Here is my 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 keep us in relatively normal temperatures for this summer season. Upper level Southwesterly airflow will keep our weather relatively stable. Weak disturbances will sneak through dropping temperatures a bit and then the rise and fall all over again. The graphics for days 3-7 show a frontal system moving toward the Pacific Coast Tuesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 45 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 22 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 46 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,
• Sunny and a bit cooler Saturday, clear Saturday night,
• Partly cloudy in the AM, mostly sunny and a bit cooler Sunday, clear at night,
• AM clouds, sunny Monday, then clear Monday night.
• lows near 52 highs near 80.
• Sunny Tuesday and Wednesday, clear each night,
• Sunny Thursday, then party cloudy Thursday night and Friday.
• highs 82-80 lows 52-54. (seasonal averages high 82 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:

• Clear tonight,
• Sunny and a bit cooler Saturday and Sunday, clear both nights,
• Mostly sunny Monday, then mostly clear at night.
• lows 56-53 highs 84-82.
• Sunny and a bit warmer Tuesday, clear Tuesday night,
• Mostly sunny and slightly warmer Wednesday, mostly clear at night,
• Sunny and a bit cooler Thursday, then partly cloudy with a slight (20%) chance of showers Thursday night and Friday (a bit warmer).
• highs 84-82 warming back to 84 Friday lows 54-57. (seasonal averages high 84 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 coastal fog late tonight and Saturday AM, sunny in the afternoon, mostly clear in the evening, partly cloudy late Saturday night,
• AM clouds, mostly sunny Sunday afternoon, mostly clear, at night,
• Mostly sunny Monday, then mostly clear at night.
• lows near 52 highs near 62.
• Mostly sunny Tuesday, mostly clear Tuesday night,
• Partly cloudy in the AM, sunny Wednesday afternoon, mostly clear in the evening at night,
• Mostly sunny Thursday, mostly clear in the evening, mostly cloudy with a slight (20%) chance of showers Thursday night and Friday AM, then just partly cloudy Friday afternoon.
• highs near 63 lows near 54. (seasonal averages high 65 low 53)

 

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Forecast for the Cascades in Lane County:

• Mostly clear tonight,
• Mostly sunny and a bit cooler Saturday, mostly clear Saturday night,
•  Sunny Sunday, mostly clear at night,
• Sunny Monday, then clear Monday night.
• free air freezing level 15,000 ft. tonight, then 14,000 ft. Saturday through Monday night.
• lows 49-43 warming to 45 Friday night highs near 72.
• Mostly sunny and a bit warmer Tuesday, Wednesday, mostly clear both nights,
• Mostly sunny and a bit cooler Thursday, partly cloudy Thursday night,
• Partly cloudy in the AM, then mostly sunny and a little bit warmer  Friday afternoon.
• free air freezing level 13,000 ft. Tuesday and Tuesday night, 14,000 ft. Wednesday and Wednesday night, 14,000 ft. falling to 13,000 ft. Thursday, 13,000 ft. Thursday night, then 13,000 ft. rising to 14,000 ft. Friday.
• 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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