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 returned cooler air and the chance of showers. A high pressure ridge takes over now keeping the rain away for a while starting this afternoon. A frontal system will be sliding the Pacific Northwest  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 24 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 17 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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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:

• Partly cloudy tonight,
• Partly cloudy and warmer Friday, partly cloudy Friday night,
• Mostly sunny Saturday, clear in the evening, partly cloudy Saturday night,
• AM clouds, partly cloudy and a bit cooler Sunday afternoon and evening, becoming mostly cloudy late at night.
• lows 50-44 highs 82-67
• Partly cloudy and a bit cooler Monday, and Monday night,
• Mostly sunny and a bit warmer Tuesday and Wednesday, mostly clear Tuesday night, clear Wednesday night,
• Then sunny and a bit warmer Thursday.
• highs 67-80 lows near 46. (seasonal averages high 65 low 42.)

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Eugene-Springfield Pollen Count:

Grass………. Moderate (14)

Trees………. Moderate (35)

Last Counted: 5/05/16

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly cloudy with a (30%) chance of showers this evening, a (30%) chance of isolated showers late tonight,
• Mostly cloudy and warmer with isolated showers Friday AM, isolated afternoon thunderstorms in the afternoon, partly cloudy with isolated evening thunderstorms, partly cloudy late Friday night,
• Sunny and a bit warmer Saturday, mostly clear in the evening, partly cloudy late at night,
• AM clouds, partly cloudy and a bit cooler Sunday afternoon (Mother’s Day), then partly cloudy Sunday night.
• lows 52-46 highs 79-82.
• Mostly sunny Monday, mostly clear Monday night,
• Mostly sunny and a bit warmer Tuesday and Wednesday, mostly clear both nights,
• Then sunny and a bit warmer Thursday.
• highs 72-85 lows 45-52. (seasonal averages high 68 low 45).

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

• Mostly cloudy with isolated inland showers tonight,
• Mostly cloudy Friday, partly cloudy Friday night through Saturday AM, sunny and a bit cooler in the afternoon, mostly clear in the evening, mostly cloudy late Saturday night,
• AM clouds and drizzle, partly cloudy and a bit cooler Sunday afternoon (Mother’s Day), then just partly cloudy Sunday night.
• lows 52-48 highs 66-63.
• Mostly sunny and a bit warmer Monday, mostly cleat at night,
• Mostly sunny and warmer Tuesday, mostly clear at night
• Then sunny and a bit warmer Wednesday and Thursday, clear Wednesday night.
• highs 63-73 lows 48-53. (seasonal averages high 58 low 45)

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of evening showers and thunderstorms, a slight (20%) chance of showers late tonight (0.10 in. of rain possible, more in storms),
• Mostly cloudy with a slight (20%) chance of afternoon showers and thunderstorms Friday, partly cloudy with a slight (20%) chance of showers and thunderstorms in the evening, just partly cloudy late at night,
• Mostly sunny Saturday afternoon, partly cloudy Saturday night,
• Then partly cloudy and a bit cooler Sunday (Mother’s Day) and Sunday night.
• snow level above 8,000 ft. tonight through Friday night, free air freezing level 12,000 ft. Saturday, 13,000 ft. Saturday night, free air freezing level 11,000 ft. Sunday, then 10,000 ft. Sunday night.
• lows 38-42 cooling to 34 Sunday night highs 65-56.
• Partly cloudy Monday and Monday night,
• Mostly sunny and a bit warmer Tuesday and (cooler) Wednesday, clear both nights,
• Then sunny and a bit warmer Thursday.
• free air freezing level 10,000 ft. Monday through Tuesday, then 11,000 ft. Tuesday night through Thursday.
• highs 57-67 cooling to 64 Wednesday warming back to 67 Thursday lows 42-38 warming back to 42 Tuesday 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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