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

_________________

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.

________________

Air Quality Index:

Eugene/Springfield: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 17 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 remains temporarily prohibited for the following areas: Eugene-Springfield (Always), Florence (Always), Lowell, Oakridge and UGB, and Springfield and UGB.

________________

ADVISORIES:

• A WINTER STORM WARNING IS IN EFFECT UNTIL 10 AM TODAY FOR THE CASCADE FOOTHILLS IN LANE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 10 AM TODAY FOR THE COAST RANGE OF NORTHWEST OREGON,  THE NORTHERN OREGON CASCADE FOOTHILLS, AND THE WESTERN COLUMBIA RIVER GORGE.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 10 AM TODAY FOR THE CENTRAL COAST OF WESTERN OREGON.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 6 AM TODAY FOR THE GREATER PORTLAND METRO AREA.A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM TODAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND  THE SOUTHERN OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY ABOVE 1,500 FT. FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS AND CENTRAL DOUGLAS COUNTY.
• *A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE SOUTH WILLAMETTE VALLEY
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM TODAY FOR THE UPPER HOOD RIVER VALLEY AND THE CENTRAL COLUMBIA RIVER GORGE.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY ABOVE 1,500 FT. FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY ABOVE 1,500 FT. FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY BELOW 1,500 FT. FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 10 AM TODAY BELOW 2,000 FT. FOR JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4PM TODAY ABOVE 2,000 FT. FOR JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE LOWER COLUMBIA.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE NORTH OREGON COAST.
• A FREEZE WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING 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 a good (50%) chance of evening rain and snow showers, partly 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 showers at night (snow level 500 ft. late at night),
• Mostly cloudy with AM rain and snow showers (snow level 1,000 ft.), rain Thursday afternoon, mostly cloudy with evening showers likely (70%) and a (30%) chance of snow showers, good (50%) chance of showers and snow showers late  Thursday night (snow level 1,000 ft.),
• Mostly cloudy with a good (50%) chance of AM showers and snow showers, a (0%) chance of showers  (snow level 1,000 ft.), a mix of clouds and sun and a bit warmer with a good (50 %) chance of rain Friday afternoon (snow level 1,000 ft.), evening rain and snow showers, then rain and snow showers likely (70%) late Friday night (snow level 1,500 ft.).
• lows 23-30 highs 40-44.
• Mostly cloudy with AM showers and snow snow showers, showers Saturday afternoon (snow level 1,500 ft.), evening showers and a (40%) chance of snow showers, a good (50%) chance of snow showers late at night,
• Mostly cloudy with a good (50%) chance of AM snow showers, showers likely (70%) and a bit warmer Sunday afternoon (snow level 1,000 ft.), a good (50%) chance of rain and snow showers Sunday night (snow level 1,000 ft.),
• AM clouds and sun with a (40%) chance of snow showers, a mix of clouds and sun with a good (50%) chance of showers Monday afternoon,
• highs 44-46 lows 32-27 (seasonal averages high 54 low 36)

__________

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)

__________

Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy with evening snow showers with a slight (20%) chance of thunderstorms, a good (50%) chance of snow late tonight,
• Mostly cloudy Wednesday, partly cloudy in the evening, mostly cloudy with a (%) chance of snow showers Wednesday night,
• Mostly cloudy with rain and snow showers Thursday, evening rain and snow showers likely (70%), a slight (20%) chance of rain and snow showers late Thursday night,
• Mostly cloudy with rain and snow showers and a bit warmer Friday, a good (50%) chance of evening rain and snow showers, then rain and snow showers likely (70%) late Friday night.
• lows 33-27 highs near 44.
• Mostly cloudy with rain and snow showers and a bit cooler Saturday and in the evening, rain and snow showers likely (70%)  at night,
• Mostly cloudy with AM rain and snow showers likely (70%), rain and snow showers and a bit warmer Sunday afternoon, a good (50%) chance of rain and snow showers Sunday night,
• Mostly cloudy and a bit warmer with a good (50%) chance of rain and snow showers Monday,
• highs 47-45 warming to 48 Monday lows 33-29. (seasonal averages high 56 low 38)

___________

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

• Mostly cloudy with evening showers and snow showers with a slight (20%) chance of thunderstorms, a good (50%) chance of coastal showers and snow showers and a slight (20%) chance of thunderstorms late tonight while a good (50%) chance of inland snow showers with a slight (20%) chance of thunderstorms late tonight, widespread frost late (1 in. of snow below 1,000 ft. while 1-2 in. of snow above 1,000 ft. ,snow level 400 ft.),
• Partly cloudy with a slight (20%) chance of AM coastal showers and a slight (20%) chance of coastal showers and a bit warmer Wednesday afternoon while rain and snow showers, just partly cloudy and a bit warmer Wednesday afternoon, partly cloudy in the evening with a slight (20%) chance of coastal showers and widespread frost late at night while a slight (20%) chance of inland rain and snow showers with widespread frost late at night,
• Mostly cloudy with AM rain and snow showers, showers Thursday afternoon, widespread frost with a good (50%) chance of rain and snow showers late Thursday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow showers, a (30%) chance of showers and a bit warmer Friday afternoon, a good (50%) chance of evening rain and snow showers, then rain and snow showers late Friday night.
• lows near 35-29 warming to 32 Thursday night highs 45-48.
• Mostly cloudy and a bit cooler with rain and snow showers and breezy Saturday and at night,
• Mostly cloudy with rain and snow showers Sunday, rain and snow showers likely (70%) Sunday night,
• Mostly cloudy with AM rain and snow showers, showers likely (70%) and a bit warmer Monday afternoon,
• highs 48-46 warming back to 48 Sunday lows 33-30. (seasonal averages high 55 low 41)

__________

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 (40%) chance of snow showers late at night,
• Mostly cloudy with snow showers and a bit warmer Thursday, patchy blowing snow in the afternoon, evening snow showers, a good (50%) chance of snow showers late Thursday night,
• A mix of clouds and sun and a bit warmer with a good (50%) chance of snow showers Friday, partly cloudy with a good (50%) chance of evening snow showers, then mostly cloudy with a good (50%) chance of snow showers late at night.
• snow level at the surface tonight, free air freezing level 2,500 ft. Wednesday evening through Thursday evening,
• lows 16-13 warming to 18 Thursday night highs 24-29.
• Mostly cloudy with snow showers and patchy blowing snow and a bit cooler Saturday, evening  snow showers, a good (50%) chance of snow showers late Saturday night,
• Mostly cloudy and a bit cooler with snow showers Sunday, evening snow showers likely (70%), partly cloudy with a good (50%) chance of snow showers Sunday night,
• Mostly cloudy and a bit warmer with a good (50%) chance of AM snow showers, snow showers likely (70%) Monday afternoon,
• snow level at the surface Saturday through Monday,
• highs 32-28 warming to 30 Monday lows 18-12.

__________

For all of your Eugene-Springfield and Lane County News, Weather, and Sports go to: EugeneDailyNews.com

__________