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) has moved away from Oregon. Short-lived high pressure (Shaded “Arch” shape with blue arrows) gave us a break Saturday, but another low follows close behind. Here comes yet another frontal system moving through today. 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 19 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 21 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 (40%) chance of rain this AM, showers and a bit cooler this afternoon (0.25 in. of rain possible), mostly cloudy with patchy fog and a slight (20%) chance of showers late tonight,
• Mostly cloudy with a (30%) chance of showers with patchy fog Monday AM, mostly cloudy and a bit warmer Monday afternoon, partly cloudy with patchy fog at night,
• Partly cloudy with patchy AM fog, mostly sunny and a bit warmer Tuesday, then partly cloudy at night.
• highs 50-60 lows 35-42.
• A mix of clouds and sun and a bit cooler Wednesday, partly cloudy Wednesday night through Thursday night,
• A mix of clouds and sun with a slight (20%) chance of rain Friday, becoming mostly cloudy with a good (50%) chance of rain at night,
• Then cloudy with a good (50%) chance of rain Saturday.
• high 59-62 cooling to 57 Saturday lows 40-47. (seasonal averages high 52 low 35).

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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.

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

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Forecast for Roseburg:

• Cloudy with patchy AM fog and a (30%) chance of rain, rain this afternoon (0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of evening showers, areas of fog late tonight and Monday AM, partly cloudy and a bit warmer Monday afternoon, mostly clear in the evening, partly cloudy with areas of fog late Monday night and Tuesday AM, sunny and a bit warmer  in the afternoon, then partly cloudy Tuesday night.
• highs 52-60 lows 38-40.
• Mostly cloudy with a slight (20%) chance of rain Wednesday AM, partly cloudy with a slight (20%) chance of afternoon rain, patchy evening rain, areas of fog late Wednesday night and Thursday AM, partly cloudy in the afternoon, mostly cloudy with patchy evening fog, areas of fog late Thursday night,
• Partly cloudy with patchy AM fog, partly cloudy with a slight (20%) chance of rain and a bit warmer Friday afternoon, then rain likely (70%) Friday night and Saturday (colder).
• highs 62-66 cooling to 55 Saturday lows 42-48. (seasonal averages high 55 low 38).

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

• Mostly cloudy with coastal rain today while a good (50%) chance of AM inland rain and afternoon inland rain (0.25 in. of rain possible), partly cloudy this evening, mostly cloudy with areas of  fog late tonight and Monday AM, partly cloudy and warmer in the afternoon, mostly clear with areas of fog late Monday night,
• Sunny and a bit warmer Tuesday, then partly cloudy at night.
• highs 53-75 lows 40-45.
• Mostly cloudy with a slight (20%) chance of rain Wednesday AM, partly cloudy and cooler with a slight (20%) chance of rain Wednesday afternoon, mostly cloudy with areas of fog Wednesday night through Thursday night,
• Patchy AM fog, mostly cloudy with a slight (20%) chance  of rain Friday, then rain likely (60%) Friday night and Saturday (cooler).
• highs 63-65 cooling to 54 Saturday lows 45-50. (seasonal averages high 53 low 40).

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Forecast for the Cascades in Lane County:

• A mix of clouds and sun with a slight (20%) chance of AM rain and snow, rain and snow and a bit cooler this afternoon (0.25 in. of rain possible,1-3 in. of snow possible), mostly cloudy with a slight (20%) chance of rain and snow showers this evening, a slight chance of snow showers and colder late tonight,
• Mostly cloudy Monday AM, partly cloudy and a bit warmer in the afternoon, then just partly cloudy Monday night,
• Mostly sunny and a bit warmer Tuesday, then partly cloudy at night.
• snow level 5,000 ft. today, 4,500 ft. tonight and Monday, 4,500 ft. Monday night, then free air freezing level 9,000 ft. Tuesday and Tuesday night.
• highs 38-48 lows 26-34.
• A mix of clouds and sun with a slight (20%) chance of rain Wednesday, just partly cloudy and a bit warmer Wednesday night through Thursday night,
• A mix of clouds and sun with a slight (20%) chance of rain Friday, then mostly cloudy with a good (50%) chance of rain Friday night and Saturday (cooler).
• snow level 7,000 ft. Wednesday, free air freezing level 8,000 ft. Wednesday night, 9,000 ft. Thursday and Thursday night, snow level 8,000 ft. Friday, above 8,000 ft, Friday night, then 7,000 ft. Saturday.
• highs 48-52 cooling to 43 Saturday lows 33-38 cooling to 36 Friday 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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