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. Today was not as warm as expected in Eugene, but it will be much warmer Thursday which will be well above normal for this time of the year and therefore we could set some a new record high. A weak cold front slides in Friday just cooling us down a bit. A dry cold front will bring more cool air into the Pacific Northwest Saturday. Another weak frontal system brings just a slight chance of showers Monday and Tuesday. Then a better chance of showers Wednesday as another frontal system moves in Wednesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 38 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 25 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 (3)

Trees………. High (420)

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:

• Clear tonight,
• Sunny and warmer Thursday, partly cloudy at night,
• Partly cloudy and cooler Friday, mostly cloudy Friday night,
• A mix of clouds and sun and cooler Saturday, then just partly cloudy Saturday night.
• lows 43-48 cooling back to 43 Saturday night highs 85-66.
• A mix of clouds and sun and a bit cooler Sunday, mostly cloudy at night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Monday and Monday night,
• A mix of clouds and sun with a (30%) chance of showers Tuesday, mostly cloudy with a (40%) chance of showers at night,
• Then mostly cloudy with a good (50%) chance of showers and a bit cooler Wednesday.
• highs 62-56 lows 43-45. (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:

• Clear tonight,
• Sunny and warmer Thursday, mostly clear in the evening, partly cloudy late Thursday night,
• Mostly cloudy and a bit cooler Friday with a slight (20%) chance of afternoon showers, a slight (20%) chance showers Friday night,
• Mostly cloudy and cooler with a (30%) chance showers Saturday, then a slight (20%) chance of showers and much cooler Saturday night.
• lows 50-52 cooling to 45 Saturday night highs 88-68.
• Just mostly cloudy and a bit cooler Sunday, mostly cloudy with a slight (20%) chance of showers Sunday night through Monday night,
• Then mostly cloudy with a good (50%) chance of showers Tuesday through Wednesday (a bit cooler Wednesday).
• highs 65-57 lows 45-43. (seasonal averages high 60 low 41).

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

• Clear tonight,
• Sunny and warmer Thursday, mostly clear in the evening, partly cloudy late at night,
• Just mostly cloudy and a bit cooler Friday, mostly cloudy with a slight (20%) chance of showers Friday night,
• Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Saturday and Saturday night.
• lows 52-47 highs 66-58.
• Mostly cloudy Sunday and Sunday night,
• Mostly cloudy with a slight (20%) chance of showers Monday and Monday night,
• Then mostly cloudy with a (40%) chance of showers Tuesday through Wednesday.
• highs 56-58 cooling to 55 Wednesday lows 47-45. (seasonal averages high 54 low 42).

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Forecast for the Cascades in Lane County:

• Clear tonight,
• Sunny Thursday, mostly clear at night,
• Partly cloudy and a bit cooler Friday, mostly cloudy with a (30%) chance of showers Friday night,
• A mix of clouds and sun with a slight (20%) chance of showers and cooler Saturday, then partly cloudy with a slight (20%) chance of showers at night.
• free air freezing level 13,000 ft. tonight through Thursday night, 12,000 ft. Friday, snow level above 8,000 ft. Friday and Friday night,
• lows 42-32 highs 72-54.
• A mix of clouds and sun and a bit warmer Sunday, mostly cloudy at night,
• Mostly cloudy and a bit cooler with a (30%) chance of rain and snow showers Monday, a (30%) chance of showers Monday night,
• A mix of clouds and sun and a bit cooler with a (30%) chance of rain and snow showers Tuesday, mostly cloudy with  a good (50%) chance of rain and snow showers at night,
• Then mostly cloudy with rain and snow showers likely (70%) and a bit cooler Wednesday.
• free air freezing level 10,000 ft. Sunday, 9,000 ft. Sunday night, snow level 5,500 ft. Monday, 6,000 ft. Monday night and Tuesday, 5,500 ft. Tuesday night, then 4,000 ft. Wednesday.
• highs 53-40 lows near 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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