Here is my weekly weather quiz question for the last time. What is a “Return Stroke?” Here is the correct answer. A Return Stroke is an electrical discharge that propagates upward along a lightning channel from the ground to the cloud. I’ll have a new weekly weather quiz question for you starting Monday. 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 continuing the cooling in the Pacific Northwest. Early next week a couple of frontal systems move through Oregon returning the chance of rain through most of next week.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 4 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 16 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 clouds, a mix of clouds and sun this afternoon, partly cloudy this evening, becoming mostly cloudy late tonight and Monday, cloudy with a slight (20%) chance of showers Monday night,
• Then showers likely (70%) and a bit cooler Tuesday and Tuesday night.
• highs 65-60 lows near 45.
• Mostly cloudy and a bit cooler with showers likely (70%) Wednesday and Wednesday night,
• Mostly cloudy and cooler with a good (50%) chance of showers Thursday, mostly cloudy with a (40%) chance of showers at night,
• A mix of clouds and sun with a (40%) chance of showers and a bit warmer Friday, mostly cloudy with a slight (20%) chance of showers Friday night,
• Then a mix of clouds and sun and a bit warmer Saturday.
• highs 59-63 lows near 42. (seasonal averages high 60 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 today through Monday, cloudy with a (30%) chance of showers late Monday night,
• Then mostly cloudy and a bit cooler with showers likely (60%) Tuesday and Tuesday night.
• highs 68-63 lows 45-47 cooling to 43 Tuesday night .
• Mostly cloudy with showers likely (70%) and a bit cooler Wednesday and Wednesday night,
• Mostly cloudy with a (40%) chance of showers Thursday (a bit cooler) through Friday (a bit warmer), then a slight (20%) chance of rain Friday night and Saturday (a bit cooler).
• highs 62-56 warming to 67 Saturday lows 43-40 warming to 44 Friday night. (seasonal averages high 61 low 41).

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

• Mostly cloudy today through Monday, mostly cloudy with a slight (20%) chance of showers late Monday night,
• Mostly cloudy with a (40%) chance of AM showers, showers likely (60%) and a bit warmer Tuesday afternoon and at night.
• highs 57-60 lows 47-50 cooling to 46 Tuesday night.
• Mostly cloudy and a bit cooler with showers likely (70%) Wednesday through Thursday, a (40%) chance of showers Thursday night and Friday (a bit warmer), then mostly cloudy and a bit warmer with a slight (20%) chance of showers Friday night and Saturday (warmer).
• highs 57-53 warming to 60 Saturday lows near 46. (seasonal averages high 55 low 43).

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Forecast for the Cascades in Lane County:

• Partly cloudy and a bit cooler today and this evening, becoming mostly cloudy late tonight,
• Mostly cloudy and a bit cooler Monday with a slight (20%) chance of showers in the afternoon, a (30%) chance of  showers at night,
• Mostly cloudy with showers likely (70%) and a bit cooler Tuesday and Tuesday night.
• snow level 10,000 ft. today, 9,000 ft. tonight, snow level 9,000 ft. Monday, 8,000 ft. Monday night, 6,000 ft. Tuesday, then 4,500 ft. Tuesday night.
• highs 58-49 lows 37-32.
• Mostly cloudy with showers likely (70%) and a bit cooler Wednesday and Wednesday night,
• A bit cooler with a good (50%) chance of showers Thursday and at night,
• A mix of clouds and sun with a (40%) chance of showers Friday, mostly cloudy with a slight (20%) chance of showers Friday night,
• Then a mix of clouds and sun and a bit warmer Saturday.
• snow level 4,000 ft. Wednesday, 4,500 ft. Wednesday night, 3,500 ft. Thursday, 4,000 ft. Thursday night, 3,500 ft. Friday, 5,000 ft. Friday night, then free air freezing level 6,500 ft. Saturday.
• highs 47-43 warming to 48 Saturday lows 30-27 warming back to 30 Friday 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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