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 is moving 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 15 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 30 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 57 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 a good (50%) chance of rain and warmer this afternoon, some sun peeks possible, (under 0.10 in. of rain possible), a slight (20%) chance of showers this evening, patchy fog late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with areas of fog Sunday AM, mostly sunny and a bit cooler Sunday afternoon, mostly clear in the evening, more clouds to mostly cloudy with patchy fog late Sunday night,
• Mostly cloudy Monday with patchy AM fog, a good (50%) chance of rain in the afternoon, just mostly cloudy Monday night.
• highs 46-48 lows 32-36.
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Tuesday afternoon, a good (50%) chance of rain Tuesday night,
• Mostly cloudy with rain likely (60%) Wednesday, a (40%) chance of rain Wednesday night,
• A mix of clouds and sun with a slight (20%) chance of showers Thursday, just partly cloudy at night,
• Then a mix of clouds and sun Friday.
• highs 48-44 lows 39-35. (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 afternoon (0.10 in. of rain possible), partly cloudy with a slight (20%) chance of evening showers, mostly clear with patchy fog late tonight (under 0.10 in. of rain possible),
• Patchy AM fog, sunny and a bit cooler Sunday, mostly clear in the evening, partly cloudy with patchy fog and a slight (20%) chance of rain late at night,
• Mostly cloudy with a (40%) chance of rain Monday, mostly cloudy with a slight (20%) chance of rain in the evening, then just mostly cloudy late Monday night.
• highs 50-48 warming back to 50 Monday lows 35-40.
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Tuesday afternoon, cloudy with a (40%) chance of rain at night,
• A bit cooler with rain likely (60%) Wednesday, mostly cloudy and colder with a (30%) chance of rain Wednesday night,
• Mostly cloudy and a bit cooler with a (30%) chance of showers Thursday, then mostly cloudy with a slight (20%) chance of rain Thursday night and Friday.
• 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 and a bit cooler with a slight (20%) chance of rain this afternoon, partly cloudy with a slight (20%) chance of evening coastal showers (under 0.10 in. of rain possible), mostly cloudy with patchy fog late tonight,
• 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 rain late Sunday night,
• Mostly cloudy and a bit cooler with AM coastal rain likely (70%) and a good (50%) chance of rain Monday afternoon while a good (50%) chance of inland rain, mostly cloudy with a (30%) chance of showers in the evening, then partly cloudy late Monday night.
• highs 50-55 lows 39-45.
• Mostly cloudy with a slight (20%) chance of rain Tuesday afternoon, rain likely (70%) Tuesday night and Wednesday (a bit cooler), a (40%) chance of rain and colder at night,
• Mostly cloudy with a slight (20%) chance of showers Thursday, then a slight (20%) chance of rain Thursday night and Friday.
• highs 54-50 warming to 52 Friday lows 46-40. (seasonal averages high 51 low 40).

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Forecast for the Cascades in Lane County:

• Mostly cloudy with rain and snow today (0.10 in. of rain possible, 1-2 in. of snow possible), a slight (20%) chance of rain and snow showers this evening, becoming partly cloudy late tonight,
• AM clouds, mostly sunny Sunday, mostly clear at night,
• Mostly cloudy with a good (50%) chance of rain Monday, then a slight (20%) chance of rain Monday night.
• snow level 3,000 ft. today, 3,500 ft. tonight, free air freezing level 5,000 ft. Sunday, 6,000 ft. Sunday night, then 5,000 ft. Monday and Monday night.
• highs near 33 lows 22-26.
• A mix of clouds and sun Tuesday, mostly cloudy with a good (50%) chance of rain Tuesday night,
• Rain likely (70%) Wednesday, a good (50%) chance of rain at night,
• A mix of clouds and sun with a slight (20%) chance of rain and snow Thursday, mostly cloudy with a slight (20%) chance of showers at night,
• Then a mix of clouds and sun with a slight (20%) chance of showers Friday.
•  free air freezing level 5,000 ft. Tuesday, snow level 5,500 ft. Tuesday night, 4,000 ft. Wednesday, 3,000 ft. Wednesday night and Thursday, 3,500 ft. Thursday night, then 3,000 ft. Friday.
• highs 35-32 lows 28-23

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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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