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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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No winner this week. Here is my weekly weather quiz question for the last time. What is “radiational cooling?” Here is the correct answer. Radiational Cooling is the cooling of the Earth’s surface. At night, the Earth suffers a net heat loss to space due to terrestrial cooling. This is more pronounced when you have a clear sky. I’ll have another weekly weather question for you starting Monday. 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 high pressure ridge (Shaded “Arch” shape with blue arrows) has been keeping us in sunshine and warm temperatures. An upper level trough of low pressure  (Shaded “U” shape with blue arrows) will bring more onshore flow and cool us down a bit as we approach mid-week. A weak cold front will move through and at most only drop temperatures slightly Tuesday, Wednesday, and Thursday.

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Advisories:

• A HEAT ADVISORY IS IN EFFECT FROM NOON MONDAY UNTIL 8 PM TUESDAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 34 in the Good category measuring Ozone, Delight Valley School, Saginaw. Data courtesy of Lane Regional Air Protection Agency (LRAPA)

Oakridge: The Air Quality Index is 19 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……….High (47)

Trees……….Low (19)

Last Counted: 7/3/14

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 tonight,
• Partly cloudy Monday AM, sunny in the afternoon, clear in the evening, partly cloudy late Monday night,
• Mostly sunny Tuesday and Wednesday, mostly clear at night.
• lows 54-58 cooling to 52 Wednesday night highs 92-87.
• Mostly sunny Thursday, Friday, Saturday, and Sunday with mostly clear nights.
• highs 84-90 lows near 55. (seasonal averages high 80 low 51)

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Forecast for the Umpqua Basin including Roseburg:

• Mostly clear tonight,
• Mostly cloudy Monday AM, sunny in the afternoon, mostly clear in the evening, partly cloudy late at night,
• Mostly cloudy Tuesday AM, sunny in the afternoon,  mostly clear in the evening, partly cloudy late Tuesday night,
• Mostly sunny Wednesday, then mostly clear at night.
• lows 60-63 cooling to 54 Wednesday night highs 93-85.
• Mostly sunny Thursday, Friday, and Saturday, mostly clear each night,
• Then sunny Sunday.
• highs 87-92  lows 55-58. (seasonal averages high 82 low 55)

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

• Partly cloudy at the shore this evening and mostly cloudy late tonight while mostly clear inland this evening and partly cloudy late tonight,
• Mostly cloudy in the AM, partly cloudy Monday afternoon, mostly clear in the evening, mostly cloudy late at night,
• Mostly cloudy Tuesday AM, partly cloudy in the afternoon and evening, mostly cloudy late at night,
• Then partly cloudy Wednesday and Wednesday night.
• lows 60-55 highs near 65.
• Partly cloudy Thursday through Friday night,
• Mostly cloudy Saturday AM, sunny in the afternoon, mostly clear Saturday night,
• Then mostly sunny Sunday.
• highs 65-70 lows 55-60. (seasonal averages high 64 low 52).

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Forecast for the Cascades in Lane County:

• Clear tonight,
• Mostly sunny Monday, partly cloudy at night,
• Mostly sunny Tuesday AM, partly cloudy with a slight (20%) chance of showers and thunderstorms in the afternoon and evening, just partly cloudy late at night,
• Mostly sunny Wednesday, then mostly clear at night.
• free air freezing level 16,000 ft. tonight through Monday night, snow level above 8,000 ft. Tuesday and Tuesday night, then free air freezing level 16,000 ft. Wednesday and Wednesday night.
• lows 50-55 cooling to near 56 Wednesday night highs 82-76.
• Sunny Thursday, clear at night,
• Sunny Friday AM, partly cloudy with a slight (20%) chance of showers in the afternoon and evening, clear late at night,
• Sunny Saturday AM, partly cloudy with a slight (20%) chance of afternoon and evening showers, mostly cloudy at night,
• Then mostly sunny Sunday.
• free air freezing level 16,000 ft. Thursday, 15,000 ft. Thursday night, snow level above 8,000 ft. Friday night through Saturday night, then free air freezing level 16,000 ft. Sunday.
• highs 76-79 lows 49-52.

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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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