Here is my weekly weather quiz question. What is an“Adiabatic Lapse Rate?” Please remember to post your answer at the bottom of this page. An email will not suffice. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

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An Upper level High (Shaded “Arch” shape with blue arrows) to our Northwest is still sending cold air down to us from Canada. The days 1-3 graphic shows  surface low and frontal system headed our way for another snow and ice storm on Saturday as the warm air ahead of the front meets the cold air already in place at the surface. The graphic for days 3-7 shows another frontal system that will be headed our way next Wednesday. For mountain snow conditions at the local ski areas check out their websites or give them a call.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 83 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 95 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 69 in the Moderate category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Home Wood Heating Advisory:

Eugene-Springfield: YELLOW – Caution is Advised.

Oakridge: YELLOW – Caution is Advised.

*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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Advisories:

• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 6 AM UNTIL 6 PM SATURDAY FOR THE NORTH OREGON COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM UNTIL 2 PM SATURDAY FOR THE CENTRAL OREGON COAST.
• A WINTER STORM WARNING IS IN EFFECT FROM 8 AM SATURDAY UNTIL 10 PM SUNDAY FOR THE COAST RANGE OF NORTHWEST OREGON.
• A WINTER STORM WATCH IS IN EFFECT FROM 4 AM SATURDAY UNTIL 6 AM SUNDAY FOR THE CENTRAL COAST RANGE OF WESTERN OREGON, THE SOUTH WILLAMETTE VALLEY, THE CASCADE FOOTHILLS IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 AM SATURDAY UNTIL NOON SUNDAY FOR THE LOWER COLUMBIA.
• A WINTER STORM WARNING IS IN EFFECT FROM 10 AM SATURDAY UNTIL 10 PM SUNDAY FOR THE GREATER PORTLAND METRO AREA.
• A WINTER STORM WARNING IS IN EFFECT FROM 6AM SATURDAY UNTIL 4 PM SUNDAY FOR THE CENTRAL WILLAMETTE VALLEY AND THE NORTHERN OREGON CASCADE FOOTHILLS.
• A WINTER STORM WARNING IS IN EFFECT FROM 10 AM SATURDAY UNTIL 6 AM MONDAY FOR WESTERN COLUMBIA RIVER GORGE AND THE CENTRAL COLUMBIA RIVER GORGE.
• A WINTER STORM WARNING IS IN EFFECT FROM 4 AM SATURDAY UNTIL 6 AM SUNDAY NIGHT FOR THE THE CASCADE FOOTHILLS IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 6 AM SATURDAY UNTIL 6 PM SUNDAY FOR THE NORTH OREGON CASCADES.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM SATURDAY UNTIL 10 AM SUNDAY FOR THE CASCADES IN LANE COUNTY.
• A FLOOD WATCH IS IN EFFECT FROM SATURDAY EVENING THROUGH SUNDAY EVENING FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, JACKSON COUNTY, THE SOUTHERN OREGON CASCADES , AND THE SISKIYOU MOUNTAINS.
• A WINTER STORM WARNING IS IN EFFECT FROM 1 AM UNTIL 10 AM SATURDAY FOR CENTRAL DOUGLAS COUNTY.
• A WINTER STORM WARNING IS IN EFFECT FTOM 10 PM TONIGHT UNTIL NOON SATURDAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM TONIGHT THROUGH 4 PM SATURDAY FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS,
• A WINTER STORM WARNING IS IN EFFECT FROM 10 PM TONIGHT UNTIL 10 PM SATURDAY FOR THE KLAMATH BASIN.
• A WINTER STORM WARNING IS IN EFFECT FROM 1 AM SATURDAY UNTIL 4 AM SUNDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

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

• Partly cloudy this evening, mostly cloudy and cold with a (30%) chance of snow snow flurries tonight (under o.10 in. of rain possible), snow becoming likely (70%) toward AM,
• Cloudy with early AM snow likely (70%) with freezing rain and sleet, cooler with freezing rain Saturday afternoon and evening (0.50 in. of rain possible, 2 in. of snow possible, 0.25 in. of ice accumulation possible), rain and freezing rain late Saturday night (0.25 in. of rain possible, 0.25 in. of ice accumulation possible),
• Mostly cloudy with rain and a bit warmer Sunday (0.50 in. of rain possible), rain likely (70%) at night (0.25 in. of rain possible),
• Mostly cloudy with rain and a bit warmer Monday, then rain likely (70%) Monday night.
• lows 24-36 highs 32-42.
• Mostly cloudy with rain and snow and a bit cooler Tuesday, rain Tuesday night,
• Showers likely (70%) and a bit warmer Wednesday, rain and snow showers likely (70%) at night,
• Cloudy with a good (50%) chance of rain and snow showers and a bit cooler Thursday (snow level 1,000 ft.), a good (50%) chance of rain and snow showers Thursday night (snow level 1,000 ft.),
• Then mostly cloudy with a (40%) chance of rain Friday.
• highs 42-44 cooling back to 42 Friday lows 40-30. (seasonal averages high 46 low 34)

