Here is my new weekly weather quiz question. What are “Stoplogs?” 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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A frontal system will increase the precipitation chances for your Tuesday.  Upper level Low Pressure (Shaded “U” shape with blue arrows) is moving away from us and High Pressure (“Arch” shape in blue arrows) will take over for a short while. An upper level low will move up to the coast by the end of the week returning the chance of showers.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 21 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 20 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 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.
• A Blue-Green Algae health advisory has been issued for the Metolius Arm of Lake Billy Chinook from Perry South Campground to and including the area around Three Rivers Marina, located about 12 miles Southwest of Madras in Jefferson County. It now includes the Crooked River Arms. 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 with a slight (20%) chance of AM showers, a good (50%) chance of showers this afternoon (under 0.10 in. of rain possible), just partly cloudy tonight and Wednesday AM, mostly sunny and a bit warmer in the afternoon and Thursday, clear Wednesday night, then mostly clear Thursday night.
• highs 74-85 lows near 52.
• Partly cloudy and a bit cooler Friday, partly cloudy with a slight (20%) chance of showers late Friday night and Saturday AM,  just partly cloudy and a bit cooler in the afternoon through Sunday night,
• Then a mix of clouds and sun Monday.
• highs 82-76 lows near 52. (seasonal averages high 82 low 51)

 

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Eugene-Springfield Pollen Count:

Grass………. Low (0)

Trees………. Low (2)

Last Counted: 7/11/16

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly cloudy this AM, partly cloudy this afternoon and evening, mostly clear late tonight,
• Sunny and a bit warmer Wednesday and Thursday, then clear both nights.
• highs 76-87 lows near 54.
• Sunny Friday, partly cloudy and a bit cooler Friday night through Saturday night,
• Then mostly cloudy Sunday through Monday.
• highs 86-78 lows near 55. (seasonal averages high 84 low 56)

 

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

• Mostly cloudy with a slight (20%) chance of showers today, partly cloudy this evening, mostly clear tonight,
• Partly cloudy Wednesday AM, sunny in the afternoon, then mostly clear at night,
• Sunny Thursday, then clear Thursday night.
• highs 64-66 cooling back to 64 Thursday lows near 54.
• Sunny Friday, partly cloudy at night and Saturday, then mostly cloudy Saturday night through Monday.
• highs near 65 lows 53-55 cooling back to 53 Sunday night. (seasonal averages high 64 low 53)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a (30%) chance of AM showers, a slight (20%) chance of showers this afternoon, just partly cloudy tonight,
• Mostly sunny and warmer Wednesday, clear Wednesday night,
• Sunny and a bit warmer Thursday, clear in the evening, then partly cloudy late at night.
• snow level above 8,000 ft. today, free air freezing level 12,000 ft. rising to 13,000 ft. tonight, 13,000 ft. rising to 14,000 ft. Wednesday afternoon, 14,000 ft. Wednesday night and Thursday, then 14,000 ft. falling to 13,000 ft. Thursday night.
• highs 60-75 lows 42-44 cooling back to 42 Thursday night.
• Mostly sunny Friday AM, partly cloudy and a bit cooler Friday afternoon through Saturday AM, mostly sunny in the afternoon, partly cloudy Saturday night through Sunday night,
  Then partly cloudy with a slight (20%) chance of showers Monday afternoon.
• free air freezing level 13,000 ft. Friday, 13,000 ft. falling to 12,000 ft. late Friday night, 12,000 ft. Saturday, 12,000 ft. falling to 11,000 ft. Saturday night, 11,000 ft. Sunday through Monday AM, then snow level above 8,000 ft. Monday afternoon.
• highs 68-65 lows 40-42.

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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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