Here is my weekly weather quiz question. What is a “Banner Cloud?” 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 Low Pressure Trough (Shaded “U” shape with blue arrows) moves up toward the coast allowing for more inland warming. The graphics for days 1-3 show the weak cool front that passes just north of us cooling temperatures a bit. The graphics for days 3-7 show the next frontal systems approaching the Pacific Northwest and trying to move in Friday and next Monday.

Enjoy the 4th of July, but please be careful with any fireworks and don’t drink and drive a motor vehicle or a boat.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 26 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 38 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 33 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

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Advisories:

•  A Health Advisory has been issued 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:

• Patchy AM clouds, mostly sunny and a bit warmer today (Independence Day), clear tonight,
• Sunny and a bit warmer Wednesday, clear in the evening, partly cloudy late Wednesday night,
• Mostly sunny and a bit cooler Thursday, clear in the evening, mostly cloudy late Thursday night.
• highs 85-87 cooling back to 85 Thursday lows 55-53.
• Mostly cloudy Friday AM, sunny and a bit cooler in the afternoon, mostly clear at night,
• Mostly sunny and a bit cooler Saturday, partly cloudy Saturday night,
• Partly cloudy and a bit warmer Sunday, then partly cloudy Sunday night and Monday.
• highs 83-85 cooling back to 83 Monday lows near 54. (seasonal averages high 79 low 50)

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Eugene-Springfield Pollen Count

Grass………. High (100)

Trees………. Moderate (16)

Last Counted: 6/30/17

Data Courtesy of Oregon Allergy Associates.

 

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Forecast for Roseburg:

• Sunny and a bit warmer today (Independence Day), mostly clear tonight,
• Mostly sunny Wednesday, mostly clear Wednesday night,
• Sunny and a bit cooler Thursday, partly clear at night.
• highs near 87 lows near 58.
• Partly cloudy and a bit cooler Friday, mostly clear Friday night,
• Mostly sunny Saturday, partly cloudy Saturday night,
• Partly cloudy and a bit cooler Sunday, mostly clear at night,
• Then mostly sunny and a bit cooler Monday.
• highs 85-83 lows near 58. (seasonal averages high 82 low 55)

 

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

• Mostly cloudy with patchy AM coastal fog, sunny this afternoon (Independence Day), mostly clear tonight,
• Sunny Wednesday AM, partly cloudy and a bit cooler in the afternoon, mostly cloudy with patchy coastal fog late Wednesday night while mostly clear inland,
• Partly cloudy with patchy fog Thursday AM, mostly sunny in the afternoon, then partly cloudy with patchy fog at night.
• highs 64-62 warming back to 64 Thursday lows near 54.
• Partly cloudy with patchy AM fog, partly cloudy Friday afternoon, then partly cloudy Friday night through Monday,
• highs near 64 lows near 55. (seasonal averages high 64 low 52)

 

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Forecast for the Cascades in Lane County:

• Mostly sunny and a bit warmer today (Independence Day), mostly clear tonight,
• Sunny Wednesday AM, partly cloudy with a slight (20%) chance of showers and thunderstorms late in the afternoon and Wednesday night,
• Partly cloudy and a bit cooler Thursday and in the evening, then clear at night.
• free air freezing level 15,000 ft. today and tonight, snow level above 8,000 ft. Wednesday and Wednesday night, free air freezing level 14,000 ft. Thursday, then 14,000 ft. rising to 15,000 ft. Thursday night.
• highs 78-80 cooling back to 78 Thursday lows 52-50.
• Sunny and a bit cooler Friday, clear Friday night,
• Mostly sunny and a bit cooler Saturday, mostly clear at night,
• Sunny and a bit cooler Sunday, mostly clear Sunday night,
• Then mostly sunny and a bit cooler Monday.
• free air freezing level 15,000 ft. Friday through Monday,
• highs 76-72 lows 50-48.

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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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