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 will slowly weaken and move eastward allowing a weak disturbance to slide in today just cooling us down a bit, but only a slight chance of rain. A frontal system will bring more cool air into the Pacific Northwest Saturday and again only a slight chance of rain. More frontal systems will line up to bring a little better chance or rain to Oregon.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 23 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 21 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 21 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………. Moderate (6)

Trees………. Very High (637)

Last Counted: 4/07/16

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:

• AM sunshine, partly cloudy and much cooler this afternoon, mostly cloudy tonight,
• Mostly cloudy and cooler Saturday, partly cloudy Saturday night,
• A mix of clouds and sun and a bit cooler Sunday, then partly cloudy at night.
• highs 74-64 lows 48-43.
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Monday and Monday night,
• A (40%) chance of showers Tuesday, cloudy with a good (50%) chance of showers at night,
• Cloudy with a good (50%) chance of rain and a bit cooler Wednesday, a good (50%) chance of rain Wednesday night,
• Then mostly cloudy with a (40%) chance of showers and a bit warmer Thursday.
• highs 60-56 warming to 58 Thursday lows 43-45 cooling back to 43 Wednesday 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 cloudy and a bit cooler today, a slight (20%) chance of rain and drizzle tonight,
• Mostly cloudy with a slight (20%) chance of showers Saturday AM, mostly cloudy and turning cooler late Saturday night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday AM, mostly cloudy in the afternoon and Sunday night.
• highs 77-67 lows 49-45.
• Mostly cloudy with a slight (20%) chance of showers Monday, a (30%) chance of showers and a bit cooler Monday night and Tuesday, showers likely (70%) Tuesday night,
• Rain likely (70%) and a bit cooler Wednesday, becoming cloudy with a good (50%) chance of evening showers, then a (40%) chance of rain and snow showers late Wednesday night and Thursday.
• highs 66-58 lows 45-42. (seasonal averages high 61 low 41).

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

• Patchy AM coastal fog, mostly cloudy and a bit cooler today, mostly cloudy with a slight (20%) chance of rain and drizzle tonight, patchy coastal fog late,
• Patchy AM coastal fog with a slight (20%) chance of showers, just mostly cloudy Saturday afternoon, a slight (20%) chance of showers late Saturday night,
• Mostly cloudy Sunday with a slight (20%) chance of AM coastal showers and a bit cooler, just mostly cloudy Sunday night,
• highs 64-56 lows 48-46.
• Mostly cloudy and a bit warmer with a slight (20%) chance of showers Monday afternoon, a (30%) chance of showers Monday night and Tuesday, showers likely (70%) Tuesday night,
• Rain and a bit cooler Wednesday, then mostly cloudy with a (40%) chance of showers Wednesday night and Thursday.
• highs 59-55 lows 46-44. (seasonal averages high 54 low 42).

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Forecast for the Cascades in Lane County:

• AM sunshine, partly cloudy and a bit cooler today, mostly cloudy with a slight (20%) chance of showers late tonight,
• Patchy AM drizzle, a mix of clouds and sun with a slight (20%) chance of showers and thunderstorms Saturday afternoon and evening, just mostly cloudy at night,
• Partly cloudy in the AM, a mix of clouds and sun and a bit cooler Sunday afternoon, then mostly cloudy Sunday night.
• free air freezing level 13,000 ft. today, snow level 10,000 ft. tonight, above 8,000 ft. Saturday and Saturday night, free air freezing level 11,000 ft. Sunday, then 10,000 ft. Sunday night.
• highs 72-54 lows 40-32.
• Mostly cloudy and a bit cooler with a (30%) chance of  showers Monday, a (40%) chance of showers Monday night,
• Mostly cloudy with  a (40%) chance of rain and snow showers and a bit cooler Tuesday, rain and snow showers likely (70%) at night,
• Rain and snow showers likely (70%) and a bit cooler Wednesday, cloudy with a good (50%) chance of rain and snow showers Wednesday night,
• Then mostly cloudy with a good (50%) chance of rain and snow showers Thursday.
• snow level 7,500 ft. Monday, 8,000 ft. Monday night, 5,500 ft. Tuesday and Tuesday night, 5,000 ft. Wednesday and Wednesday night, then 4,000 ft. Thursday.
• highs 49-42 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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