Here is my weekly weather quiz question for the last time. What is a “Swell?” Here is the correct answer. A Swell: Wind-generated waves that have travelled out of their generating area. Swells characteristically exhibit smoother, more regular and uniform crests and a longer period than wind waves. I’ll have a new weekly weather quiz question 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. Good luck.

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An upper level low pressure trough cools us down as it moves in but first short lived high pressure warms us for one day, Monday. By Friday another frontal system will move through Oregon.

 

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 32 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 9 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 32 in the Good category measuring Ozone.

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

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Advisories:

• A Blue-Green Algae health advisory is in effect for Odell Lake in Lane County. Water testing has confirmed the presence of blue-green algae and the toxins they produce. 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.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. 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:

• Clear tonight,
• Sunny Monday, mostly clear in the evening, mostly cloudy late Monday night,
• Cloudy Tuesday AM, mostly sunny and a bit cooler in the afternoon, mostly clear Tuesday night,
• Partly cloudy in the AM, sunny and a bit warmer Wednesday afternoon,then  mostly clear at night.
• lows 52-55 cooling to 53 Tuesday night warming to 55 Wednesday night highs 85-79 warming back to 85 Wednesday.
• Mostly sunny and a bit warmer Thursday, clear in the evening, partly cloudy late Thursday night,
• Mostly sunny but a bit cooler Friday and Saturday, mostly clear each night,
• Partly cloudy Sunday AM, then mostly sunny and a bit warmer in the afternoon.
• highs 89-83 warming to 85 Sunday lows near 55. (seasonal averages high 84 low 52)

 

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Eugene-Springfield Pollen Count:

Grass………. Moderate (5)

Trees………. Low (0)

Last Counted: 7/29/16

Data Courtesy of Oregon Allergy Associates.

The Grass and Tree Pollen season is officially over now.

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Forecast for Roseburg:

• Clear tonight,
• Mostly cloudy Monday AM, sunny in the afternoon, clear in the evening, mostly cloudy late Monday night,
• Cloudy Tuesday AM, sunny and a bit cooler in the afternoon,clear Tuesday night,
• Mostly sunny Wednesday AM, sunny and a bit warmer in the afternoon, then clear Wednesday night.
• lows 55-57 cooling back to 55 Tuesday night warming back to 57 Wednesday night highs 87-83 warming back to 87 Wednesday.
• AM clouds, sunny Thursday afternoon, mostly clear at night,
• Mostly sunny and a bit cooler Friday and Saturday, mostly clear Friday night, then partly cloudy Saturday night and Sunday.
• highs 87-84 lows 59-57. (seasonal averages high 86 low 57)

 

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

• Clear this evening and mostly cloudy late tonight at the shore while clear inland tonight,
• Mostly cloudy Monday AM, sunny in the afternoon, clear in the evening, mostly cloudy late Monday night,
• Cloudy Tuesday AM, partly cloudy in the afternoon, mostly clear Tuesday night,
• Mostly cloudy Wednesday AM, partly cloudy in the afternoon, then mostly clear Wednesday night.
• lows 53-56 cooling to 54 Tuesday night and Wednesday night highs near 65.
• AM clouds, sunny Thursday afternoon, clear in the evening, partly cloudy late Thursday night through Friday evening, mostly cloudy late Friday night,
• Then partly cloudy Saturday through Sunday.
• highs near 66 lows near 56. (seasonal averages high 65 low 53)

 

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Forecast for the Cascades in Lane County:

• Clear tonight,
• Sunny and a bit warmer Monday, clear in the evening, partly cloudy late Monday night,
• A mix of clouds and sun in the AM, mostly sunny and a bit cooler Tuesday afternoon, clear Tuesday night,
• Sunny and a bit warmer Wednesday, then clear Wednesday night.
• free air freezing level 15,000 ft. tonight through Monday night, 14,000 ft. Tuesday through Wednesday, then 15,000 ft. Wednesday night.
• lows 46-42 highs 77-67 warming back to 77 Wednesday.
• Sunny and a bit warmer Thursday, clear at night,
• Then mostly sunny and a bit cooler Friday, Saturday and Sunday, mostly clear each night.
• free air freezing level 15,000 ft. Thursday and Thursday night, then 15,000 ft. Friday through Sunday.
• highs 80-75 lows 49-45.

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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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