Here is my new weekly weather quiz question. What is a “Swell?” 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. Good luck.

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An Upper level low (“U” shape with blue arrows) just off the coast will give us some clouds and slightly cooler temperatures today, then  Upper level high pressure (“Arch” shape with blue arrows) takes over again to warm us up quickly. It looks like a cold front will move through the Pacific Northwest next Sunday bringing the temperatures back down to near normal again.

 

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 37 in the good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 19 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 27 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake. It now includes all of Agency and Upper Klamath Lakes. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.

 

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

• Partly cloudy this AM, sunny and a bit cooler this afternoon, mostly clear tonight,
• Mostly sunny and a bit warmer Wednesday, clear at night,
• Sunny and a bit warmer Thursday, then clear Thursday night.
• highs 86-93 lows 56-59.
• Sunny Friday (a bit warmer) and Saturday (a bit cooler), clear Friday night, clear in the evening and partly cloudy late Saturday night,
• Partly cloudy and a bit cooler Sunday and in the evening, mostly cloudy late at night,
• Then a mix of clouds and sun and a bit warmer Monday.
• highs 96-80 warming to 83 Monday lows 60-54. (seasonal averages high 84 low 52)

 

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Eugene-Springfield Pollen Count:

Grass………. Low (3)

Trees………. Low (0)

Last Counted: 7/25/16

Data Courtesy of Oregon Allergy Associates.

The Grass and Tree Pollen season is officially over now.

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Forecast for Roseburg:

• Cloudy this AM, sunny and a bit warmer his afternoon, clear tonight,
• Sunny and a bit warmer Wednesday and Thursday, clear both nights.
• highs 88-97 lows near 58-62.
• Partly cloudy Friday through Saturday night,
• Mostly cloudy and a bit cooler Sunday and Sunday night,
• Mostly cloudy Monday AM, then becoming sunny Monday afternoon.
• highs 93-82 lows 62-56. (seasonal averages high 86 low 57)

 

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Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Cloudy with areas of AM coastal fog and a slight (20%) chance of patchy drizzle, sunny this afternoon, clear tonight,
• Partly cloudy Wednesday AM, sunny and a bit warmer in the afternoon, clear at night,
• Mostly sunny and a bit warmer Thursday, then mostly clear at night.
• highs 65-70 lows near 58.
• Partly cloudy and a bit cooler Friday and Friday night,
• Then mostly cloudy and a bit cooler Saturday through Monday.
• highs 68-65 lows 57-55. (seasonal averages high 65 low 53)

 

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Forecast for the Cascades in Lane County:

• Mostly sunny and a bit cooler today, clear tonight,
• Then sunny and a bit warmer Wednesday and Thursday, clear both nights.
• free air freezing level 15,000 ft. today, 16,000 ft. tonight, 15,000 ft. Wednesday, then 16,000 ft. Wednesday night through Thursday night.
• highs 80-83 lows 50-56.
• Sunny and a bit warmer Friday, clear Friday night,
• Then mostly sunny Saturday (a bit warmer), (a bit cooler) Sunday and Monday, clear each night.
• free air freezing level 16,000 ft. Friday through Saturday night, then 15,000 ft. Sunday through Monday.
• highs 86-72 Sunday lows 53-45.

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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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Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

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