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Check out my latest Eugene Daily News Weather Or Not Column A Perfect Day In Every Way.

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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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Sorry, no winner this week. Here is my weekly weather quiz question for the last time. What is a “macroburst?”  Here is the correct answer. A Macroburst is a convective downdraft with an affected outflow area of at least 2½ miles wide and peak winds lasting between 5 and 20 minutes. Intense macrobursts may cause tornado-force damage of up to F3 intensity.  I’ll have another 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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An upper level trough of low pressure sitting off the coast of California (“U” shape with blue arrows) is will move to the north and east  increasing the chances for another round of mountain showers and thunderstorms. Warming up today for the Oregon Country Fair with a slight chance of showers and a thunderstorm and a bit cooler Sunday. Keep your eyes on the full “buck” moon as the moon will appear to be much larger than normal when it rises above the horizon.

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Advisories:

• A HEAT ADVISORY IS IN EFFECT UNTIL MIDNIGHT TONIGHT FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY, THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA GORGE, THE NORTH OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, THE NORTHERN CASCADES, THE CASCADES IN LANE COUNTY, AND THE UPPER HOOD RIVER VALLEY.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 36 in the Good category measuring Particulate Matter at Springfield City Hall. 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……….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:

• Partly cloudy with a slight (20%) chance of thunderstorms late tonight,
• A mix of clouds and sun with a slight (20%) chance of showers and thunderstorms Sunday AM, a (30%) chance of showers and thunderstorms in the afternoon (under 0.10 in. of rain possible, more in storms), partly cloudy with a (30%) chance of  showers and thunderstorms in the evening (under 0.10 in. of rain possible, more in storms, gusty winds possible), mostly cloudy late Sunday night,
• Mostly cloudy in the AM, mostly sunny and warmer in the afternoon, mostly clear Monday night,
• Sunny Tuesday, then mostly clear at night.
• lows 58-62 highs 83-94.
• Then mostly sunny Wednesday, Thursday, Friday, and Saturday mostly clear each night.
• highs 92-86 warming to near 90 Saturday lows 58-56. (seasonal averages high 82 low 51)

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Forecast for the Umpqua Basin including Roseburg:

• Partly cloudy tonight,
• Mostly cloudy Sunday with a slight (20%) chance of thunderstorms through the evening, just mostly cloudy late at night,
• Mostly cloudy in the AM, sunny Monday afternoon, mostly clear at night,
• Mostly sunny Tuesday, then mostly clear at night.
• lows 62-66 highs 82-102.
• Mostly sunny Wednesday, Thursday, Friday, and Saturday, mostly clear each night,
• highs 96-88 warming to 92 Saturday lows near 58. (seasonal averages high 84 low 56)

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

• Partly cloudy this evening, mostly cloudy tonight with patchy coastal fog late,
• Cloudy with patchy AM coastal fog, cloudy with a slight (20%) chance of thunderstorms in the afternoon, just cloudy night,
• Cloudy Monday AM, partly cloudy in the afternoon, while mostly clear inland Monday night,
• Then mostly sunny Tuesday, mostly clear at night.
• lows near 57 highs 62-70.
•  Mostly sunny Wednesday, Thursday, and Friday, mostly clear each night,
• Then partly cloudy Saturday AM, then sunny and warmer Saturday afternoon.
• highs 63-65 lows 56-58. (seasonal averages high 64 low 53).

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Forecast for the Cascades in Lane County:

• Partly with a sight (20%) chance of showers and thunderstorms this evening, a slight (20%) chance of thunderstorms late tonight,
• A mix of clouds and sun Sunday with a slight (20%) chance of AM thunderstorms, a (40%) chance afternoon and evening showers and thunderstorms (0.10 in. of rain possible, more in storms, gusty winds possible), a good (50%) chance of showers and a slight (20%) chance of thunderstorms late Sunday night (gusty winds and small hail possible in storms),
• Mostly cloudy in the AM, partly cloudy and warmer Monday afternoon and evening, clear at night,
• Sunny Tuesday, then mostly clear at night.
• snow level above 12,000 ft. tonight through Sunday night, free air freezing level 16,000 ft Monday through Tuesday night.
• lows 55-52 warming to 58 Tuesday night highs 76-85.
• Mostly sunny Wednesday, Thursday, Friday and Saturday, mostly clear each night,
• free air freezing level 16,000 ft. Wednesday through Saturday.
• highs 82-75 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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