Here is my weekly weather quiz question for the last time. What is  “Pancake Ice?” Here is the correct answer. Pancake Ice: In hydrologic terms, circular flat pieces of ice with a raised rim; the shape and rim are due to repeated collisions. I’ll have a new weekly weather quiz question for you starting Monday. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

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An upper level trough of low pressure (Shaded area with blue arrows) is moving through and away from Oregon. A frontal system has moved through and brought more showers. Short-lived high pressure (Shaded “Arch” shape with blue arrows) gives us a break today, but another low follows close behind. Here comes yet another frontal system approaching Sunday. By Wednesday this frontal system will be approaching the Pacific Northwest. And, of course, a new frontal system will be located offshore by Friday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 35 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories: None At This Time.

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

• A mix of clouds and sun and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy with patchy fog and a (30%) chance of rain late tonight,
• Patchy fog Sunday AM, rain, rain a bit cooler in the afternoon (0.25 in. of rain possible), mostly cloudy in the evening, partly cloudy with patchy fog late Sunday night,
• Patchy AM fog, a mix of clouds and sun and a bit warmer Monday, then partly cloudy Monday night.
• highs 53-50 warming back to 53 Monday lows near 36.
• Mostly sunny and warmer Tuesday, partly cloudy at night,
• A mix of clouds and sun Wednesday, partly cloudy Wednesday night through Thursday night,
• Then a mix of clouds and sun with a slight (20%) chance of rain Friday.
• high 57-60 lows 42-40 warming to 44 Thursday night. (seasonal averages high 52 low 35).

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Home Wood Heating Advisory:

Eugene-Springfield: GREEN – Wood Burning Allowed.

Oakridge: GREEN – Wood Burning Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Advisory Courtesy of Lane Regional Air Protection Agency (LRAPA).

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Forecast for Roseburg:

• Partly cloudy and a bit warmer this afternoon, mostly cloudy with patchy fog late tonight,
• Cloudy with patchy AM fog and a (30%) chance of rain, rain likely (60%) Sunday afternoon (0.10 in. of rain possible), mostly cloudy with areas of fog late Sunday night and Monday AM, partly cloudy and a bit warmer Monday afternoon, then partly cloudy with patchy fog late Monday night.
• highs 54-57 lows 37-40 cooling back to 37 Monday night.
• Partly cloudy and a bit cooler with areas of fog Tuesday, partly cloudy Tuesday night and  Wednesday, areas of fog late Wednesday night,
• Areas of AM fog, partly cloudy with patchy lingering fog Thursday afternoon, mostly cloudy with patchy evening fog, areas of fog late Thursday night,
• Then just partly cloudy and a bit warmer Friday.
• highs 60-65 lows 42-46. (seasonal averages high 54 low 37).

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

• Partly cloudy and a bit warmer this afternoon, mostly cloudy this evening, mostly clear with patchy fog late tonight,
• Mostly cloudy with patchy AM fog Sunday, AM coastal rain likely (70%) and a good (50%) chance of afternoon coastal rain while a good (50%) chance of AM inland rain, rain likely (60%) in the afternoon (0.25 in. of rain possible), partly cloudy in the evening, then mostly cloudy with areas of  fog late Sunday night and Monday AM, partly cloudy and a bit warmer in the afternoon, then mostly clear with areas of fog late Monday night.
• highs 55-60 lows 44-40 warming back to 44 Monday night.
• Areas of AM fog, mostly sunny and a bit warmer Tuesday afternoon, mostly clear at night,
• Partly cloudy and cooler Wednesday, partly cloudy with areas of fog Wednesday night and Thursday AM, mostly cloudy with a slight (20%) chance of rain Thursday afternoon, areas of fog late Thursday night,
• Then just mostly cloudy.
• highs 68-62 lows 46-48. (seasonal averages high 53 low 40).

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Forecast for the Cascades in Lane County:

• Partly cloudy this afternoon, mostly cloudy this evening, partly cloudy late tonight,
• Becoming mostly cloudy with rain and snow and a bit cooler Sunday (0.25 in. of rain possible, 1-3 in. of snow possible), mostly cloudy in the evening, just partly cloudy late Sunday night,
• A mix of clouds and sun and a bit warmer Monday, then partly cloudy Monday night.
• free air freezing level 4,500 ft. this afternoon, 5,000 ft. tonight, snow level 4,500 ft. Sunday, free air freezing level 5,500 ft. Sunday night, 4,500 ft. Monday, then 5,000 ft. Monday night.
• highs 39-36 warming back to 39 Monday lows 25-30.
• Mostly sunny and a bit warmer Tuesday, partly cloudy at night,
• A mix of clouds and sun Wednesday, just partly cloudy and a bit warmer Wednesday night through Thursday night,
• Then a mix of clouds and sun with a slight (20%) chance of rain Friday.
• free air freezing level 10,000 ft. Tuesday, 9,000 ft. Tuesday night, 8,000 ft. Wednesday and Wednesday night, 9,000 ft. Thursday and Thursday night, then snow level above 8,000 ft. Friday.
• highs 46-49 lows 33-38.

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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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