Here is my weekly weather quiz question. What is a “Symmetric Double Eye?”  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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Weak high pressure (“Arch” shape in blue arrows) takes over to raise the temperatures again Wednesday, but another upper level low moves in by the end of the week.  By Friday a weak cold front will move through Oregon cooling us again just in time for the weekend.

 

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 33 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 31 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:

• Mostly sunny and a bit warmer today, mostly clear tonight,
• Mostly sunny and a bit warmer Thursday, clear in the evening then partly cloudy late Thursday night,
• Clouds and sun in the AM, sunny but a bit cooler Friday afternoon, clear in the evening, then partly cloudy late Friday night.
• highs 85-90 cooling back to 83 Friday lows 52-54.
• Partly cloudy Saturday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers late Saturday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Sunday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late Sunday night,
• A mix of clouds and sun with a slight (20%) chance of showers Monday, partly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late Monday night,
• Then a mix of clouds and sun and a bit warmer Tuesday.
• highs 80-78 warming to 83 Tuesday lows 55-52. (seasonal averages high 84 low 52)

 

 

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Eugene-Springfield Pollen Count:

Grass………. Low (2)

Trees………. Low (0)

Last Counted: 7/30/16

Data Courtesy of Oregon Allergy Associates.

The Grass and Tree Pollen season is officially over now.

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Forecast for Roseburg:

• Sunny and a bit warmer this afternoon, clear tonight,
• Partly cloudy in the AM, mostly sunny and a bit warmer Thursday afternoon, mostly clear at night,
• AM clouds, mostly sunny and a bit cooler Friday, then partly cloudy Friday night,
• highs 88-92 cooling to 83 Friday lows 57-59 cooling to 56 Friday night.
• Partly cloudy and a bit cooler Saturday through Sunday night,
• Mostly cloudy and a bit warmer Monday through Tuesday AM, then sunny and a bit warmer Tuesday afternoon.
• highs 82-80 warming to 83 Tuesday lows near 58. (seasonal averages high 86 low 57)

 

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

• Sunny this afternoon and breezy (Wind: NE 10-15 mph increasing and shifting N 15-25 mph late this afternoon), clear in the evening at the shore and mostly cloudy late tonight while clear inland tonight and breezy (at the shore Wind: N 15-25 mph falling to N 10-15 mph late tonight),
• AM clouds, partly cloudy Thursday afternoon, clear in the evening, mostly cloudy late Thursday night and Friday AM, partly cloudy in the afternoon, then mostly cloudy Friday night.
• highs 67- 65 lows near 55.
• Mostly cloudy Saturday, partly cloudy at night and Sunday, mostly cloudy Sunday night through Tuesday AM, then sunny Tuesday afternoon.
• highs 65-67 lows near 56. (seasonal averages high 65 low 53)

 

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Forecast for the Cascades in Lane County:

• Sunny and a bit warmer today, clear tonight,
• Mostly sunny and a bit warmer with a slight (20%) chance of showers and thunderstorms Thursday afternoon, mostly clear with a slight (20%) chance of evening showers and thunderstorms, a slight (20%) chance of showers late Thursday night,
• Then just partly cloudy Friday and Friday night.
• free air freezing level 14,000 ft. today, 15,000 ft. tonight, snow level above 8,000 ft. Thursday and Thursday night, free air freezing level 14,000 ft. Friday and Friday night.
• highs 76-82 cooling back to 74 Friday lows 45-50 cooling back to 45 Friday night.
• Mostly sunny in the AM, partly cloudy through Sunday evening, mostly cloudy late Sunday night
• Partly cloudy Monday AM, mostly sunny and a bit warmer in the afternoon, partly cloudy Monday night,
• A mix of clouds and sun in the AM, then mostly sunny and a bit warmer Tuesday afternoon.
• free air freezing level 13,000 ft. Saturday and Saturday night, 12,000 ft. Sunday through Monday night, then 13,000 ft. Tuesday.
• highs 72-70 warming to 70 Tuesday lows near 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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