Here is my weekly weather quiz question for the last time. What is the “Ionosphere? Here is the correct answer. The Ionosphere is a complex atmospheric zone of ionized gases that extends between 50 and 400 miles (80 to 640 kilometers) above the earth’s surface. It is located between the mesosphere and the exosphere and is included as part of the thermosphere.

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The Jet Stream is sending a strong stream of moisture through the Pacific Northwest. The graphics for days 1-3 show the frontal activity trying to move through Oregon.  The graphics for days 3-7 show more complex frontal activity moving our way Tuesday through next Saturday giving us chances of getting wet.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 17 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 10 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 UNTIL NOON TODAY FOR THE LOWER COLUMBIA.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM UNTIL 4 PM TODAY FOR THE WESTERN COLUMBIA RIVER GORGE.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM UNTIL NOON TODAY FOR THE GREATER PORTLAND METRO AREA.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM TODAY FOR THE NORTHERN OREGON CASCADE FOOTHILLS.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM UNTIL 10 PM TODAY FOR THE CASCADE FOOTHILLS IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM UNTIL 10 PM TODAY FOR THE UPPER HOOD RIVER VALLEY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM TODAY UNTIL 4 PM SUNDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM SATURDAY UNTIL 4 PM SUNDAY ABOVE 1,000 FT. FOR CENTRAL DOUGLAS COUNTY AND THE EASTERN DOUGLAS COUNTY FOOTHILLS.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM TODAY UNTIL 1 PM SUNDAY ABOVE 1,000 FT.  FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM TODAY UNTIL 4 PM SUNDAY FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT FROM 4 AM TODAY UNTIL 4 PM SUNDAY ABOVE 1,500 FT. FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY FOR THE CENTRAL COAST RANGE OF NORTHWESTERN OREGON.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM TODAY UNTIL 4 PM SUNDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.

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

• Mostly cloudy with AM rain and snow (snow level 1,000 ft.), showers likely (70%) with a slight (20%) chance of thunderstorms and a bit cooler this afternoon (0.25 in. of rain possible, 1 in. of snow possible), evening train and showers likely (70%) with a slight(20%) chance of thunderstorms, a good (50%) chance of rain and snow late tonight (0.10 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft. falling to 500 ft. late tonight),
• Mostly cloudy with AM rain and a good (50%) chance of snow, rain and a bit warmer Sunday afternoon (under 0.10 in. of rain possible, little or no snow accumulation expected),  a good (50%) chance of evening rain and a slight (20%) chance of snow, a slight (20%) chance of snow late at night (under 0.10 in. of rain possible, little or no snow accumulation expected, snow level 1,500 ft. falling to 500 ft. late at night),
• Mostly cloudy with AM rain likely (70%) and a slight (20%) chance of  snow (snow level 500 ft.), rain likely (70%) and a bit warmer Monday afternoon, evening rain likely (70%) with a (40%) chance of snow, then a good (50%) chance of rain and snow late Monday night (snow level 1,500 ft. falling to 1,000 ft. late at night).
• highs 44-47 lows 28-32.
• Mostly cloudy with a good (50%) chance of AM rain and snow (snow level 1,000 ft.), rain likely (70%) and a bit cooler Tuesday afternoon, a good (50%) chance of rain and snow late Tuesday night (snow level 1,500 ft. falling to 500 ft. late at night),
• Clouds and sun with a good (50%) chance of AM rain and snow (snow level 500 ft.), a mix of clouds and sun with a good (50%) chance of rain Wednesday afternoon, partly cloudy with a (40%) chance of evening rain, mostly cloudy with a slight (20%) chance of rain and snow late Wednesday night (snow level 1,000 ft. late at night).
• Mostly cloudy with a good (50%) chance of AM rain and snow (snow level 1,000 ft.), rain likely (70%) and a bit warmer Thursday afternoon and Thursday night,
• Then rain likely (70%) and a bit warmer Friday.
• highs 45-50 lows 30-36 (seasonal averages high 55 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 and a bit cooler with showers and snow showers with a slight (20%) chance of thunderstorms today (0.25 in. of rain possible, 1-2 in. of snow possible lower elevations while 3-5 in. of snow possible above 1,500 ft., snow level 700 ft. rising to 1,500 ft. this afternoon), evening rain and snow with a slight (20%) chance of thunderstorms, snow likely (70%) 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.).
• Mostly cloudy with a good (50%) chance of AM rain and snow and a slight (20%) chance of thunderstorms, rain snow and a slight (20%) chance of thunderstorms Sunday afternoon (under 0.10 in. of rain possible), a good (50%) chance of evening rain and snow, a good (50%) chance of snow showers late Sunday night (under 0.10 in. of rain possible),
• Mostly cloudy with rain and snow showers likely (70%) and a bit warmer Monday, then rain and snow showers likely (70%) late Monday night.
• highs 44-47 lows 26-33.
• Mostly cloudy and a bit cooler with rain and snow showers likely (70%) Tuesday,  a (40%) chance of rain and snow  showers Tuesday night,
• Mostly cloudy and a bit warmer with a good (50%) chance of rain and snow showers Wednesday, a (30%) chance of rain and snow showers at night,
• Mostly cloudy with a good (50%) chance of AM rain and snow showers, showers likely (70%) and a bit warmer Thursday afternoon and Thursday night,
• Then mostly cloudy and a bit warmer with showers likely (70%) Friday.
• highs 45-53 lows 32-39. (seasonal averages high 57 low 39)

