Here is my weekly weather quiz question for the last time. What is “Upwelling?” Here is the correct answer. Upwelling in ocean dynamics is the upward motion of sub-surface water toward the surface of the ocean. This is often a source of cold, nutrient-rich water. Strong upwelling occurs along the equator where easterly winds are present. Upwelling also can occur along coastlines, and is important to fisheries and birds in California and Peru. I’ll have a new weekly weather quiz question for you starting Monday. 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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An upper level low (Shaded “U” shape in blue arrows) is still in control of our weather.  Should be dry but cooler than normal for the Labor Day Holiday itself with shower chances returning Monday night. We’re stuck between that low and a high pressure ridge over the Pacific Ocean which means not much change in the current weather pattern. A frontal system moves through Oregon Thursday. There will be a slight break Friday and early Saturday, but more clouds and the chance of showers returns for the rest of the weekend. Here’s another frontal system sliding through the Pacific Northwest next Sunday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 6 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 14 in the Good category measuring Particulate Matter.

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

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Advisories:

• A FREEZE WARNING IS IN EFFECT FROM 3 AM UNTIL 8 AM MONDAY FOR THE KLAMATH BASIN NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A FROST ADVISORY IS IN EFFECT FROM 3 AM UNTIL 8 AM MONDAY FOR THE KLAMATH BASIN NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A health advisory is in effect for ocean water contact at Neskowin Beach located in Tillamook County due to higher than normal levels of fecal bacteria. Contact with the water can result in diarrhea, stomach cramps, skin rashes, upper respiratory infections and other illnesses.Direct contact with the water should be avoided in this area until the advisory is lifted, especially by children and the elderly who may be more vulnerable to waterborne bacteria. Visitors should avoid wading in nearby creeks, pools of water on the beach, or in discolored water, and stay clear of water runoff flowing into the ocean.
• A health advisory remains in effect for water contact at Nye Beach located in Lincoln County due to higher than normal levels of fecal bacteria. Contact with the water can result in diarrhea, stomach cramps, skin rashes, upper respiratory infections and other illnesses.Direct contact with the water should be avoided in this area until the advisory is lifted, especially by children and the elderly who may be more vulnerable to waterborne bacteria. Visitors should avoid wading in nearby creeks, pools of water on the beach, or in discolored water, and stay clear of water runoff flowing into the ocean.
• A health advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.
• 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:

• Partly cloudy tonight,
• A mix of clouds and sun Monday (Labor Day), partly cloudy in the evening, becoming mostly cloudy with a slight (20%) chance of showers late at night,
• Cloudy with AM rain likely (70%), a good (50%) chance of showers and a bit cooler Tuesday afternoon, a slight (20%) chance of showers in the evening, just mostly cloudy late Tuesday night,
• A mix of clouds and sun and a bit warmer Wednesday, then mostly cloudy Wednesday night.
• lows 48-53 cooling to 50 Wednesday night highs 75-70 warming back to 75 Wednesday.
• Partly cloudy and a bit warmer Thursday through Friday AM, mostly sunny and a bit warmer in the afternoon, mostly clear Friday night,
• Mostly sunny Saturday AM, partly cloudy in the afternoon through Sunday AM, then mostly sunny Sunday afternoon.
• highs 78-82 lows 49-54. (seasonal averages high 80 low 49)

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College Football Forecast:

Saturday September 10th- Ducks vs Virginia at Autzen Stadium Kickoff 7:30 PM – Partly cloudy 73 degrees and cooling as the game progresses.

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Saturday September 10th- Beavers have a Bye week.

Next game- Saturday September 17th- Beavers vs Idaho State at Reser Stadium Kickoff Time?? Way too soon for an accurate forecast that far in the future.

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Forecast for Roseburg:

• Partly cloudy tonight,
• Mostly cloudy in the AM, partly cloudy and a bit warmer Monday afternoon (Labor Day) and evening, mostly cloudy with a slight (20%) chance of rain late Monday night,
• Mostly cloudy with a (40%) chance of rain Tuesday AM, a (40%) chance of afternoon showers and a bit cooler, a slight (20%) chance of showers Tuesday night,
• Mostly cloudy with a slight (20%) chance of showers Wednesday AM, then partly cloudy and a bit warmer in the afternoon and Wednesday night.
• lows 49-55 highs 78-74 warming to 80 Wednesday
• Partly cloudy an a bit warmer Thursday through Friday AM, sunny in the afternoon, clear Friday night,
• Mostly sunny and a bit warmer Saturday, mostly clear at night,
• Partly cloudy in the AM, then sunny but just a bit cooler Sunday afternoon.
• highs 84-92 cooling to 88 Sunday lows 53-56. (seasonal averages high 82 low 53)

 

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

• Partly cloudy this evening, increasing clouds to mostly cloudy late tonight,
• Mostly cloudy in the AM, partly cloudy Monday afternoon (Labor Day) and in the evening,  mostly cloudy with a slight (20%) chance of rain late Monday night,
• Mostly cloudy with a (40%) chance of AM rain, a (40%) chance of showers Tuesday afternoon, a slight (20%) chance of evening coastal showers while a slight (20%) chance of inland showers Tuesday night,
• Mostly cloudy with a slight (20%) chance of showers Wednesday AM, then partly cloudy and a bit warmer in the afternoon and Wednesday night.
• lows near 53 highs 65-67.
• Partly cloudy and a bit warmer Thursday and Thursday night,
• Mostly sunny and a bit warmer Friday and Saturday, mostly clear Friday night, partly cloudy Saturday night,
• Then partly cloudy and a bit warmer Sunday.
• highs 68-70 lows 52-54. (seasonal averages high 66 low 52)

 

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Forecast for the Cascades in Lane County:

• Partly cloudy tonight,
• Partly cloudy and a bit warmer Monday (Labor Day), partly cloudy in the evening, more clouds to mostly cloudy late Monday night,
• Mostly cloudy with AM rain likely (70%), showers likely (60%) and cooler Tuesday afternoon, a good (50%) chance of evening showers, just mostly cloudy late Tuesday night,
• A mix of clouds and sun and warmer Wednesday, then partly cloudy Wednesday night.
• free air freezing level 9,000 ft. tonight, 10,000 ft. Monday, 11,000 ft. Monday night, snow level above 8,000 ft. Tuesday and Tuesday night, free air freezing level 13,000 ft. Wednesday, then 12,000 ft. Wednesday night.
• lows 35-40 highs 60-50 warming back to near 60 Wednesday.
• Partly cloudy and a bit warmer Thursday through Friday AM, mostly sunny and a bit warmer Friday afternoon, Saturday and Sunday, mostly clear each night.
• free air freezing level 13,000 ft. Thursday, 12,000 ft. Thursday night, 13,000 ft. Friday, 14,000 ft. Friday night and Saturday, then 12,000 ft. Saturday night and Sunday.
• highs 65-72 lows 40-45.

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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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