Here is my weekly weather quiz question for the last time. What is “Acid Precipitation?” Here is the correct answer. Acid Precipitation is precipitation, such as rain, snow or sleet, containing relatively high concentrations of acid-forming chemicals that have been released into the atmosphere and combined with water vapor; harmful to the environment. 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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We get a short break for the weekend and then an upper level trough of low pressure (Shaded “U” shape with blue arrows) moves in to send us more surface storms. Take a look at the 3-day forecast and you’ll see the stationary front that was a warm front when it moved through Oregon Friday. The graphic for days 3-7 show a frontal system moving in Monday and then another one on Friday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 33 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 26 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 23 in the Good category measuringParticulate Matter.

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

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Advisories:

• A Blue-green Algae Health Advisory has been issued for Howard Bay located in Upper Klamath Lake. 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. Cell counts in other parts of the lake were low.
• A  Permanent Health Advisory is 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.
• A Blue-Green Algae 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.

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

• Cloudy this AM, a mix of clouds and sun and a bit warmer this afternoon, partly cloudy tonight,
• Partly cloudy and a bit warmer Sunday, becoming mostly cloudy with a slight (20%) chance of evening rain, a slight (20%) chance of showers late Sunday night,
• Mostly cloudy and a bit cooler Monday (Columbus Day), then partly cloudy with areas of fog late at night.
• highs 73-75 cooling to 72 Monday lows near 52.
• Mostly cloudy with areas of AM fog Tuesday, partly cloudy in the afternoon, clouds increasing to mostly cloudy Tuesday night,
• Cloudy with a good (50%) chance of rain and a bit cooler Wednesday, rain likely (70%)  Wednesday night,
• Then mostly cloudy with rain and a bit cooler Thursday through Friday.
• highs 70-60 lows near 52. (seasonal averages high 68 low 42)

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Your College Football Forecast

Ducks vs. Washington at Autzen Stadium – Kickoff 4:30 PM – A mix of clouds and sun, 73 then cooling as the game progresses, Light Wind.

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Beavers vs California at Reser Stadium – Kickoff 6:00 PM – Partly cloudy, 68 then cooling as the game progresses, Light Wind.

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Forecast for Roseburg:

• Mostly cloudy with patchy fog this morning, mostly sunny and a bit warmer this afternoon, mostly clear tonight,
• Partly cloudy Sunday and in the evening, increasing clouds to  cloudy Sunday night and Monday  AM (Columbus Day), sunny in the afternoon, then partly cloudy at night.
• highs near 76 lows near 52.
• Partly cloudy and a bit cooler Tuesday, just mostly cloudy Tuesday night,
• Cloudy and a bit cooler with a good (50%) chance of rain Wednesday, rain likely (70%) Wednesday night,
• Then rain and a bit cooler Thursday through Friday.
• highs 74-62 lows near 50. (seasonal averages high 70 low 46)

 

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

• Mostly cloudy this AM, mostly sunny and a bit warmer this afternoon, partly cloudy in the evening, mostly clear late tonight,
• Partly cloudy Sunday and in the evening, increasing clouds to cloudy late at night,
• Then mostly cloudy and a bit cooler Monday (Columbus Day) and at night.
• highs near 66 lows near 53.
• Mostly cloudy Tuesday and Tuesday night,
• Mostly cloudy with rain likely (70%) Wednesday and at night,
• Rain and a bit cooler Thursday and Thursday night,
• Then mostly cloudy with rain likely (70%) Friday.
• highs 65-60 lows near 52. (seasonal averages high 62 low 47)

 

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Forecast for the Cascades in Lane County:

• A  mix of clouds and sun and a bit warmer today, partly cloudy tonight and Sunday (a bit warmer) , becoming mostly cloudy with a slight (20%) chance of showers late Sunday night,
• Cloudy with a slight (20%) chance of AM showers, a mix of clouds and sun and a bit cooler Monday afternoon (Columbus Day), then just partly cloudy Monday night.
• free air freezing level 11,000 ft. rising to 12,000 ft. this afternoon, 12,000 ft. tonight and Sunday, then snow level above 8,000 ft. Sunday night,
• highs 66-68 cooling to 64 Sunday lows 45-42.
• Partly cloudy and a bit cooler Tuesday, becoming mostly cloudy Tuesday night,
• Cloudy with a good (50%) chance of rain Wednesday, then rain and a bit cooler Wednesday night through Friday.
• free air freezing level 11,000 ft. Tuesday, 10,000 ft. Tuesday night, snow level 8,000 ft. Wednesday and Wednesday night, above 8,000 ft. Thursday and Thursday night, then 7,000 ft. Friday.
• highs 64-53 lows 42-40.

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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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