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Check out my latest Eugene Daily News Weather Or Not Column A Big Badda-Boom!

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And don’t forget my latest feature story in the continuing series on service club organizations called Who Are The Soroptimists And What Are They Doing?

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Here is my weekly weather quiz question. What is “radiational cooling?” 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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Now an upper level high pressure ridge (Shaded “Arch” shape with blue arrows) is moving eastward away from us allowing onshore airflow which cooled us rapidly back to near normal. Upper level low pressure (Shaded “U” shape on previous graphic) will bring more onshore airflow continuing the cooling trend. A cold front moved through today also aiding the cooling our high temperatures. It looks like the 4th of July will be a nice dry day with temperatures just about normal. With luck it should hold for the holiday weekend too, but we’ll have to wait and see.

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Advisories: None at this time.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 24 in the Good category measuring Ozone at Delight Valley School, Saginaw. Data courtesy of Lane Regional Air Protection Agency (LRAPA)

Oakridge: The Air Quality Index is 24 in the Good category measuring Particulate Matter at Willamette Activity Center, Oakridge. Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Eugene-Springfield Pollen Count:

Grass……….Very High (203)

Trees……….Moderate (22)

Last Counted: 7/1/14

Data Courtesy of Oregon Allergy Associates.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly clear this evening, mostly cloudy late tonight,
• Mostly cloudy Thursday AM, mostly sunny in the afternoon, mostly clear at night,
• Partly cloudy Friday (Independence Day) and Friday night,
• A mix of clouds and sun Saturday, then partly cloudy Saturday night.
• lows 52-48 warming to 53 Saturday night highs 76-80.
•  Partly cloudy Sunday through Monday AM,  mostly sunny Monday afternoon, partly cloudy at night,
• Partly cloudy Tuesday AM, mostly sunny in the afternoon, mostly clear at night
• Then mostly sunny Wednesday.
• highs 80-85 lows 56-53. (seasonal averages high 79 low 50)

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Forecast for the Umpqua Basin including Roseburg:

• Mostly clear this evening, partly cloudy late tonight,
• Mostly cloudy Thursday AM, sunny in the afternoon, mostly clear Thursday night,
• Sunny Friday AM, partly cloudy in the afternoon (Independence Day) and Friday night,
• Partly cloudy Saturday and Saturday night.
• lows 59-55 warming back to 59 Saturday night highs 82-89.
•  Partly cloudy Sunday and at night,
• Mostly sunny Monday, Tuesday, and Wednesday, mostly clear each night.
• highs near 90 lows 62-56. (seasonal averages high 81 low 55)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Partly cloudy this evening, mostly cloudy tonight with a slight (20%) chance of drizzle late tonight and Thursday AM, mostly sunny in the afternoon, mostly cloudy in the evening, partly cloudy at night.
• Mostly cloudy Friday AM, partly cloudy in the afternoon (Independence Day) and Friday night,
• Mostly cloudy Saturday and Saturday night.
• lows 57-54 warming back to 57 Saturday night highs 63-67.
• Mostly cloudy Sunday AM, partly cloudy in the afternoon, then just mostly cloudy Sunday night through Wednesday.
• highs 69-64 lows 59-55. (seasonal averages high 64 low 52).

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Forecast for the Cascades in Lane County:

• Partly cloudy with a slight (20%) chance of showers and thunderstorms this evening, just partly cloudy and cooler tonight,
• Partly cloudy in the AM, mostly sunny Thursday afternoon, mostly clear at night,
• Mostly sunny Friday (Independence Day), then partly cloudy Friday night through Saturday night.
• snow level above 8,000 ft. tonight, free air freezing level 14,000 ft. Thursday, then 15,000 ft. Thursday night through Saturday night.
• lows 45-50 highs 72-75 cooling back to 72 Saturday night.
• Partly cloudy Sunday through Monday AM, mostly sunny in the afternoon, mostly clear Monday night,
• Then mostly sunny Tuesday and Wednesday, mostly clear Tuesday night.
• free air freezing level 15,000 ft. Sunday through Monday, 16,000 ft. Monday night through Wednesday.
• highs 73-78 lows 53-50.

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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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