Here is my 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) moves toward us bringing an increase in marine airflow from the West and that means a change in our weather. A surface frontal system moves through the Pacific Northwest between Wednesday and Thursday enhancing the chance of showers. It’s back to sunshine starting Saturday as High Pressure takes over.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 36 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 9 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 34 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 clear tonight,
• A mix of clouds and sun Wednesday, more clouds with a good (50%) chance of showers late Wednesday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with showers Thursday and in the evening, decreasing showers late Thursday night,
• Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy with a slight (20%) chance of showers Friday afternoon and Friday night.
• lows 5o-54 cooling to 49 highs 77-65 warming to 72 Friday.
• Partly cloudy Saturday AM, mostly sunny and a bit warmer in the afternoon, partly cloudy in the evening, clear at night,
• Then mostly sunny and a bit warmer Sunday, Monday and Tuesday, clear Sunday evening and partly cloudy Sunday night, clear Monday night.
• highs 80-85 lows 52-55 cooling back to 52 Monday night. (seasonal averages high 75 low 49)

 

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Eugene-Springfield Pollen Count:

Grass………. High (112)

Trees………. Moderate (36)

Last Counted: 6/21/16

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly clear this evening, increasing clouds to mostly cloudy late tonight,
• AM clouds, sunny and a bit cooler Wednesday afternoon, partly cloudy in the evening, mostly cloudy with a good (50%) chance of showers late Wednesday night,
• A (40%) chance of showers and a bit warmer Thursday and Thursday night,
• Mostly cloudy Friday AM, sunny and a bit warmer in the afternoon, then mostly clear Friday night.
• lows 52-55 cooling back to 52 Thursday night highs 80-67 warming to 74 Friday.
• Mostly sunny and warmer Saturday and Sunday (a bit cooler), mostly clear Saturday night, partly cloudy Sunday night and Monday (a bit cooler), clear Monday night,
• Then sunny Tuesday.
• highs 83-85 cooling back to 83 Monday lows 57-60. (seasonal averages high 77 low 53)

 

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

• Partly cloudy this evening, mostly cloudy late tonight,
• Cloudy Wednesday AM, partly cloudy in the afternoon, mostly cloudy with a good (50%) chance of coastal showers Wednesday night while a good (50%) chance of inland showers late at night,
• AM coastal showers with showers likely (70%) in the afternoon, while inland showers Thursday, mostly cloudy with a (40%) chance of showers Thursday night.
• Mostly cloudy Friday AM, sunny in the afternoon and in the evening, mostly clear late Friday night.
• lows 52-55 cooling back to 52 Thursday night highs 64-62 warming back to 64 Thursday.
• Mostly sunny Saturday, partly cloudy at night through Monday, mostly clear Monday night,
• Then mostly sunny Tuesday.
• highs 66-63 warming to 65 Monday cooling to 63 Tuesday lows 53-55. (seasonal averages high 62 low 51)

 

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Forecast for the Cascades in Lane County:

• Clear tonight,
• Mostly sunny early, becoming partly cloudy and a bit cooler Wednesday afternoon, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers late Wednesday night,
• Mostly cloudy and bit cooler with showers becoming likely (70%) Thursday, a slight (20%) chance of showers late Thursday night,
• A slight (20%) chance of showers Friday AM, mostly sunny and a bit warmer in the afternoon, partly cloudy at night.
• free air freezing level 13,000 ft. tonight, 12,000 ft. Wednesday, snow level above 8,000 ft. Wednesday night and Thursday, 6,000 ft. Thursday night and Friday, then free air freezing level 9,000 ft. Friday night.
• lows 40-42 cooling to 37 Thursday night and Friday night highs 66-52 warming to 56 Friday.
• Partly cloudy Saturday AM, mostly sunny and a bit warmer in the afternoon, partly cloudy in the evening, clear late Saturday night,
• Mostly sunny and a bit warmer Sunday and Monday, partly cloudy Sunday night, clear Monday night,
• Then sunny Tuesday.
• free air freezing level 12,000 ft. Saturday, 13,000 ft. Saturday night through Sunday night, then 14,000 ft. Monday through Tuesday.
• highs 70-74 lows 43-47.

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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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