Here is my weekly weather quiz question for the last time. What is a “Barber Pole?” (In Meteorology) Here is the correct answer. A Barber Pole [Slang], is a thunderstorm updraft with a visual appearance including cloud striations that are curved in a manner similar to the stripes of a barber pole. The structure typically is most pronounced on the leading edge of the updraft, while drier air from the rear flank downdraft often erodes the clouds on the trailing side of the updraft. I will have  new weekly weather quiz question for you starting Monday. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

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An Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) is moving to the east and n Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) to our north are going to keep us in relatively normal temperatures for this summer season with minor fluctuation up and down.  The graphics for days 3-7 show no major frontal systems attempting to move into the Pacific Northwest Wednesday through Sunday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 31 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 28 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

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Advisories:

•  A Health Advisory continues for Lake Billy Chinook, located 12 miles west of Madras in Jefferson County. Water monitoring has has confirmed the presence of Blue-green Algae and the toxins they produce. These toxin concentrations ca be harmful to humans and animals. 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. Drinking water directly from these areas of Lake Billy Chinook at this time is especially dangerous. Oregon public health officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Clear tonight,
• Partly cloudy in the AM, mostly sunny and a bit cooler Sunday afternoon, clear at night,
• AM clouds, sunny and a bit cooler Monday afternoon, clear Monday night,
• AM clouds, sunny and a bit warmer Tuesday, clear at night,
• lows near 50 highs 78-82.
• Sunny Wednesday, clear at night,
• Mostly sunny and a bit cooler Thursday, mostly clear in the evening, mostly cloudy Thursday night and Friday AM, partly cloudy and a bit warmer in the afternoon and evening, clear late Friday night,
• Then mostly sunny Saturday.
• highs near 82 lows 54-52. (seasonal averages high 83 low 52)

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Eugene-Springfield Pollen Count

Grass………. High (28)

Trees………. Low (3)

Last Counted: 7/7/17

Data Courtesy of Oregon Allergy Associates.

Note: It would seem the pollen season has ended. Hooray!

 

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Forecast for Roseburg:

• Mostly clear tonight,
• AM clouds, sunny and a bit cooler Sunday afternoon, clear at night,
• Sunny Monday, mostly clear Monday night,
• Sunny and a bit warmer Tuesday, then mostly clear at night.
• lows near 54 highs 82-84.
• Mostly sunny and slightly warmer Wednesday, mostly clear at night,
• Sunny and a bit cooler Thursday, partly cloudy Thursday night and Friday (a bit warmer), mostly clear Friday night,
• Then mostly sunny and a bit warmer Saturday.
• highs 85-83 warming to 86 Saturday lows near 56. (seasonal averages high 85 low 57)

 

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

• Partly cloudy this evening, mostly cloudy late tonight and Sunday AM, mostly sunny and a bit cooler in the afternoon, mostly clear Sunday night with patchy fog late,
• Partly cloudy with patchy AM coastal fog, mostly sunny and a bit cooler Monday afternoon, mostly clear at night,
• Mostly sunny Tuesday, then mostly clear Tuesday night.
• lows near 52 highs near 63.
• Partly cloudy in the AM, sunny Wednesday afternoon, mostly clear at night,
• Mostly sunny Thursday, mostly clear in the evening, mostly cloudy late Thursday night and Friday AM, partly cloudy Friday afternoon and evening, mostly clear late Friday night,
• Then sunny Saturday.
• highs near 63 lows near 54. (seasonal averages high 65 low 53)

 

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Forecast for the Cascades in Lane County:

• Clear tonight,
• Mostly sunny and a bit cooler Sunday, clear at night,
• Sunny and a bit cooler Monday, clear Monday night,
• Sunny and a bit warmer Tuesday, then mostly clear at night.
• free air freezing level 14,000 ft. tonight through Sunday night, 14,000 ft. falling to 13,000 ft. Monday night, 13,000 ft. Tuesday, then 13,000 ft. rising to 14,000 ft. Tuesday night.
• lows 42-44 highs 72-70 warming back to 72 Tuesday.
• Mostly sunny and a bit warmer Wednesday, mostly clear at night,
• Mostly sunny and a bit cooler Thursday, partly cloudy Thursday night and Friday AM, mostly sunny in and a bit warmer the afternoon, mostly clear Friday night,
• Then mostly sunny and a bit warmer Saturday.
• free air freezing level 14,000 ft. Wednesday and Wednesday night, 14,000 ft. falling to 13,000 ft. Thursday, 13,000 ft. rising to 14,000 ft. Thursday night, 14,000 ft. Friday, 14,000 ft. rising to 15,000 ft. Friday night, then 15,000 ft. rising to 16,000 ft. Saturday.
• highs 72-74 lows 44-47.

 

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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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