Here is my weekly weather quiz question. What is “Lake Effect Snow? 

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Another  Upper Level Low Pressure Trough (“U” shape) is sending more moisture to the Pacific Northwest in the form of a weak  Atmospheric River. The graphics for days 1-3 show the cold front that moved through the Pacific Northwest and the next one behind it.  The graphics for days 3-7  Sunday through Thursday show the continuing series of complex frontal systems that will slide into the Pacific Northwest through the period.

Note: Willamette Pass, Hoodoo, and Mt. Ashland  are still open for skiing. With the heavy snow pack the ski season is booming. Check their Web Sites for specific dates and times of operation.

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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 22 in the Good 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)

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ADVISORIES:

• A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 8 AM TODAY FOR CENTRAL DOUGLAS COUNTY.
• A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 8 AM TODAY FOR CENTRAL DOUGLAS COUNTY AND JACKSON COUNTY.
• A FROST ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE NORTHERN OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, THE GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY AND THE UPPER HOOD RIVER VALLEY.
• A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 8 AM TODAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A FLOOD WARNING HAS BEEN EXTENDED FOR THE MALHEUR RIVER NEAR VALE AFFECTING MALHEUR COUNTY.

HEALTH ADVISORIES:

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

• Mostly cloudy with widespread AM frost, mostly cloudy, more sun breaks, and a bit warmer this afternoon, mostly cloudy this evening, partly cloudy with patchy frost late tonight,
• A mix of clouds and sun, a bit warmer  Friday, partly cloudy Friday night,
• Mostly cloudy and a bit warmer Saturday, then mostly cloudy with a slight (20%) chance of rain Saturday night.
• highs 53-62 lows 34-42.
• Mostly cloudy with a slight (20%) chance of  AM rain, a bit cooler with a good (50%) chance of showers Sunday afternoon, rain likely (70%) Sunday night,
• Mostly cloudy and cooler with showers Monday, evening showers likely (70%), a good (50%) chance of showers late at night,
• Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) and a bit cooler Tuesday afternoon, a (30%) chance of showers late Tuesday night,
• Then a mix of clouds and sun with a good (50%) chance of showers and a bit warmer Wednesday.
• highs 60-50 warming 55 Wednesday lows 40-36. (seasonal averages high 61 low 40)

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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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Eugene-Springfield Pollen Count:

Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy with areas of AM frost, mostly cloudy and a bit warmer this afternoon, partly cloudy tonight,
• Some AM clouds, sunny and a bit warmer Friday afternoon, partly cloudy in the evening, mostly cloudy at night,
• Mostly cloudy and a bit warmer Saturday, then mostly cloudy Saturday night.
• highs 55-64 lows 37-43.
• Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) and a bit cooler Sunday afternoon, evening showers, showers likely (70%) late Sunday night,
• Mostly cloudy with AM rain and snow showers, showers and much cooler Monday afternoon, evening rain and snow showers, rain and snow showers likely (70%) late at night,
• Mostly cloudy with rain and snow showers likely (70%) and a bit warmer Tuesday, a (30%) chance of rain and snow showers Tuesday night,
• Mostly cloudy with a (40%) chance of AM rain and snow showers, then showers and a bit warmer Wednesday afternoon.
• highs 63-52 warming to 56 Wednesday lows 42-37. (seasonal averages high 62 low 42)

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

• Mostly cloudy with areas of AM frost, mostly cloudy and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy late tonight,
• Some AM clouds, sunny and a bit warmer Friday afternoon, partly cloudy in the evening, mostly cloudy late at night,
• Then mostly cloudy and a bit warmer Saturday and Saturday night.
• highs 53-57 lows 37-42.
• Mostly cloudy with showers likely (70%) Sunday and Sunday night,
• Mostly cloudy with showers and a bit cooler Monday, showers likely (70%) at night,
• Mostly cloudy with AM rain and snow showers likely (70%),  showers likely (70%) Tuesday afternoon, a (40%) chance of showers Tuesday night,
• Then mostly cloudy and a bit warmer with a (40%) chance of showers Wednesday.
• highs 57-52 warming to 54 Wednesday lows 39-37. (seasonal averages high 56 low 44)

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

• A mix of clouds and sun and a bit warmer this afternoon, partly cloudy with a slight (20%) chance of evening snow showers, partly cloudy with widespread frost late tonight,
• Partly cloudy and warmer Friday, partly cloudy Friday night,
• A mix of clouds and sun and a bit warmer Saturday, mostly cloudy in the evening, then partly cloudy late Saturday night.
• free air freezing level at the surface rising to 4,000 ft. this afternoon, snow level 2,500 ft. tonight, free air freezing level at the surface rising to 5,000 ft. Friday afternoon, 6,000 ft. falling to 5,500 ft. late Friday night, 7,500 ft. Saturday, then 8,000 ft. Saturday night.
• highs 34-48 lows 17-32.
• Clouds and sun with a slight (20%) chance of AM rain, a good (50%) chance of rain Sunday afternoon and evening, rain and snow likely (70%) late Sunday night,
• Mostly cloudy with rain and snow showers and colder Monday and in the evening, a good (50%) chance of rain and snow showers late at night,
• Mostly cloudy with AM snow showers, a bit cooler with rain showers and snow showers likely (70%) Tuesday afternoon, a good (50%) chance of evening rain and snow showers, partly cloudy with a good (50%) chance of rain and snow showers Tuesday night,
• A mix of clouds and sun with a good (50%) chance of rain and snow showers and a bit warmer Wednesday afternoon.
• snow level 5,500 ft. Sunday, 4,000 ft. Sunday night, 3,000 ft. Monday, 2,500 ft. Monday night and Tuesday, 3,000 ft. Tuesday night, then 3,500 ft. Wednesday.
• highs 48-35 warming to 40 Wednesday lows 27-22.

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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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