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Check out my latest Eugene Daily News Weather Or Not Column We’re Having A Heatwave. What To Do?

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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 a “Derecho?” (Hint: One has been in the news lately.) Here is the correct answer. A Derecho (Pronounced day-RAY-cho), a widespread and usually fast-moving windstorm associated with convection. Derechos include any family of downburst clusters produced by an extratropical MCS, and can produce damaging straight-line winds over areas hundreds of miles long and more than 100 miles across.I’ll have a new weekly weather quiz 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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A high pressure ridge (“Arch” shape in blue arrows offshore) is slowly weakening and an upper level low will slide over it toward the weekend. A frontal system will push in tonight bringing with it the slight chance of showers beginning Sunday.

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Advisories: None at this time.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 22 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 13 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 (34)

Trees……….Low (12)

Last Counted: 7/11/14

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,
• Cloudy with a slight (20%) chance of light rain or drizzle Sunday AM, a mix of clouds and sun with a slight (20%) chance of showers Sunday afternoon, just partly cloudy at night,
• AM clouds, partly cloudy Monday afternoon and evening, mostly cloudy with a slight (20%) chance of showers late at night,
• lows 60-53 highs 82-76.
• Mostly cloudy Tuesday with a (30%) chance of showers, a (40%) chance of showers Tuesday night,
• Mostly cloudy with a (30%) chance of showers Wednesday AM, a slight (20%) chance of showers in the afternoon and evening, partly cloudy late at night,
• Partly cloudy Thursday and Thursday night,
• Mostly sunny Friday AM, partly cloudy in the afternoon and night,
• Then mostly sunny Saturday.
• highs 75-87 lows 48-55. (seasonal averages high 83 low 52)

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Forecast for the Umpqua Basin including Roseburg:

• Clear tonight,
• Sunny Sunday AM, partly cloudy in the afternoon and Sunday night,
• Mostly cloudy Monday AM, partly cloudy in the afternoon, mostly cloudy with a slight (20%) chance showers late Monday night,
• Mostly cloudy with a slight (20%) chance of showers Tuesday and Tuesday night.
• lows 62-58 highs 86-82.
• Mostly cloudy with a slight (20%) chance of showers Wednesday, partly cloudy with a slight (20%) chance of showers in the evening, partly cloudy at night,
• Partly cloudy Thursday AM, sunny in the afternoon, clear at night,
• Then sunny Friday and Saturday, clear Friday night.
• highs 79-92 lows 55-58. (seasonal averages high 85 low 57)

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

• Mostly clear this evening, mostly cloudy with patchy coastal fog and a slight (20%) chance of patchy drizzle late tonight while clear inland with patchy fog late at night,
• Mostly cloudy with patchy AM fog and a slight (20%) chance of coastal drizzle Sunday AM, partly cloudy in the afternoon and evening, mostly cloudy Sunday night,
• Mostly cloudy Monday AM, partly cloudy in the afternoon and evening, mostly cloudy with a slight (20%) chance of showers late Monday night,
• Mostly cloudy with a slight (20%) chance of showers Tuesday, a (30%) chance of showers late at night.
• lows 58-55 highs near 63.
• Mostly cloudy with a (30%) chance of showers Wednesday, partly cloudy with a slight (20%) chance of showers Wednesday evening, partly cloudy at night,
• Partly cloudy in the AM, sunny Thursday afternoon, clear at night,
• Sunny Friday and Saturday, clear Friday night.
• highs 62-67 lows near 56. (seasonal averages high 65 low 53).

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Forecast for the Cascades in Lane County:

• Clear this evening,  partly cloudy late tonight,
• Mostly cloudy with a slight (20%) chance of light rain or drizzle Sunday AM, partly cloudy with a slight (20%) chance of showers in the afternoon, partly cloudy Sunday night,
• A mix of clouds and sun with a slight (20%) chance of showers  and thunderstorms Monday afternoon, partly cloudy with a slight (20%) chance of showers and thunderstorms in the evening, mostly cloudy with a (30%) chance of showers and a slight (20%) chance of thunderstorms late Monday night,
• A mix of clouds and sun with a (30%) chance of showers and a slight (20%) chance of thunderstorms Tuesday, partly cloudy with a (30%) chance of showers and a slight (20%) chance thunderstorms in the evening, mostly cloudy with a (30%) chance of showers late Tuesday night.
• free air freezing level 15,000 ft. tonight, 14,000 ft. Sunday  night, snow level above 8,000 ft. Monday  through Tuesday night.
• highs 75-68 lows 50-52 cooling to 48 Tuesday night.
• A mix of clouds and sun with a (30%) chance of showers Wednesday AM, a slight (20%) chance of showers in the afternoon, partly cloudy with a slight (20%) chance of evening showers, and partly cloudy at night,
• Then mostly sunny Thursday, Friday, and Saturday, clear each night.
• snow level above 8,000 ft. Wednesday and Wednesday night, then free air freezing level 13,000 ft. Thursday, then 15,000 ft. Friday through Saturday.
• highs 62-77 lows 40-50.

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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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