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 and Tuesday, 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 to near normal again.

 

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 25 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 20 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:

• Mostly cloudy early this morning, sunny this afternoon, clear in the evening, partly cloudy late tonight,
• A mix of clouds and sun early Tuesday AM, sunny in the afternoon, clear at night,
• Mostly sunny and a bit warmer Wednesday, then clear at night.
• highs 87-85 warning to 89 Wednesday lows 58-54 warming to 57 Wednesday night.
• Sunny Thursday, Friday and Saturday, clear Thursday night and Friday night, clear in the evening and mostly cloudy late Saturday night,
• A mix of clouds and sun early Sunday AM, then sunny and a bit cooler in the afternoon.
• highs 93-96 cooling to 82 Sunday 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:

• Mostly cloudy this AM, sun breaks this afternoon, clear tonight,
• Mostly cloudy in the AM, sunny in the afternoon and mostly clear Tuesday through Wednesday night.
• highs 86-93 lows near 60.
• Partly cloudy in the AM, mostly sunny and a bit warmer Thursday afternoon,
• Mostly sunny Friday and Saturday, mostly clear at night,
• Partly cloudy Sunday AM, then sunny and cooler Sunday afternoon.
• highs 94-96 cooling to 82 Sunday lows 62-64 cooling back to 62 Saturday night. (seasonal averages high 86 low 57)

 

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

• Mostly cloudy this AM fog and with a slight (20%) chance of coastal drizzle, just mostly cloudy this afternoon, clear this evening, partly cloudy tonight with patchy fog and a slight (20%) chance of patchy coastal drizzle late,
• Mostly cloudy Tuesday with a slight (20%) chance of patchy AM coastal drizzle, sunny Tuesday afternoon, clear in the evening, mostly cloudy late at night,
• Mostly cloudy Wednesday AM, sunny in the afternoon, clear in the evening, then partly cloudy late Wednesday night.
• highs 65-68 cooling to 66 Wednesday lows near 58.
• Partly cloudy Thursday through Sunday.
• highs 68-65 lows 59-62. (seasonal averages high 65 low 53)

 

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Forecast for the Cascades in Lane County:

• Partly cloudy early this morning, sunny and a bit cooler this afternoon, clear tonight,
• Mostly sunny and a bit cooler Tuesday, clear at night,
• Sunny and a bit warmer Wednesday, then clear at night.
• free air freezing level 14,000 ft. today, 15,000 ft. Tuesday through Wednesday, then 16,000 ft. Wednesday night.
• highs 82-79 warming back to 82 Wednesday lows 50-46 warming to 50 Wednesday night.
• Sunny and a bit warmer Thursday and Friday, clear both nights,
• Sunny Saturday AM, partly cloudy and a bit cooler in the afternoon, mostly clear Saturday night,
• Then mostly sunny and a bit cooler Sunday.
• free air freezing level 16,000 ft. Thursday through Saturday night, then 15,000 ft. Sunday.
• highs 83-86 cooling to 72 Sunday lows 52-55.

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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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