Here is my weekly weather quiz question. What are “Sastrugi?” 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) brings onshore airflow and increased chances of wet weather. A surface frontal system has returned cooler air and the chance of showers. A high pressure ridge takes over keeping the rain away for a while. A frontal system will be lurking just offshore Sunday morning, but it looks dry and should only cool us a bit for Mother’s Day.

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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 13 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 cloudy with a good (50%) chance of showers tonight (0.10 in. of rain possible),
• Mostly cloudy with occasional AM drizzle, a bit cooler with afternoon showers likely (70%) Wednesday (0.10 in. of rain possible), a good (50%) chance of showers Wednesday night (0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of showers Thursday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late at night,
• Then partly cloudy and a bit warmer Friday and Friday night.
• lows 50-45 highs 62-69.
• Mostly sunny Saturday (warmer) and Mother’s Day Sunday (cooler), mostly clear Saturday night,  partly cloudy Sunday night through Monday night,
• Then and a bit warmer mostly sunny Tuesday.
• highs 77-69 warming to 72 Monday lows 48-44. (seasonal averages high 64 low 42).

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Eugene-Springfield Pollen Count:

Grass………. High (20)

Trees………. High (95)

Last Counted: 5/03/16

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly cloudy with showers tonight,
• Showers likely (70%) and a bit cooler Wednesday, cloudy with showers likely (60%) at night,
• Cloudy with a (40%) chance of showers Thursday, mostly cloudy with a slight (20%) chance of showers Thursday night,
• Then partly cloudy and a bit warmer Friday and Friday night.
• lows 50-47 highs 66-75.
• Partly cloudy a bit warmer Saturday through Monday (a bit cooler Sunday (Mother’s Day) and Monday), mostly clear Monday night,
• Then mostly sunny and a bit warmer Tuesday.
• highs 79-74  warming to 76 Tuesday lows 49-45. (seasonal averages high 67 low 45).

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

• Cloudy with scattered showers likely (70%) this evening, showers late tonight,
• Mostly cloudy with showers likely (70%) and a bit cooler Wednesday, cloudy with a (40%) chance of coastal showers while inland showers likely (60%) Wednesday night,
• Cloudy with a (40%) chance of showers and a bit cooler Thursday, mostly cloudy with a slight (20%) chance of evening coastal showers while a slight (20%) chance of inland showers Thursday night,
• Then partly cloudy and a bit warmer Friday and Friday night.
• lows 52-49 highs 58-65.
• Sunny Saturday, partly cloudy Saturday night (Mother’s Day Sunday) through Monday night,
• Then sunny and a bit warmer Tuesday.
• highs 60-62 warming to 64 Tuesday lows near 50. (seasonal averages high 58 low 45)

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Forecast for the Cascades in Lane County:

• Mostly cloudy with showers and a chance of thunderstorms this evening, decreasing showers late tonight (0.25 in. of rain possible, more in storms),
• Mostly cloudy and a bit cooler with showers and a slight (20%) chance of thunderstorms Wednesday (0.25 in. of rain possible, more in storms),  cloudy with evening showers likely (70%) and a slight (20%) chance of thunderstorms, then a good (50%) chance of showers at night (0.25 in. of rain possible, more in storms),
• Mostly cloudy with a good (50%) chance of showers and a bit cooler Thursday, a (30%) chance of evening showers, just mostly Thursday night,
• A mix of clouds and sun and a bit warmer Friday, then just partly cloudy late at night.
• snow level 9,000 ft. tonight, above 8,000 ft. Wednesday, 9,000 ft. Wednesday night, 8,000 ft. Thursday and Thursday night, free air freezing level 10,000 ft. Friday, then 11,000 ft. Friday night.
• lows 37-35 highs 53-48 warming to 58 Friday.
• Partly cloudy and a bit warmer with Saturday and Saturday night,
• Mostly sunny Sunday (Mother’s Day), partly cloudy and a bit cooler Sunday night through Monday night,
• Then mostly sunny and a bit warmer Tuesday.
• free air freezing level 12,000 ft. Saturday through Sunday, 11,000 ft. Sunday night, 10,000 ft. Monday, then 11,000 ft. Monday night and Tuesday.
• highs 64-59 warming to 62 Tuesday lows 42-37.

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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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