Here is my new weekly weather quiz question. What is “a Depression?” 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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A large upper level low (Shaded U shape with blue arrows) is keeping our weather static with morning and late night dense fog and freezing fog and some afternoon warming. More frontal systems are pushed inland bringing more moisture with them. By Saturday another frontal system approaches the Pacific Northwest. Even more frontal systems line up offshore early next week. Local skiers continue to rejoice. The mountains have a lot of new snow and Willamette Pass, Hoodoo and Mt. Ashland are all open. Check their websites for updates.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 34 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 24 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 27 in the Good category measuring Particulate Matter.

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

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Advisories:

• A DENSE FOG ADVISORY IS IN EFFECT UNTIL 10 AM FOR THE CENTRAL WILLAMETTE VALLEY AND THE SOUTH WILLAMETTE VALLEY.
• A HIGH SURF ADVISORY IS IN EFFECT UNTIL 4 AM TODAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.

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

• Mostly cloudy with areas of dense fog and just a slight (20%) chance of freezing fog this AM (where the temperature falls to near 32), mostly cloudy with a good (50%) chance of rain this afternoon (under 0.10 in. of rain possible), a good (50%) chance of rain and a slight (20%) chance of freezing rain tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of rain and freezing rain Thursday AM, a slight (20%) chance of showers in the afternoon (under 0.10 in. of rain possible), just mostly cloudy with patchy fog and a slight (20%) chance of freezing fog late Thursday night and Friday AM, partly cloudy in the afternoon, mostly cloudy with patchy fog and freezing fog and a slight (20%) chance of rain and snow Friday night (snow level 1,000 ft.).
• highs 42-39 lows 34-32.
• Patchy fog and freezing fog again Saturday AM, mostly cloudy with a slight (20%) chance of rain and snow in the afternoon, patchy fog and freezing fog late Saturday night and Sunday AM, mostly cloudy in the afternoon, patchy fog and freezing fog Sunday night,
• Mostly cloudy with patchy AM fog and freezing fog, partly cloudy in the afternoon, mostly cloudy with a slight (20%) chance of rain Monday night,
• Then A mix of clouds and sun  with a slight (20%) chance of rain Tuesday.
• highs near near 38 lows near 30. (seasonal averages high 46 low 34)

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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:

• Mostly cloudy with a good (50%) chance of rain today (under 0.10 in. of rain possible, snow level 3,500 ft.),  a good (50%) chance of showers tonight (under 0.10 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft.),
• A (30%) chance of AM rain and snow Thursday, mostly cloudy and a bit cooler with a slight (20%) chance of rain Thursday afternoon and evening, patchy fog at night,
• Mostly cloudy with patchy AM fog, partly cloudy Friday afternoon, mostly cloudy with a slight (20%) chance of rain Friday night.
• highs 50-46 lows 37-33 warming to 36 Friday night.
• Mostly cloudy and a bit cooler with a slight (20%) chance of rain Saturday, just mostly cloudy Saturday night,
• Partly cloudy with patchy fog and a bit warmer Sunday, partly cloudy at night,
• Partly cloudy with patchy fog and a slight (20%) chance of rain Monday night and Tursday.
• highs 44-48 lows 34-38. (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 coastal AM rain likely (70%) with showers likely (70%) and a slight (20%) chance of thunderstorms this afternoon while rain likely (60%) today inland (0.10 in. of rain possible), a (40%) chance of  showers and a slight (20%) chance of coastal thunderstorms this evening and a slight (20%) chance of showers late tonight while a (30%) chance of inland rain at night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler Thursday with a (30%) chance of AM coastal rain and a slight (20%) chance of thunderstorms with a slight (20%) chance of afternoon rain while a (30%) chance of inland rain (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of coastal rain in the evening while patchy inland fog late Thursday night,
• Mostly cloudy with patchy AM fog Friday, then partly cloudy with a slight (20%) chance of rain at night.
• highs 55-53 lows 42-39 warming to 42 Friday night.
• Mostly cloudy and a bit cooler with a slight (20%) chance of rain Saturday and Saturday night,
• Mostly cloudy with patchy fog Sunday, partly cloudy at night,
• Partly cloudy with patchy fog and a slight (20%) chance of rain Monday, mostly cloudy with a (30%) chance of rain Monday night,
• Then mostly cloudy with a slight (20%) chance of rain Tuesday.
• highs near 52 lows 39-43. (seasonal averages high 51 low 40).

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of rain and snow today (under 0.10 in. of rain possible), cloudy with a good (50%) chance of rain and snow and a slight (20%) chance of freezing rain late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of AM snow, a (30%) chance of snow showers and a bit cooler Thursday afternoon, a slight (20%) chance of evening rain and snow showers, partly cloudy and cold Thursday night,
• A mix of clouds and sun Friday, partly cloudy in the evening, then becoming mostly cloudy with a slight (20%) chance of snow Friday night.
• snow level 3,000 ft. today, 3,500 ft. tonight, 2,500 ft. Thursday, 4,000 ft. Thursday night, free air freezing level 5,000 ft. Friday, then snow level at the surface Friday night.
• highs 34-30 lows 24-19 warming to 24 Friday night.
• Mostly cloudy with a slight (20%) chance of snow Saturday and at night,
• Partly cloudy in the AM, mostly sunny Sunday, mostly clear Sunday night,
• Mostly sunny Monday AM, partly cloudy in the afternoon, mostly cloudy with a slight (20%) chance of rain and snow Monday night,
• Then a mix of clouds and sun with a slight (20%) chance of rain and snow Tuesday.
• snow level at the surface Saturday and Saturday night, free air freezing level 4,000 ft. Sunday and Sunday night, snow level 4,500 ft. Monday, 4,000 ft Monday night, then 4,500 ft. Tuesday.
• highs 32-34 lows near 24.

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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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