______________

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

_____

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?

________________

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.

________________

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.

________________

Advisories: None at this time.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 23 in the Good category measuring Particulate at Springfield City Hall. Data courtesy of Lane Regional Air Protection Agency (LRAPA)

Oakridge: The Air Quality Index is 20 in the Good category measuring Particulate Matter at Willamette Activity Center, Oakridge. Data courtesy of Lane Regional Air Protection Agency (LRAPA)
________________

Eugene-Springfield Pollen Count:

Grass……….High (47)

Trees……….Low (19)

Last Counted: 7/3/14

Data Courtesy of Oregon Allergy Associates.

________________

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

• Mostly sunny today, Monday, and Tuesday, mostly clear each night.
• highs 90-87 lows 57-54.
• Mostly sunny Wednesday, Thursday, Friday, and Saturday, mostly clear each night.
• highs 83-80 warming to 86 Saturday lows near 53. (seasonal averages high 80 low 51)

________________

Forecast for the Umpqua Basin including Roseburg:

• Sunny today, clear this evening, partly cloudy late tonight,
• Mostly cloudy Monday AM, sunny in the afternoon, mostly clear in the evening, partly cloudy late at night,
• Mostly cloudy in the AM, sunny Tuesday afternoon, mostly clear Tuesday night.
• highs 92-89 lows 63-60.
• Mostly sunny Wednesday through Saturday, mostly clear each night.
• highs 85-93 lows near 58. (seasonal averages high 82 low 55)

_________________

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

• Sunny today, partly cloudy in the evening, mostly cloudy late tonight,
• Mostly cloudy in the AM, then partly cloudy Monday afternoon, mostly clear in the evening, mostly cloudy late at night,
• Mostly cloudy Tuesday AM, then partly cloudy Tuesday afternoon and at night.
• highs 68-65 lows near 58.
• Partly cloudy Wednesday through Friday night,
• Mostly cloudy Saturday AM, then sunny in the afternoon.
• highs 65-70 lows near 56. (seasonal averages high 64 low 52).

________________

Forecast for the Cascades in Lane County:

• Mostly sunny today, Monday, and Tuesday, mostly clear tonight and Monday night, partly cloudy Tuesday evening, then clear late at night.
• free air freezing level 15,000 ft. today, 16,000 ft. tonight through Tuesday night.
• highs 78-80 cooling back to 78 Tuesday lows 50-52 cooling to 46 Tuesday night.
• Mostly sunny Wednesday through Saturday, again with mostly clear nights.
• free air freezing level 16,000 ft. Wednesday through Thursday, 15,000 ft. Thursday night, through Friday night, then 16,000 ft. Saturday.
• highs 75-72 warming to 76 Saturday lows 45-50.

________________

**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.

________________