 

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Forecast for Roseburg:

• Partly cloudy this evening, mostly cloudy with rain and snow likely (70%) late tonight (under 0.10 in. of rain possible, 2-3 in. of snow possible above 1,500 ft., 1-2 in. of snow possible lower elevations, snow level 100 ft. late at night),
• Mostly cloudy with rain, snow and a slight (20%) chance of light freezing rain Saturday AM (AM snow level 300 ft.), rain with a (40%) chance of light freezing rain and a bit warmer in the afternoon (0.50 in. of rain possible, 1-2 in. of snow possible, under 0.25 in. of ice accumulation possible), then rain Saturday night (0.25 in. of rain possible) through Sunday night (, 0.50 in. of rain possible Sunday and 0.25 in. of rain possible Sunday night, snow level 3,500 ft. late Sunday night),
• Cloudy with rain and snow (snow possibly heavy at times) and a bit cooler Monday, then rain and snow Monday night.
• lows 26-42 cooling to 38 Monday night highs 43-48 cooling to 45 Monday.
• Mostly cloudy and a bit warmer with rain Tuesday and at night,
• Mostly cloudy with rain and a bit cooler Wednesday, rain likely (70%) Wednesday night,
• Rain and snow in the AM, rain and a bit cooler Thursday afternoon, evening rain likely (70%), rain and snow likely (70%) late Thursday night,
• Then mostly cloudy with a (30%) chance of rain and snow Friday.
• highs 47-44 lows 38-36. (seasonal averages high 49 low 36)

 

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

• Mostly cloudy with a slight (20%) chance of coastal rain early this evening, coastal rain likely (70%) late tonight while inland rain and snow likely (70%) and a (40%) chance of light freezing rain toward morning (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft.),
• Mostly cloudy with coastal rain Saturday while inland rain, snow and a (40%) chance of light freezing rain in the AM with inland rain and a bit warmer Saturday afternoon (0.50 in. of rain possible, AM snow level 1,500 ft.), rain Saturday night (0.50 in. of rain possible), Sunday (a bit warmer,0.50 in. of rain possible), and Sunday night (a bit cooler, 0.25 in. of rain possible),
• Mostly cloudy with rain, a bit cooler and breezy Monday and Monday night.
• lows 35-44 cooling to 42 Monday night highs 49-52 cooling back to 49 Monday.
• Mostly cloudy and a bit warmer with rain and breezy Tuesday and Tuesday night,
• Rain and a bit cooler Wednesday through Thursday night,
• Then mostly cloudy with a (30%) chance of rain Friday.
• highs 52-48 lows 42-39. (seasonal averages high 51 low 40)

 

 

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Forecast for the Cascades in Lane County:

• Partly cloudy this evening, mostly cloudy and cold with a (30%) chance of snow tonight, snow likely (70%) late tonight.
• Cloudy with AM snow and sleet, rain and snow Saturday afternoon (0.50 in. of rain possible, 2-5 in. of snow possible, under 0.25 in. of ice accumulation possible, freezing rain in the mountain valleys), rain and snow and a bit warmer Saturday night (0.25 in. of rain possible, 2-5 in. of snow possible, freezing rain in the mountain valleys),
• Mostly cloudy with rain and a bit warmer Sunday and at night,
• Then mostly cloudy with snow and a bit cooler Monday and Monday night.
• lows 14-24 highs 26-32 cooling to 30 Monday.
• snow level at the surface tonight, 4,000 ft. Saturday afternoon, 5,000 ft. Saturday night, 6,500 ft. Sunday, 5,500 ft. Sunday night, then 2,500 ft. Monday and Monday night.
• Mostly cloudy with rain and snow and a bit warmer Tuesday and at night,
• Rain and snow showers and a bit cooler Wednesday, rain and snow showers likely (70%)Wednesday night,
• Then cloudy and a bit cooler with a good (50%) chance of snow showers Thursday and Thursday night,
• Then mostly cloudy with a good (50%) chance of snow and a bit warmer Friday.
• snow level 2,500 ft. Tuesday and Tuesday night, 4,000 ft. Wednesday, 3,000 ft. Wednesday night, then at the surface Thursday through Friday.
• highs 34-28 warming to 30 Friday lows 28-20.

 

 

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

 

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Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

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