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 part of the Pacific Northwest and slides southward. More frontal systems in the parade of storms move toward us Wednesday.  By Saturday yet another frontal system pushes into Oregon. 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 81 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 34 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 56 in the Moderate 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 areas of fog this AM, mostly sunny this afternoon, mostly clear in the evening, more clouds to mostly cloudy with patchy fog late tonight,
• 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.
• highs 46-48 lows 34-42.
• 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:

• Areas of fog this AM, sunny and a bit cooler this afternoon, mostly clear in the evening, partly cloudy with patchy fog and a slight (20%) chance of rain late tonight,
• 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.
• highs 50-48 warming back to 50 Monday lows 37-43.
• 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:

• Mostly cloudy with patchy AM fog, becoming mostly sunny and a bit warmer this afternoon, mostly clear this evening, mostly cloudy with a slight (20%) chance of coastal rain late tonight 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.
• highs 54-56 lows 42-48.
• 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 sunny today, clear this evening, partly cloudy late tonight,
• 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, a slight (20%) chance of rain and snow Monday night,
• Just cloudy Tuesday, then rain and snow Tuesday night.
• free air freezing level 4,500 ft. rising to 5,500 ft. this afternoon, 6,500 ft. tonight, 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.
• highs 33-35 lows 23-30.
• Mostly cloudy with rain and snow likely (60%) Wednesday and at night,
• Mostly cloudy with a (30%) chance of rain and snow 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 and snow Saturday.
•  free air freezing level 5,000 ft. Wednesday, 4,000 ft. Wednesday night, 3,000 ft. Thursday, 3,500 ft. Thursday night, free air freezing level 4,000 ft. Friday 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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