Here is my weekly weather quiz question for the last time. What is “a Depression?” Here is the correct answer. A Depression is a region of low atmospheric pressure that is usually accompanied by low clouds and precipitation. The term is also sometimes used as a reference to a Tropical Depression. 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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A large upper level low (Shaded U shape with blue arrows) continues to send frontal systems at us. A frontal system moves through the Pacific Northwest. Even more frontal systems line up offshore early next week (position shown  is Monday). Wednesday sees yet another in the parade of storms moving toward us. Willamette Pass, Hoodoo and Mt. Ashland are all open with great ski conditions. Check their websites for updates.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 28 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 20 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: None at This Time.

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

• Mostly cloudy with a slight (20%) chance of showers this evening, partly cloudy with areas of fog late tonight,
• Mostly cloudy with areas of fog Sunday AM, mostly sunny in the afternoon, mostly clear in the evening, more clouds to mostly cloudy with patchy fog late Sunday night,
• Cloudy Monday with a good (50%) chance of AM rain, occasional afternoon rain (0.15 in. of rain possible), a (30%) chance of evening rain,  just mostly cloudy late Monday night,
• Mostly cloudy with a good (50%) chance of rain Tuesday afternoon, then rain at night.
• lows 32-42 highs 46-48.
• Mostly cloudy with rain likely (60%) Wednesday, cloudy with a good (50%) chance of rain Wednesday night,
• A (30%) chance of showers Thursday, just mostly cloudy Thursday night,
• Partly cloudy Friday, mostly cloudy at night,
• Then mostly cloudy with a slight (20%) chance of rain Saturday.
• highs near 46 lows 37-35. (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 slight (20%) chance of showers this evening, mostly clear with areas of fog late tonight (under 0.10 in. of rain possible) and Sunday AM, sunny and a bit cooler in the afternoon, mostly clear in the evening, partly cloudy with patchy fog and a slight (20%) chance of rain late Sunday night,
• Mostly cloudy and just a bit warmer with a (30%) chance of rain Monday (0.10 in. of rain possible), a slight (20%) chance of showers in the evening,  just mostly cloudy late Monday night (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of rain Tuesday afternoon, then rain likely (70%) Tuesday night.
• lows 35-40 highs 50-48 warming back to 50 Monday.
• Mostly cloudy with rain likely (60%) Wednesday, a good (50%) chance of evening rain, colder with a (30%) chance of showers late Wednesday night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Thursday, a slight (20%) chance of rain Thursday night,
• Partly cloudy Friday, then mostly cloudy with a (30%) chance of rain Friday night and Saturday.
• highs 50-46 lows 43-35. (seasonal averages high 49 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Partly cloudy with a slight (20%) chance of evening coastal showers, mostly cloudy with patchy fog late tonight (under 0.10 in. of rain possible),
• Mostly cloudy Sunday with patchy AM fog, becoming mostly sunny and a bit warmer in the afternoon, mostly clear in the evening, mostly cloudy with a slight (20%) chance of coastal rain late Sunday night while partly cloudy inland with patchy fog and a slight (20%) chance of rain late at night,
• Mostly cloudy with rain likely (60%) Monday (0.15 in. of rain possible) , a slight (20%) chance of showers in the evening, just mostly cloudy late Monday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Tuesday afternoon, then rain Tuesday night.
• lows 39-48 highs 54-56.
• Mostly cloudy and a bit cooler with rain likely (70%) Wednesday, a (40%) chance of evening rain, a good (50%) chance of showers and colder late at night,
• Mostly cloudy with a slight (20%) chance of showers Thursday, partly cloudy with a slight (20%) chance of showers Thursday night,
• Partly cloudy with a slight (20%) chance of showers Friday, then mostly cloudy with a (40%) chance of rain Friday night and Saturday.
• highs 52-54 lows 42-40 warming to 43 Friday night. (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 showers this evening, becoming partly cloudy late tonight,
• Mostly sunny Sunday, clear in the evening, more clouds at night,
• Cloudy with a good (50%) chance of rain and snow Monday AM, rain and snow in the afternoon, a (40%) chance of evening rain and snow, just cloudy Monday night and Tuesday, then rain Tuesday night.
• snow level 4,000 ft. tonight, free air freezing level 5,500 ft. Sunday, 6,000 ft. Sunday night, snow level 4,500 ft. Monday, 5,000 ft. Monday night, free air freezing level 6,000 ft. Tuesday, then snow level 5,000 ft. Tuesday night.
• lows 22-30 highs 33-35.
• Mostly cloudy with rain likely (70%) Wednesday and at night,
• Mostly cloudy with a (30%) chance of rain and snow showers Thursday, mostly cloudy with a slight (20%) chance of rain and snow showers at night,
• Partly cloudy Friday and Friday night,
• Then mostly cloudy with a slight (20%) chance of rain Saturday.
•  free air freezing level 5,000 ft. Wednesday, 4,000 ft. Wednesday night, 3,000 ft. Thursday, 3,500 ft. Thursday night, then 3,000 ft. Friday, free air freezing level 6,500 ft. Friday night, then snow level 4,000 ft. Saturday.
• highs 34-32 lows near 23

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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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