Here is my new weekly weather quiz question. What is  “Residual Moisture?” 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 ridge of high pressure, called an “Omega Block” because it is shaped like the Greek letter Omega, (Shaded “Arch” shape with blue arrows) takes over clearing us out and keeping the sunshine around for the rest of the workweek. A cold front crosses the Oregon coast Saturday with another front right behind it and you know what that means, rainy weather. More active weather Sunday from a complex frontal system.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 3 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: None At This Time.

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Eugene-Springfield Pollen Count:

Grass………. Low (0)

Trees………. High (358)

Last Counted: 3/24/16

Data Courtesy of Oregon Allergy Associates.

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

• Partly cloudy with patchy fog late tonight and Tuesday AM, mostly sunny and a bit warmer in the afternoon, clear Tuesday night,
• Sunny and a bit warmer Wednesday and Thursday, clear at night.
• lows 35-39 highs 60-68.
• Sunny and a bit warmer Friday, mostly clear Friday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers Saturday and Saturday night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday, then mostly cloudy with a (40%) chance of showers Sunday night and Monday.
• highs 69-57 lows near 42. (seasonal averages high 58 low 38).

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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 a slight (20%) chance of showers this evening, partly cloudy late tonight and Tuesday AM, sunny and a bit warmer Tuesday afternoon, Wednesday and Thursday, clear to mostly clear at night,
• lows near 40 highs 62-73.
• Sunny and a bit warmer Friday, mostly clear at night,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers Saturday, partly cloudy with a (30%) chance of showers Saturday night,
• Mostly cloudy with a (30%) chance of showers and a bit cooler Sunday, a slight (20%) chance of showers at night,
• Then mostly cloudy and a bit cooler with a (40%) chance of rain Monday.
• highs 70-60 lows 46-42 warming to 44 Monday. (seasonal averages high 59 low 40).

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

• Partly cloudy tonight and Tuesday AM, sunny and a bit warmer Tuesday afternoon, Wednesday, and Thursday (cooler), clear each night,
• lows 40-46 highs 57-67 cooling to 62 Thursday.
• Sunny and a bit cooler Friday, mostly clear at night,
• Partly cloudy with a slight (20%) chance of showers and a bit cooler Saturday and Saturday night,
• Mostly cloudy and a bit cooler with a (30%) chance of showers Sunday and Sunday night,
• Then mostly cloudy with a (40%) chance of rain Monday.
• highs 62-55 lows near 45. (seasonal averages high 54 low 42).

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a slight (20%) chance of evening rain and snow showers tonight, becoming partly cloudy late at night.
• A mix of clouds and sun and warmer Tuesday, partly cloudy in the evening, clear late late Tuesday night,
• Sunny and a bit warmer Wednesday and Thursday, mostly clear both nights.
• snow level 3,000 ft. tonight, free air freezing level 4,500 ft. rising to 6,000 ft. Tuesday, 6,500 ft. Tuesday night, 6,500 ft. rising to 10,000 ft. Wednesday afternoon, 9,000 ft. Wednesday night and Thursday, then 11,000 ft. Thursday night.
• lows 24-32 highs 46-58.
• Mostly sunny and a bit cooler Friday, mostly clear Friday night,
• Partly cloudy with a slight (20%) chance of showers and a bit cooler Saturday and Saturday night,
• Then a mix of clouds and sun with a (30%) chance of rain and snow showers Sunday, a (40%) chance of showers at night,
• Then mostly cloudy and a bit cooler with a (40%) chance of rain and snow showers Monday.
• free air freezing level 11,000 ft. Friday, 10,000 ft. Friday night, snow level 7,500 ft. Saturday, 6,500 ft. Saturday night, 5,500 ft. Sunday, 6,000 ft. Sunday night, then 5,000 ft. Monday.
• highs 54-45 lows 34-32.

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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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