Here is my weekly weather quiz question. What is a “Return Stroke?”  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 high pressure ridge is getting stronger bringing dry weather and much warmer temperatures today through Friday. Some of those high temperatures will be well above normal for this time of the year and therefore we could set some new record highs. A weak cold front slides in Friday just cooling us down a bit. There will be a slight chance of showers with the cooler temperatures behind that front on Saturday.

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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 5 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 14 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 (264)

Last Counted: 4/05/16

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 tonight,
• Sunny and warmer Wednesday and Thursday, clear Wednesday night, partly cloudy Thursday night,
• Partly cloudy and cooler Friday, then mostly cloudy with a slight (20%) chance of showers Friday night.
• lows 38-48 cooling to 45 Friday night highs 79-84 cooling to 72 Friday.
• A mix of clouds and sun and cooler with a slight (20%) chance of showers Saturday, partly cloudy with a slight (20%) chance of showers Saturday night,
• A mix of clouds and sun Sunday, partly cloudy at night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Monday and Tuesday,  partly cloudy with a slight (20%) chance of showers Monday night.
• highs 65-59 lows 44-40 warming back to 44 Monday night. (seasonal averages high 59 low 39).

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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 clear tonight,
• Sunny and warmer Wednesday and Thursday, mostly clear in the evening, partly cloudy late Thursday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of afternoon showers Friday, then mostly cloudy and colder with a slight (20%) chance showers Friday night.
• lows 44-56 cooling to 53 Thursday night highs 84-86 cooling to 75 Friday.
• Mostly cloudy and cooler with a slight (20%) chance showers Saturday through Monday, then mostly cloudy with a (30%) chance of showers Monday night and Tuesday.
• highs 69-60 lows near 45. (seasonal averages high 60 low 41).

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

• Mostly clear tonight,
• Sunny and warmer Wednesday and Thursday, clear Wednesday night, mostly clear in the evening, partly cloudy late Thursday night,
• Just mostly cloudy and a bit cooler Friday, then mostly cloudy with a slight (20%) chance of showers Friday night.
• lows 47-52 cooling to 49 Friday night highs 68-59.
• Mostly cloudy with a slight (20%) chance of showers Saturday and at night,
• Mostly cloudy Sunday and Sunday night,
• Mostly cloudy with a slight (20%) chance of showers Monday, then a (30%) chance of showers Monday night and Tuesday.
• highs 58-56 lows near 46. (seasonal averages high 54 low 42).

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Forecast for the Cascades in Lane County:

• Mostly clear tonight,
• Mostly sunny and a bit warmer Wednesday, clear Wednesday night,
• Sunny Thursday, mostly clear at night,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers Friday, then mostly cloudy with a (40%) chance of showers Friday night.
• free air freezing level 10,000 ft. rising to 12,000 ft. tonight, 12,000 ft. Wednesday, 13,000 ft. Wednesday night and Thursday, 12,000 ft. Thursday night, snow level above 8,000 ft. Friday and Friday night.
• lows 30-45 cooling to 33 Friday night highs 66-72 cooling to 62 Friday.
• A mix of clouds and sun with a (30%) chance of showers and cooler Saturday, partly cloudy with a (30%) chance of showers at night,
• A mix of clouds and sun and a bit warmer Sunday, partly cloudy at night,
• A mix of clouds and sun and a bit cooler with clouds and sun with a slight (20%) chance of showers Monday, partly cloudy with a (30%) chance of showers Monday night,
• Then a mix of clouds and sun and a bit cooler with a (30%) chance of rain and snow showers Tuesday.
• snow level above 8,000 ft. Saturday and Saturday night, free air freezing level 10,000 ft. Sunday, 9,000 ft. Sunday night, snow level 7,500 ft. Monday and Monday night, then 5,500 ft. Tuesday.
• highs 52-55 cooling to 43 Monday lows 33-30 warming back to 33 Monday 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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