstorms and  coastal showers and snow showers and a slight (20%) chance of thunderstorms late tonight while inland evening rain and snow showers with inland widespread frost with snow showers and a slight (20%) chance of thunderstorms late tonight, (0.10 in. of rain possible, 1 in. of snow below 1,000 ft. while 1-2 in. of snow above 1,000 ft.,snow level 300 ft.),
• Partly cloudy with widespread AM frost, partly cloudy and a bit warmer Wednesday afternoon, partly cloudy with areas of evening coastal frost, rain likely (70%) late at night while widespread inland evening frost and a slight (20%) chance of inland rain and snow late Wednesday night,
• Mostly cloudy with coastal rain Thursday while inland AM rain and snow and inland rain Thursday afternoon (0.10 in. of rain possible, snow level 1,000 ft.rising to 2,000 ft.), coastal rain likely (70%) Thursday night while inland evening rain and snow likely (70%) and a good (50%) chance of inland rain and snow late at night (0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of AM rain and snow, a good (50%) chance of rain Friday afternoon, a good (50%) chance of evening rain and snow showers, then rain and snow late Friday night.
• lows 29-36 highs near 48.
• Mostly cloudy and a bit cooler with rain and snow showers and breezy Saturday and at night,
• Mostly cloudy and a bit warmer with rain and snow showers Sunday, rain and snow showers likely (70%) at night,
• AM rain and snow likely (70%), rain likely (70%) and a bit warmer Monday afternoon, a good (50%) chance of rain and snow Monday night,
• Mostly cloudy with a good (50%) chance of AM rain and snow, then rain likely (70%) Tuesday afternoon.
• highs 46-48 lows 33-35. (seasonal averages high 55 low 41)

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

• Mostly cloudy with evening show showers, a good (50%) chance of snow showers late tonight (1-2 in. of snow possible),
• Partly cloudy and a bit warmer Wednesday, partly cloudy in the evening, mostly cloudy with a good (50%) chance of snow late Wednesday night,
• Mostly cloudy with snow and a bit warmer Thursday, snow at night,
• Mostly cloudy and a bit cooler with a snow likely (70%) Friday, partly cloudy with a good (50%) chance of evening snow, then mostly cloudy with snow likely (70%) Friday night.
• snow level at the surface tonight, free air freezing level at the surface. Wednesday and Wednesday evening, snow level 2,500 ft. Thursday evening, then at the surface Friday and Friday night.
• lows 12-18 highs 28-30 cooling Saturday,
• Mostly cloudy with snow Saturday and Saturday night,
• Mostly cloudy and a bit warmer with snow Sunday, evening snow likely (70%), snow late at night,
• Mostly cloudy and a bit warmer with snow likely (70%) Monday, a good (50%) chance of evening snow, partly cloudy with a good (50%) chance of snow late Monday night,
• Then a mix of clouds and sun and a bit cooler with a good (50%) chance of snow Tuesday.
• snow level 1,000 ft. Saturday, then at the surface Saturday night through Tuesday.
• highs 28-32 cooling to 30 Tuesday 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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