Here is my new weekly weather quiz question. What is a “Barber Pole?” (In Meteorology) 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 going to warm us back up a bit. The graphics for days 1-3 show a frontal system approaching the Oregon Coast Wednesday. The graphics for days 3-7 show the frontal system that slowly moves across the Pacific Northwest Thursday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 25 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 18 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:

• Mostly sunny and a bit cooler this afternoon, clear tonight,
• Sunny Wednesday and Thursday, clear both nights.
• highs 80-83 lows near 52.
• Sunny and a bit warmer Friday and Saturday, clear both nights,
• Then sunny Sunday and Monday ( a bit cooler), clear Sunday night,
• highs 84-86 cooling to 82 Monday lows near 53. (seasonal averages high 82 low 51)

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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 we are at the end of the pollen season.

 

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Forecast for Roseburg:

• Sunny today and Wednesday, clear both nights,
• Sunny Thursday, then clear at night.
• highs near 84 lows 53-56.
• Sunny and a bit warmer Friday and Saturday, mostly clear both nights,
• Mostly sunny Sunday, mostly clear Sunday night,
• Then sunny Monday.
• highs 86-88 cooling to 85 Monday lows 58-56. (seasonal averages high 84 low 56)

 

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

• Sunny and a bit warmer this afternoon, mostly clear this evening, partly cloudy with patchy coastal fog late tonight and Wednesday AM, sunny and a bit warmer in the afternoon, mostly cloudy in the evening, partly cloudy with patchy coastal fog Wednesday night and Thursday AM, mostly sunny in the afternoon, then partly cloudy with patchy fog Thursday night.
• highs near 63 lows near near 53.
• Patchy AM fog,partly cloudy Friday afternoon, mostly clear with patchy fog late at night,
• Patchy AM fog, mostly sunny Saturday afternoon,  then partly cloudy Saturday night through Monday.
• highs near 63 lows near 54. (seasonal averages high 64 low 53)

 

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Forecast for the Cascades in Lane County:

• Sunny and a bit warmer today, Wednesday, and Thursday, clear each night,
• free air freezing level 15,000 ft. today through Wednesday, 15,000 ft. rising to 16,000 ft. Wednesday night, then 15,000 ft. Thursday  and Thursday night.
• highs 74-76 lows 46-49.
• Sunny and a bit warmer Friday, clear at night,
• Mostly sunny and a bit warmer Saturday, partly cloudy Saturday night,
• Partly cloudy in the AM, mostly and a bit cooler Sunday afternoon and Monday, mostly clear Sunday night.
• free air freezing level 15,000 ft. Friday through Monday.
• highs 80-82 cooling to 76 Monday lows near 50.

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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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