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 14 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 7 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:

• Partly cloudy this AM, mostly sunny and a bit cooler this afternoon, clear tonight,
• AM clouds, sunny and a bit warmer Monday afternoon, clear Monday night,
• AM clouds, sunny Tuesday, clear at night.
• highs 80-83 lows near 50.
• 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 83-80 warming to 82 Friday and Saturday 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:

• AM clouds, sunny and a bit cooler this afternoon, clear tonight,
• Sunny Monday, mostly clear Monday night,
• Sunny and a bit warmer Tuesday, then mostly clear at night.
• highs 82-84 lows 53-55.
• 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:

• Mostly cloudy this AM, mostly sunny and a bit cooler this afternoon, mostly clear tonight with patchy fog late,
• Partly cloudy with patchy AM coastal fog and drizzle, mostly sunny and a bit cooler Monday afternoon, mostly cloudy with patchy coastal drizzle Monday night while partly cloudy with patchy fog inland late at night,
• Patchy AM fog with patchy coastal drizzle, mostly sunny Tuesday afternoon, then partly  cloudy with patchy fog late Tuesday night.
• highs near 63 lows near 52.
• Partly cloudy with patchy AM fog, partly cloudy Wednesday afternoon, partly cloudy with patchy fog late at night,
• Partly cloudy wit patchy AM fig, mostly sunny Thursday afternoon, 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:

• Mostly sunny and a bit cooler today, clear tonight,
• Sunny and a bit warmer Monday, clear Monday night,
• Sunny and a bit warmer Tuesday, then mostly clear at night.
• free air freezing level 14,000 ft. today and tonight, 13,000 ft. Monday, 13,000 ft. rising to 14,000 ft. Monday night, 13,000 ft. Tuesday, then 13,000 ft. rising to 14,000 ft. Tuesday night.
• highs 70-73 lows 43-45.
• 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 and a bit warmer in 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 73-70 warming to 74 Saturday 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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