Here is my new weekly weather quiz question. What is a “Stilling Basin?”  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 moved through the Pacific Northwest, but it washed out bringing only a few more clouds with almost no noticeable difference in our weather. Looks like some typical Oregon Summertime sunny and dry weather today for Independence Day. Upper level Low Pressure (Shaded “U” shape with blue arrows) gives us the impetus for a change in our weather pattern. A frontal system is shown approaching the coast on Friday. There’s the cause of the rain chances. The 2016 Olympic Team Trials that run through July 10th at Hayward Field will encounter at least a chance of showers from Thursday through the rest of the trials.

Note: Please consider your neighbors when discharging fireworks, which by statute in Eugene should only be used on Monday the 4th. Also, be very careful to put out all spent fireworks to prevent accidental fires. If possible, keep pets indoors to lessen the jarring boom of  mainly the illegal fireworks. Proudly fly your American Flag.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 18 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

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

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Advisories:

• A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR GUSTY WINDS AND LOW HUMIDITY FOR THE EAST SLOPES OF THE NORTHERN OREGON CASCADES AND THE LOWER COLUMBIA BASIN OF OREGON.
• A Blue-Green Algae health advisory is in effect issued for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake. 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.   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 today (Independence Day), partly cloudy tonight through Wednesday AM, sunny in the afternoon, then partly cloudy Wednesday night.
• highs 80-78 warming back to 80 Wednesday lows 50-52.
• Partly cloudy Thursday AM, a mix of clouds and sun with a slight (20%) chance of showers in the afternoon, mostly cloudy with a slight  showers in the evening, a good (50%) chance of rain late Thursday night and Friday AM, a good (50%) chance of rain and a bit cooler Friday afternoon, cloudy with a good (50%) chance of showers late Friday night and Saturday, then mostly cloudy with a (40%) chance of showers and a bit cooler Saturday night and Sunday.
• highs 80-68 lows 55-50. (seasonal averages high 79 low 50)

 

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Eugene-Springfield Pollen Count:

Grass………. High (103)

Trees………. Low (0)

Last Counted: 7/1/16

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Sunny today (Independence Day), mostly clear this evening, partly cloudy late tonight,
• Mostly cloudy Tuesday AM, sunny and a bit cooler in the afternoon, then partly cloudy  Tuesday night and Wednesday AM, sunny in the afternoon, mostly clear in the evening, then partly cloudy Wednesday night.
• highs 84-80 warming to 82 Wednesday lows near 53.
• Partly cloudy in the AM, mostly cloudy with a slight (20%) chance of showers Thursday afternoon, cloudy with a (30%) chance of rain and a bit cooler Thursday night through Friday night,
• Cloudy with a (30%) chance of showers and a bit cooler Saturday, then mostly cloudy with a slight (20%) chance of showers Saturday night and Sunday.
• highs 80-72 lows 57-52. (seasonal averages high 81 low 55)

 

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

• Sunny today (Independence Day), partly cloudy this evening, mostly cloudy late tonight and Tuesday AM, sunny in the afternoon, partly cloudy Tuesday night and Wednesday AM, sunny in the afternoon, mostly clear in the evening, then partly cloudy at night.
• highs near 65 lows near 52.
• Partly cloudy Thursday AM, mostly cloudy with a slight (20%) chance of rain in the afternoon and evening, mostly cloudy with a (30%) chance of rain Thursday night,
• Mostly cloudy with a (40%) chance of rain Friday and Friday night,
• Mostly cloudy with a (30%) chance of showers Saturday, then a slight (20%) chance of showers Saturday night and Sunday.
• highs near 65 lows 55-52. (seasonal averages high 64 low 52)

 

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Forecast for the Cascades in Lane County:

• Mostly sunny today (Independence Day), partly cloudy tonight and Tuesday AM, mostly sunny and a bit cooler Tuesday afternoon, partly cloudy at night,
• Mostly sunny and a bit warmer Wednesday, then mostly clear at night.
• free air freezing level 13,000 ft. today and tonight, 12,000 ft. Tuesday, 11,000 ft. Tuesday night and Wednesday, then 13,000 ft. Wednesday night.
• highs 68-64 warming back to 68 Wednesday lows 42-40.
• Mostly sunny Thursday AM, partly cloudy and a bit warmer in the afternoon and evening, mostly cloudy with a (40%) chance of rain late Thursday night,
• Mostly cloudy with a good (50%) chance of rain Friday AM, a bit cooler with a good (50% chance of showers in the afternoon, showers likely (70%) Friday night,
• Mostly cloudy and a bit cooler with a good (50%) chance of showers Saturday then mostly cloudy with a (40%) chance of showers Saturday night and Sunday.
• free air freezing level 13,000 ft. Thursday, snow level above 8,000 ft. Thursday night through Friday night, 7,000 ft. Saturday and Saturday night, then 6,500 ft. Sunday.
• highs 69-52 lows 45-38.

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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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