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 31 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 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:

• Mostly clear tonight,
• Mostly sunny Tuesday and Wednesday, clear both nights,
• Mostly sunny and a bit cooler Thursday, clear at night.
• lows 50-52 highs 80-84 cooling back to 80 Thursday.
• 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 81 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.

 

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Forecast for Roseburg:

• Mostly clear tonight,
• Sunny Tuesday and Wednesday, clear both nights,
• Sunny Thursday, then clear at night.
• lows 52-56 highs near 84.
• Sunny and a bit warmer Friday and Saturday, mostly clear both nights,
• Mostly sunny Sunday and Monday (a bit cooler), mostly clear Sunday night.
• highs 86-88 cooling to 85 Monday lows near 58. (seasonal averages high 83 low 56)

 

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

• Mostly clear this evening, mostly cloudy with patchy fog late tonight,
• Partly cloudy with patchy AM fog Tuesday, sunny and a bit warmer in the afternoon, mostly clear in the evening, partly cloudy with patchy coastal fog late at night,
• Partly cloudy with patchy AM coastal fog, sunny and a bit warmer Wednesday 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.
• lows near 50-53 highs near 63.
• 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:

• Clear tonight,
• Sunny and a bit warmer Tuesday, Wednesday, and Thursday, clear each night,
• Mostly sunny and a little bit warmer Thursday, mostly clear Thursday night.
• free air freezing level 14,000 ft. rising to 15,000 ft. tonight, 15,000 ft. Tuesday through Wednesday, 15,000 ft. rising top 6,000 ft. Wednesday night, then 16,000 ft. falling to 15,000 ft. Thursday night.
• lows 44-49 highs 74-76.
• 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 78-82 cooling to 80 Sunday lows 49-53.

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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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