Here is my new weekly weather quiz question. What is  a “Percolation Path?” 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 low pressure trough (Shaded “U” shape with blue arrows) still controls our weather and will keep the showers around as it sends another frontal system into Oregon. More storms will follow as a frontal system pushes through Wednesday. We will be visited by yet another frontal system moves in next Sunday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 7 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

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

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Advisories:

• A BEACH HAZARDS STATEMENT IS IN EFFECT UNTIL 8 PM TONIGHT FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST. THIS MEANS THAT RIP CURRENTS, LONGSHORE CURRENTS, SNEAKER WAVES, AND OTHER HAZARDS CREATE LIFE-THREATENING CONDITIONS IN THE SURF ZONE. CAUTION SHOULD BE USED WHEN IN OR NEAR THE WATER.

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

• Mostly cloudy with showers likely (70%) and a bit cooler with a slight (20%) chance of thunderstorms this afternoon (0.10 in. of rain possible, more in storms), mostly cloudy with a good (50%) chance of evening showers, partly cloudy with a slight (20%) chance of showers late tonight,
• Patchy AM fog and a slight (20%) chance of rain, increasing clouds with rain and a bit cooler Tuesday afternoon (0.25 in. of rain possible, rain likely (70%) in the evening, a good (50%) chance of rain at night,
• Mostly cloudy with rain and a bit warmer Wednesday, evening rain, a good (50%) chance of rain late at night.
• highs 53-48 warming to 55 Wednesday lows 36-44.
• Mostly cloudy with rain and a bit warmer Thursday, rain likely (60%) Thursday night,
• Showers likely (70%) and a bit cooler Friday, a good (50%) chance of showers at night,
• Then mostly cloudy with rain likely (60%) Saturday through Sunday.
• highs 56-54 lows near 42. (seasonal averages high 55 low 36).

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Home Wood Heating Advisory:

Eugene-Springfield: GREEN – Burning is Allowed.

Oakridge: GREEN – Burning is Allowed.

*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 showers likely (70%) and a slight (20%) chance of thunderstorms this afternoon (snow level 2,500 ft.), a slight (20%) chance of evening showers (snow level 3,000 ft.), just mostly cloudy late tonight,
• Mostly cloudy with patchy fog and a slight (20%) chance of AM rain, then rain and snow Tuesday afternoon (snow level 2,500 ft.) and a bit cooler, a 30% chance of evening rain, then rain likely (70%) late Tuesday night,
• Then rain Wednesday and Wednesday night.
• highs 54-59 lows 39-36 warming to 46 Wednesday night.
• Mostly cloudy with rain and a bit cooler Thursday, rain likely (70%) Thursday night,
• Rain and a bit cooler Friday, rain likely (70%) at night,
• Mostly cloudy with rain Saturday and Saturday night,
• Then cloudy with rain likely (70%) Sunday.
• highs 58-56 lows near 43. (seasonal averages high 57 low 39).

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

• Mostly cloudy with showers likely (70%) and a bit cooler this afternoon with a slight (20%) chance of thunderstorms, mostly cloudy with a (40%) chance of evening coastal showers while a slight (20%) chance of inland evening showers and just mostly cloudy inland late tonight,
• Mostly cloudy with patchy fog and a slight (20%) chance of AM rain Tuesday, rain and a bit cooler in the afternoon and Tuesday night,
• Then rain, possibly heavy at times, and windy and warmer Wednesday and Wednesday night.
• highs 53-50 warming to 59 Wednesday lows 40-49.
• Mostly cloudy with rain, possibly heavy at times, and windy Thursday, rain Thursday night and Friday, rain likely (60%) Friday night,
• Then rain Saturday through Sunday.
• highs 58-56 lows near 46. (seasonal averages high 54 low 41).

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Forecast for the Cascades in Lane County:

• Mostly cloudy and a bit colder with rain and snow showers likely (70%) today (0.25 in. of rain possible, 2 in. of snow possible), evening rain and snow showers likely (60%), just partly cloudy late tonight (0.10 in. of rain possible),
• Mostly cloudy with rain and snow Tuesday afternoon and evening (0.25 in. of rain possible, 1-3 in. of snow possible), a good (50%) chance of rain and snow late at night,
• AM rain and snow, rain and just a bit warmer Wednesday, evening rain, then rain late Wednesday night.
• snow level 3,000 ft. today and tonight, 2,500 ft. Tuesday, 4,000 ft. Tuesday night, 5,500 ft. rising to 7,000 ft. Wednesday, then 6,000 ft. Wednesday night.
• highs 35-44 lows 20-30.
• Mostly cloudy with rain and snow and a bit cooler Thursday, rain and snow likely (70%) at night,
• Rain and snow showers likely (70%) Friday, mostly cloudy with a good (50%) chance of  rain and snow showers Friday night,
• Rain and snow likely (70%) Saturday, rain and snow Saturday night,
• Then rain and snow likely (70%) Sunday.
• snow level 5,000 ft. Thursday through Friday night, 4,500 ft. Saturday, 4,000 ft. Saturday night, then 3,000 ft. Sunday.
• highs 42-39 lows near 28.

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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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