Here is my new weekly weather quiz question. What is  “Radar Reflectivity?” 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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There will be a short break as a weak short-lived high pressure ridge (Shaded “Arch” shape with blue arrows) slides in for your Wednesday. An upper level trough of low pressure (Shaded “U” shape with blue arrows in previous graphic) replaces the high pressure. Then rain returns as a frontal system (look to upper left corner) will be marching across Oregon Wednesday night and early Thursday. By Saturday a frontal system will be poised offshore ready to move in by nightfall. With some luck the precipitation might stop for at least part of Easter Sunday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 12 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 (159)

Last Counted: 3/22/16

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:

• Mostly cloudy with a slight (20%) chance of showers tonight (under 0.10 in. of rain possible),
• Mostly cloudy and a bit warmer Wednesday with a slight (20%) chance of afternoon rain, rain Wednesday night (0.25 in. of rain possible),
• A good (50%) chance of showers and a bit cooler Thursday (under 0.10 in. of rain possible), a slight (20%) chance of evening showers, a (40%) chance of showers at night (under 0.10 in. of rain possible),
• Mostly cloudy with a (40%) chance of showers Friday, then just partly cloudy Friday night.
• lows 42-44 cooling to 38 Friday night highs 59-56.
• More clouds to mostly cloudy and warmer Saturday, mostly cloudy with a good (50%) chance of rain Saturday night and Easter Sunday (a bit cooler), a (40%) chance of showers Sunday night,
• Mostly cloudy with a (30%) chance of showers Monday, partly cloudy with a slight (20%) chance of showers at night,
• Then a mix of clouds and sun and a bit warmer Tuesday.
• highs 58-54 warming to 57 Monday lows 42-37. (seasonal averages high 57 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, just mostly cloudy tonight and Wednesday, mostly cloudy with rain Wednesday night (0.10 in. of rain possible),
• A (40%) chance of showers and a bit cooler Thursday (under 0.10 in. of rain possible, AM snow level 3,500 ft.), a slight (20%) chance of showers late Thursday night (under 0.10 in. of rain possible) and Friday, then just mostly cloudy Friday night.
• lows 40-43 cooling to 39 Friday night highs 60-58.
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Saturday, a (30%) chance of rain Saturday night,
• Cloudy with a good (50%) chance of showers and a bit cooler Easter Sunday, mostly cloudy with a (40%) chance of rain and snow showers at night and Monday, a slight (20%) chance of showers Monday night,
• Then mostly cloudy and a bit warmer with a slight (20%) chance of rain and snow showers Tuesday.
• highs 64-56 warming to 60 Tuesday lows near 42. (seasonal averages high 59 low 40).

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

• Mostly cloudy with a slight (20%) chance of evening showers (under 0.25 in. of rain possible), just mostly cloudy late tonight and Wednesday, rain Wednesday night (0.20 in. of rain possible),
• A (40%) chance of rain and cooler Thursday and a bit cooler, mostly cloudy and colder with a slight (20%) chance of coastal showers Thursday night while mostly cloudy in the evening inland and partly cloudy with a slight (20%) chance of inland showers late Thursday night (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of showers Friday, then just mostly cloudy Friday night.
• lows 45-47 cooling back to 45 Friday night highs 57-55.
• Mostly cloudy and a bit warmer Saturday with a slight (20%) chance of rain, a (30%) chance of rain Saturday night,
• Mostly cloudy with a good (50%) chance of showers Easter Sunday through Monday, then mostly cloudy with a slight (20%) chance of showers Tuesday and a bit warmer.
• highs 60-55 lows 45-42. (seasonal averages high 54 low 42).

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Forecast for the Cascades in Lane County:

• Rain and snow showers likely (70%) this evening, a slight (20%) chance of rain and snow showers late tonight (under 0.10 in. of rain possible, 1 in. of snow possible),
• Just mostly cloudy and a bit warmer Wednesday, a good (50%) chance of evening rain and snow, rain and snow late Wednesday night (0.25 in. of rain possible, 1-3 in. of snow possible),
• Mostly cloudy with AM rain and snow showers likely (70%), a good (50%) chance of rain and snow showers and a bit cooler Thursday afternoon, a (40%) chance of rain and snow showers Thursday night,
• A mix of clouds and sun and a bit warmer with a good (50%) chance of rain and snow showers Friday, then decreasing clouds to just partly cloudy Friday night.
• snow level 3,000 ft. tonight, free air freezing level 4,000 ft. rising to 4,500 ft. Wednesday afternoon, snow level 5,000 ft. Wednesday night, 4,000 ft. Thursday, 3,500 ft. Thursday night, 3,000 ft. Friday, then free air freezing level 3,500 ft. Friday night.
• lows 26-32 cooling back to 25 Friday night highs 45-38.
• A mix of clouds and sun and a bit warmer Saturday, more clouds to mostly cloudy with a good (50%) chance of rain and snow at night,
• Mostly cloudy and colder with a good (50%) chance of rain and snow Easter Sunday, a good (50%) chance of rain and snow showers Sunday night,
• Mostly cloudy with a (40%) chance of rain and snow showers and a bit warmer Monday, then a (40%) chance of rain and snow showers Monday night and Tuesday.
• free air freezing level 6,000 ft. Saturday, snow level 6,000 ft. Saturday night, 4,500 ft. Sunday, 3,500 ft. Sunday night, 3,000 ft. Monday, 3,500 ft. Monday night, then 4,000 ft. Tuesday.
• highs 45-34 warming back to 45 Tuesday lows 25-30 cooling back to 25 Sunday night.

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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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