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. Low pressure to the South combined to return the moisture to Oregon. The days 1-3 graphic shows  surface low and frontal system that moved Southward along the Pacific Coast and then inland to our South adding moisture to the cold air creating our snow storm. The graphic for days 3-7 shows the frontal systems that will be headed our way Saturday through 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 160 in the Unhealthy category measuring Particulate Matter.

Oakridge: The Air Quality Index is 18 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 24 in the Good 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 FREEZE WARNING IS IN EFFECT FROM 10 PM TONIGHT UNTIL 10 AM FRIDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• 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:

• Areas of freezing fog this AM, mostly sunny and a bit cooler this afternoon, partly cloudy and cold with areas of freezing fog late tonight,
• Partly cloudy with areas of AM freezing fog again, mostly sunny and a bit warmer Friday afternoon, partly cloudy and cold Friday night,
• Cloudy with a good (50%) AM freezing rain and snow, rain with a (40%) chance of freezing rain and a bit warmer Saturday afternoon (snow level 1,000 ft.), evening rain and freezing rain likely (70%), then rain late Saturday night.
• highs 30-39 lows 14-36.
• Mostly cloudy with rain and a bit warmer Sunday, rain likely (70%) Sunday night through Tuesday, rain Tuesday night,
• Then rain likely (70%) Wednesday.
• highs 43-40 lows near 36. (seasonal averages high 46 low 34)

 

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Forecast for Roseburg:

• Partly cloudy with patchy freezing fog this AM, sunny this afternoon, mostly clear with patchy freezing fog late tonight and Friday AM, sunny and a bit warmer Friday afternoon, mostly clear in the evening, mostly cloudy with a slight (20%) chance of rain, freezing rain, light freezing rain  and snow late Friday night,
• Mostly cloudy with rain, snow likely (70%) and a slight (20%) chance of light freezing rain Saturday AM, rain and snow likely (70%) with a (30%) chance of light freezing rain and a bit warmer in the afternoon,                                                                                                                                                                                                                                                                                                                                                                                                                                                                    rain with a (30%) chance of light freezing rain and a bit warmer Saturday night.
• highs 34-44 lows 20-40.
• Mostly cloudy with rain and a bit warmer Sunday and at night,
• Cloudy with rain and snow likely (70%) and a bit cooler Monday, rain and snow at night and Tuesday (a bit warmer), then mostly cloudy with rain Tuesday night and Wednesday (a bit cooler).
• highs 47-45 warming to 48 Tuesday cooling to 46 Wednesday lows near 40. (seasonal averages high 49 low 36)

 

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

• Sunny today, mostly clear this evening, partly cloudy with patchy freezing fog late tonight,
• Mostly cloudy with patchy freezing fog Friday AM, sunny and a bit warmer in the afternoon, partly cloudy in the evening, becoming mostly cloudy with a slight (20%) chance of rain and light freezing rain late Friday night (snow level 2,000 ft.),
• Cloudy with rain likely (70%) and a slight (20%) chance of light freezing rain Saturday AM, rain and a bit warmer in the afternoon, then rain Saturday night.
• highs 40-49 lows 25-44.
• Cloudy with rain and a bit warmer Sunday and Sunday night,
• Mostly cloudy with rain likely (70%) and a bit cooler Monday, then rain and breezy Monday night through Wednesday.
• highs 52-48 warming back to 52 Tuesday cooling to 50 Wednesday lows 42-44. (seasonal averages high 51 low 40)

 

 

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Forecast for the Cascades in Lane County:

• Mostly sunny and a bit cooler today, mostly clear and very cold tonight,
• Mostly sunny and a bit warmer Friday, partly cloudy and cold at night,
• Cloudy with a good (50%) chance of AM snow, snow and a bit warmer Saturday afternoon, then rain and snow Saturday night.
• free air freezing level at the surface today through Friday night, snow level at the surface Saturday, then 4,000 ft. Saturday night.
• highs 18-27 lows 4-23.
• Mostly cloudy with rain and snow and a bit warmer Sunday through Monday, snow Monday night,
• Mostly cloudy with snow Tuesday, then rain and snow Tuesday night and Wednesday.
• snow level 6,000 ft. Sunday, 5,500 ft. Sunday night, 3,500 ft. Monday, 2,500 ft. Monday night and Tuesday, 4,000 ft. Tuesday night, then 3,500 ft. Wednesday.
• highs near 32 lows 24-20 warming back to 24 Tuesday night.

 

 

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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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