Here is my new weekly weather quiz question. What is “SKYWARN?”  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 low (Shaded “U” shape with blue arrows) is moving away from us. It’s a bit like a roller coaster as  high pressure (Shaded “Arch” shape with blue arrows) returned Monday. By mid-week low pressure returns. For Wednesday a frontal system approaches the Pacific Northwest from the northwest increasing our rain chances.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 30 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 28 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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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 the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly sunny and warmer today, partly cloudy tonight,
• Mostly sunny Wednesday AM, partly cloudy and a bit cooler with a slight (20%) chance of showers Wednesday afternoon and evening, becoming mostly cloudy with a slight (20%) chance of evening showers,  a good (50%) chance of showers late Wednesday night (under 0.10 in. of rain possible) and Thursday AM, showers likely (70%) in the afternoon, cloudy with evening showers likely (70%), then a good (50%) chance of showers late Thursday night.
• highs 75-58 lows 47-45.
• Mostly cloudy and a bit warmer with a good (50%) chance of showers Friday through Sunday night,
• Then cloudy with a (40%) chance of showers Monday.
• highs 59-64 lows 47-49. (seasonal averages high 67 low 44.)

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Eugene-Springfield Pollen Count:

Grass………. Low (0)

Trees………. Low (2)

Last Counted: 5/16/16

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Some AM clouds, sunny and warmer this afternoon, mostly clear this evening, partly cloudy late tonight and Wednesday AM, sunny and a bit cooler in the afternoon, mostly cloudy with a (30%) chance of showers Wednesday night (under 0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of AM showers, colder with showers likely (60%) Thursday afternoon and Thursday night.
• highs 79-59 lows 50-45.
• Mostly cloudy and cooler with showers likely (60%) Friday and in the evening, mostly cloudy and a bit warmer with a (40%) chance of showers late Friday night through Sunday, then cloudy with a (40%) chance of showers Sunday night and Monday.
• highs 64-72 cooling to 67 Monday lows 47-50. (seasonal averages high 70 low 48).

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

• Some AM clouds, sunny and a bit warmer this afternoon, partly cloudy tonight,
• Sunny Wednesday, becoming mostly cloudy with a (30%) chance of showers Wednesday night (under 0.10 in. of rain possible),
• Mostly cloudy a good (50%) chance of AM showers, then showers likely (60%) and cooler Thursday and Thursday night.
• highs 63-56 lows 50-48.
• Mostly cloudy with showers likely (60%) Friday and Friday night,
• Mostly cloudy with a good (50%) chance of showers Saturday through Sunday, then cloudy with a (40%) chance of showers Sunday night and Monday.
• highs 58-62 cooling to 58 Monday lows 48-52. (seasonal averages high 59 low 47)

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Forecast for the Cascades in Lane County:

• Sunny and a bit warmer today,  partly cloudy tonight,
• Mostly sunny Wednesday AM, partly cloudy and a bit cooler with a slight (20%) chance of showers in the afternoon, mostly cloudy with a good (50%) chance of showers Wednesday night,
• Mostly cloudy with a good (50%) chance of rain and snow showers Thursday AM, rain and snow showers likely (70%) and colder in the afternoon, cloudy with evening rain and snow showers, then a good (50%) chance of rain and snow showers late Thursday night.
• free air freezing level 12,000 ft. today and tonight, snow level above 8,000 ft. Wednesday and Wednesday night, then 4,500 ft. Thursday and Thursday night.
• highs 65-43 lows 40-33.
• Mostly cloudy with a good (50%) chance of rain and snow showers Friday AM, rain and snow showers likely (70%) with a slight (20%) chance of thunderstorms and cooler in the afternoon and evening, a good (50%) chance of rain and snow showers late Friday night and Saturday AM, rain and snow showers likely (70%) with a slight (20%) chance of thunderstorms and a bit warmer Saturday afternoon and evening, a good (50%) chance of showers late Saturday night through Monday.
• snow level 4,000 ft. Friday, 5,000 ft. Friday night and Saturday, then 6,500 ft. Saturday night, 6,000 ft. Sunday, 6,500 ft. Sunday night, then 6,000 ft. Monday.
• highs 44-48 lows 33-35.

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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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