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 has kept the showers around as it sent another frontal system into Oregon. The parade of storms continues with this frontal system Monday. Another cold front (shown well to our East) will have already pushed through. Note: Don’t forget that this is the weekend when Daylight Saving Time begins. Remember to “Spring Forward” and turn your clocks ahead one hour at bedtime Saturday night.  official change occurs at 2:00 am Sunday. The Fire Department reminds you to check the batteries in your smoke detectors, CO2 detectors and  Radon detectors if you have them.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 35 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 7 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 19 in the Good category measuring Particulate Matter.

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

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Advisories:

• A FLOOD WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH MONDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY,
• A WINTER STORM WARNING IS IN EFFECT FROM 10 AM SATURDAY UNTIL 11 PM MONDAY  FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES AND THE SISKIYOU MOUNTAINS.
• A WIND ADVISORY IS IN EFFECT FROM 4 AM UNTIL 10 AM SATURDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN AND WESTERN LAKE COUNTY.

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

• Mostly cloudy and a bit cooler with rain this afternoon (0.10 in. of rain possible), evening showers likely (70%), rain late tonight (0.25 in. of rain possible),
• Mostly cloudy with rain a bit cooler Saturday (0.50 in. of rain possible) and Saturday night (0.25 in. of rain possible),
• Mostly cloudy with rain Sunday and in the evening, showers at night.
• highs near 53 lows 43-39.
• Mostly cloudy with showers Monday and Monday night,
• Cloudy and a bit warmer with showers likely (70%) Tuesday, mostly cloudy with a (40%) chance of showers Tuesday night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of showers Wednesday, then just partly cloudy Wednesday night and Thursday.
• highs 52-60 lows near 39. (seasonal averages high 56 low 37).

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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 rain and a bit cooler this afternoon (0.15 in. of rain possible), evening showers likely (70%), rain likely (70%) late tonight (0.15 in. of rain possible),
• Mostly cloudy with rain and a bit cooler Saturday (0.50 in. of rain possible, afternoon snow level 3,500 ft. falling to 3,000 ft.), rain at night (0.20 in. of rain possible, snow level 3,000 ft.),
• Mostly cloudy with rain and a bit warmer Sunday (AM snow level 3,500 ft.) and breezy (Wind: SE 5-10 mph increasing and shifting to SW 15-25 mph), then showers Sunday night.
• highs 57-53 lows 44-40.
• Rain and snow showers Monday AM, showers and a bit cooler Monday afternoon, showers likely (60%) Monday night,
• Cloudy with a good (50%) chance of showers Tuesday, mostly cloudy with a (40%) chance of showers at night,
• Mostly cloudy with a slight (20%) chance of showers and a bit warmer Wednesday, then just partly cloudy Wednesday night and Thursday.
• highs 53-63 lows 40-36. (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 rain today (0.30 in. of rain possible), evening showers likely (70%), rain late tonight (0.30 in. of rain possible) and breezy (Wind: SW 5-10 mph increasing to S 20-30 mph at the shore while S 10-15 mph inland),
• Mostly cloudy with rain and a bit cooler Saturday (0.80 in. of rain possible) and breezy (Wind: SW 15-25 mph), rain Saturday night (0.40 in. of rain possible),
• Rain Sunday and windy (Wind: SW 20-30 at the shore while S 10-15 mph increasing to SW 20-25 mph inland in the afternoon), then showers Sunday night.
• highs 56-53 lows 47-43.
• Mostly cloudy with showers Monday, showers likely (70%) Monday night,
• Cloudy with a good (50%) chance of showers Tuesday, mostly cloudy with a (40%) chance of showers Tuesday night,
• Mostly cloudy with a slight (20%) chance of showers and a bit warmer Wednesday, then just partly cloudy and a bit warmer Wednesday night and Thursday.
• highs 52-62 lows 42-45. (seasonal averages high 54 low 41).

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Forecast for the Cascades in Lane County:

• Cloudy with rain and a bit cooler this afternoon (0.25 in. of rain possible, 1 in. of snow possible), rain and snow showers this evening, rain and snow late tonight (0.25 in. of rain possible, 1-3 in. of snow possible),
• Mostly cloudy with rain and snow and a bit cooler Saturday (0.50 in. of rain possible, 4-8 in. of snow possible), rain and snow Saturday night,
• Mostly cloudy with rain and snow Sunday and in the evening, then rain and snow showers late at night.
• snow level 5,500 ft. today, 5,000 ft. tonight, 3,500 ft. Saturday and Saturday night, 4,000 ft. Sunday, then 3,500 ft. Sunday night.
• highs 42-34 lows 30-26.
• Mostly cloudy with snow showers and a bit cooler Monday, rain and snow showers likely (70%) Monday night,
• Rain and snow showers likely (70%) and a bit warmer Tuesday, a good (50%) chance of rain and snow showers at night,
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of rain and snow showers Wednesday, then just partly cloudy Wednesday night and Thursday.
• snow level 3,000 ft. Monday through Tuesday, 3,500 ft. Tuesday night, then 4,500 ft. Wednesday, free air freezing level 7,000 ft. Wednesday night, then 9,000 ft. Thursday.
• highs 33-43 lows 24-28.

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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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