Here is my new weekly weather quiz question. What is a “Swell?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

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Upper level high pressure (“Arch” shape with blue arrows) has warmed us up to well above normal temperatures. An upper level low pressure trough will start cooling us down. A cold front will be approaching the Pacific Northwest over the weekend moving through  Sunday night and Monday bringing the temperatures back down to normal again.

 

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Air Quality Index:

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

Oakridge: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 32 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• A FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE CENTRAL MOUNTAINS OF OREGON AND THE CENTRAL BLUE MOUNTAINS OF OREGON.
• A Blue-Green Algae health advisory is in effect for Odell Lake in Lane County. Water testing has confirmed the presence of blue-green algae and the toxins they produce. 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.
• A Blue-Green Algae health advisory remains in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake ONLY. 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.

 

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Sunny and hot again today, clear tonight,
• Mostly sunny and cooler Saturday, mostly clear in the evening, mostly cloudy late Saturday night and Sunday AM, partly cloudy in the afternoon and evening, then mostly clear Sunday night.
• highs 93-82 lows 54-52.
• A mix of clouds and sun Monday AM, mostly sunny and a bit warmer in the afternoon, partly cloudy in the evening, mostly cloudy late Monday night and Tuesday AM, mostly sunny and a bit cooler Tuesday afternoon, partly cloudy at night,
• Then mostly sunny and a bit warmer Wednesday and Thursday, clear Wednesday night.
• highs 84-80 warming to 85 Thursday lows near 53. (seasonal averages high 84 low 52)

 

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Eugene-Springfield Pollen Count:

Grass………. Moderate (5)

Trees………. Low (0)

Last Counted: 7/26/16

Data Courtesy of Oregon Allergy Associates.

The Grass and Tree Pollen season is officially over now.

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Forecast for Roseburg:

• Sunny today, clear this evening, partly cloudy late tonight and Saturday AM, sunny and cooler in the afternoon, clear in the evening, partly cloudy late Saturday night,
• Mostly cloudy Sunday AM, partly cloudy and a bit cooler in the afternoon, then mostly clear at night.
• highs 95-87 lows 60-56.
• Mostly sunny Monday, partly cloudy Monday night and Tuesday, mostly clear Tuesday night,
• Sunny Wednesday, mostly clear at night,
• Then mostly sunny Thursday.
• highs near 86 lows near 57. (seasonal averages high 86 low 57)

 

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

• Mostly cloudy this AM, sunny this afternoon, partly cloudy this evening, mostly cloudy late tonight and Saturday AM, sunny and a bit cooler in the afternoon, partly cloudy in the evening, mostly cloudy late Saturday night,
• Then mostly cloudy Sunday AM, partly cloudy in the afternoon and Sunday night.
• highs 68-66 warming back to 68 Sunday lows near 56.
• Mostly cloudy Monday, partly cloudy in the evening, mostly cloudy Monday night and Tuesday AM, sunny in the afternoon, mostly clear in the evening, partly cloudy late Tuesday night,
• Mostly sunny and a bit cooler Wednesday and Thursday, partly cloudy Wednesday night.
• highs 68-66 lows near 56. (seasonal averages high 65 low 53)

 

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Forecast for the Cascades in Lane County:

• Sunny today, clear tonight,
• Sunny and cooler Saturday, mostly clear at night,
• Mostly sunny and a bit cooler Sunday, then mostly clear Sunday night.
• free air freezing level 16,000 ft. tonight through Sunday night,
• highs 85-73 lows 52-45.
• Mostly sunny and a bit warmer Monday, partly cloudy Monday night and Tuesday AM, sunny but cooler Tuesday afternoon, clear at night,
• Then sunny and a bit warmer Wednesday and Thursday, clear Wednesday night.
• free air freezing level 15,000 ft. Monday, 14,000 ft. Monday night through Wednesday night, then 15,000 ft. Thursday.
• highs 75-67 warming to 73 Thursday lows 43-47.

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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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