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

• Mostly cloudy and a bit cooler with coastal showers and a (40%) chance of thunderstorms while inland snow showers with a (40%) chance of thunderstorms and a bit cooler today (0.50 in. of rain possible, 1-2 in. of snow possible, snow level 1,000 ft. rising to 1,500 ft. this afternoon), coastal showers with a slight (20%) chance of thunderstorms tonight while inland evening rain and snow and a slight (20%) chance of thunderstorms, inland showers and snow likely (70%) and a slight (20%) chance of thunderstorms late tonight (0.10 in. of rain possible, 1-2 in. of snow possible, snow level 600 ft.),
• Mostly cloudy and a bit warmer with coastal showers, snow and a slight (20%) chance of thunderstorms Sunday afternoon (0.10 in. of rain possible), evening coastal showers likely (70%) with a slight (20%) chance of thunderstorms with coastal showers and showers, snow likely (70%) with a slight (20%) chance of thunderstorms late at night while a good (50%) chance of inland rain and snow with a (40%) chance of rain and snow showers late at night (under 0.10 in. of rain possible),
• Mostly cloudy with rain showers and snow showers and a slight (20%) chance of thunderstorms and a bit warmer Monday and Monday night.
• highs 45-48 lows 35-32.
• Mostly cloudy with rain showers and snow showers likely (70%) and a slight (20%) chance of thunderstorms and a bit cooler Tuesday and in the evening, a good (50%) chance of rain showers and snow showers with a slight (20%) chance of thunderstorms Tuesday night,
• Mostly cloudy with a good (50%) chance of AM rain and snow showers, rain and snow showers likely (70%) and a bit warmer Wednesday afternoon, a (30%) chance of rain and snow showers at night,
• Mostly cloudy with showers likely (70%) and a bit warmer Thursday and Thursday night,
• Then mostly cloudy and a bit warmer with showers likely (70%) Friday.
• highs 46-53 lows 32-37. (seasonal averages high 55 low 41)

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

• Mostly cloudy and a bit cooler with snow today (3-6 in. of snow possible) and breezy (Wind: SW 15-25 mph AM gusts to 35 mph), snow tonight (1-2 in. of snow possible),
• Mostly cloudy with snow Sunday (1-2 in. of snow possible), a good (50%) chance of snow Sunday night (1 in. of snow possible),
• Mostly cloudy with snow and a bit warmer Monday  (1 in. of snow possible), then a good (50%) chance of snow late Monday night.
• snow level 1,500 ft. this afternoon, at the surface tonight through Sunday night, then 1,500 ft. Monday afternoon and Monday evening.
• highs 27-29 lows 13-16.
• Mostly cloudy with snow Tuesday and in the evening, a good (50%) chance of snow late Tuesday night,
• Mostly cloudy with snow likely (70%) Wednesday, a good (50%) chance of snow at night,
• Mostly cloudy with a good (50%) chance of AM snow, rain and snow likely (70%) and a bit warmer Thursday, rain and snow likely (70%) Thursday night,
• Then mostly cloudy and a bit warmer with rain likely (70%) Friday.
• snow level 1,500 ft. Tuesday afternoon, at the surface Tuesday night, 1,500 ft. Wednesday afternoon and Wednesday night, 3,000 ft. Thursday afternoon, 3,500 ft. rising to 4,000 ft. late Thursday night, then 4,500 ft. rising to 5,000 ft. Friday afternoon.
• highs 29-39 lows 15-25.

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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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