Here is my weekly weather quiz question. What is “Shear?” 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 pressure trough will slowly move to the east away from us, but in the meantime look for the chance of showers to remain with us. High pressure (Shaded “Arch” shape with blue arrows on previous graphic) will move in and dry us out with plenty of sunshine Sunday into next week. Our next potentially weather-changing weak surface frontal system should move through the Pacific Northwest by Thursday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 18 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 14 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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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with a good (50%) chance of scattered showers and a slight (20%) chance of thunderstorms, small hail possible this evening, a good (50%) chance of showers late tonight (under 0.10 in. of rain possible, more in storms),
• A mix of clouds and sun Friday with good (50%) chance of AM showers, showers and a bit warmer with a slight (20%) chance of thunderstorms in the afternoon and evening (under 0.10 in. of rain possible, more in storms), partly cloudy with a (40%) chance of showers late Friday night (under 0.10 in. of rain possible),
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Saturday (under 0.10 in. of rain possible), partly cloudy at night and Sunday AM, mostly sunny and warmer in the afternoon, then mostly clear Sunday night.
• lows 48-42 warming to 46 Sunday night highs 69-78.
• Mostly sunny and warmer Monday, mostly clear at night,
• Sunny and a bit warmer Tuesday, mostly clear Tuesday night,
• Mostly sunny and a bit cooler Wednesday, then partly cloudy Wednesday night and Thursday.
• highs 84-86 cooling to near 80 Thursday lows 46-53. (seasonal averages high 73 low 48).

 

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Eugene-Springfield Pollen Count:

Grass………. Moderate (19)

Trees………. Low (10)

Last Counted: 6/16/16

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly cloudy with showers likely (60%) and a slight (20%) chance of thunderstorms this  evening, scattered showers likely (60%) late tonight (0.10 in. of rain possible),
• Mostly cloudy with scattered AM showers, showers with a slight (20%) chance of isolated thunderstorms and a bit warmer Friday afternoon and evening (0.10 in. of rain possible), partly cloudy with a slight (20%) chance of showers late Friday night (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of showers Saturday AM, sunny and a bit warmer in the afternoon, mostly clear Saturday night,
• Sunny and a bit warmer Sunday, then clear at night.
• lows 48-50 cooling to 47 Saturday night, warming to 52 Sunday night highs 69-83.
• Sunny and a bit warmer Monday and Tuesday, clear both nights,
• Mostly sunny and a bit cooler Wednesday, mostly clear Wednesday night,
• Then sunny and a bit Thursday.
• highs 88-93 cooling to 82 Thursday lows near 57. (seasonal averages high 76 low 52).

 

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

• Mostly cloudy with a (30%) chance of scattered showers and a slight (20%) chance of thunderstorms this evening, a (30%) chance of scattered showers tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of scattered showers Friday AM, a (30%) chance of scattered showers and a slight (20%) chance of thunderstorms in the afternoon (under 0.10 in. of rain possible), mostly cloudy with a (30%) chance of scattered evening showers, a slight (20%) chance of showers late Friday night,
• Partly cloudy with a slight (20%) chance of showers in the AM (under 0.10 in. of rain possible), sunny and a bit warmer Saturday afternoon, mostly clear at night,
• Sunny Sunday, then clear Sunday night.
• lows 49-52 highs 62-64.
• Sunny and a bit warmer Monday and Tuesday, clear Monday night, clear Tuesday evening, partly cloudy late Tuesday night and Wednesday AM, sunny and a bit cooler in the afternoon, mostly clear Wednesday night,
• Then mostly sunny and a bit cooler Thursday.
• highs 68-70 cooling to 64 Wednesday and Thursday lows near 53. (seasonal averages high 62 low 51)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with showers and a slight (20%) chance of thunderstorms, small hail possible  this evening, a good (50%) chance of showers late tonight and Friday AM, showers with a slight (20%) chance of thunderstorms Friday afternoon and evening (0.25 in. of rain possible, more in storms), showers likely (70%) late Friday night (0.10 in. of rain possible),
• AM clouds, partly cloudy and a bit warmer with a slight (20%) chance of showers Saturday, just partly cloudy Saturday night,
• Mostly sunny and a bit warmer Sunday, clear at night.
• snow level 6,000 ft. tonight and Friday, 6,500 ft. Friday night, 6,000 ft. Saturday, 8,000 ft. Saturday night, free air freezing level 10,000 ft. Sunday, then then 12,000 ft. Sunday night.
• lows 33-36 cooling to 32 Saturday night warming to 42 Sunday night highs 52-66.
• Sunny and a bit warmer Monday, clear Monday night,
• Mostly sunny and a bit warmer Tuesday and Wednesday (a bit cooler), mostly clear both nights,
• Mostly sunny Thursday AM, then partly cloudy and a bit cooler in the afternoon.
• free air freezing level 12,000 ft. Monday, 14,000 ft. Monday night, 15,000 ft. Tuesday and Tuesday night, 14,000 ft. Wednesday and Wednesday night, then 13,000 ft. Thursday.
• highs 74-80 cooling to 72 Thursday lows 45-52 cooling to 48 Wednesday 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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