Here is my new weekly weather quiz question. What are “Wind Waves?” 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 ridge of high pressure (Shaded “Arch” shape in blue arrows) has kept us warm and dry. An upper level low pressure trough helps change our weather this week. A frontal system pushes through Tuesday bringing cooler temperatures. Looks like more frontal activity for your Thursday. Then by next Monday a frontal system approaches the coast.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 23 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 21 in the Good category measuring Particulate Matter.

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

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Advisories:

• 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:

• Mostly clear tonight,
• A mix of clouds and sun and cooler Tuesday, partly cloudy and colder with patchy fog late Tuesday night and  Wednesday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy with patchy fog late Wednesday night,
• Clouds and sun with patchy AM fog, mostly sunny and a bit cooler Thursday afternoon, partly cloudy with a slight (20%) chance of showers late Thursday night.
• lows 54-45 highs 78-70.
• A mix of clouds and sun with a slight (20%) chance of showers Friday AM, increasing clouds and a bit cooler with rain likely (70%) in the afternoon, showers likely (70%) Friday night,
• Mostly cloudy with showers likely (70%) Saturday through Sunday AM, then a bit cooler with a rain likely (70%) Sunday afternoon and at night,
• Mostly cloudy with rain likely (60%) Monday AM, then a (40%) chance of afternoon showers.
• highs 62-59 warming to 62 Monday lows 46-49. (seasonal averages high 73 low 45)

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Your College Football Forecast

Saturday October 1st – Preliminary forecasts

Ducks vs. Washington State at Martin Stadium, Pullman, WA – Kickoff  (Time TBT) PM – Mostly sunny, High 60, Wind WSW 5-10 mph.

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Beavers vs Colorado at  Folsom Stadium, Boulder, CO – Kickoff 11:30 AM – Mostly sunny 68 warming to near 78 by the end of the game, Wind E 5-10 mph.

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Forecast for Roseburg:

• Mostly clear this evening, mostly cloudy with patchy fog and a slight (20%) chance of rain and drizzle late tonight,
• Cloudy with patchy AM fog and a slight (20%) chance of rain and drizzle, just partly cloudy and a bit cooler Tuesday afternoon, mostly clear in the evening, partly cloudy with patchy fog late at night and Wednesday AM, sunny and a bit cooler in the afternoon, mostly clear in the evening, partly cloudy with patchy fog late Wednesday night,
• Mostly cloudy with patchy AM fog with a slight (20%) chance of rain and drizzle, partly cloudy and a bit cooler Thursday afternoon and in the evening, mostly cloudy with a slight (20%) chance of showers late Thursday night.
• lows 56-44 highs 82-73.
• Mostly cloudy with a (40%) chance of showers and  slight (20%) chance of thunderstorms and a bit cooler Friday and Friday night,
• Mostly cloudy and a bit cooler with a (%) chance of showers Saturday through Sunday AM, then rain likely (70%) Sunday afternoon through Monday.
• highs near 65 lows 47-45 warming to 50Sunday night. (seasonal averages high 75 low 49)

 

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

• Mostly cloudy with patchy fog and a slight (20%) chance of coastal rain and drizzle tonight while partly cloudy inland this evening, patchy fog with a slight (20%) chance of inland rain and drizzle late tonight,
• Cloudy with patchy fog and a slight (20%) chance of rain and drizzle Tuesday AM, partly cloudy and a bit cooler in the afternoon and at night with patchy fog late at night,
• Partly cloudy with patchy AM fog, mostly sunny and a bit cooler Wednesday afternoon, mostly clear in the evening, mostly cloudy late at the shore while clear in the evening inland and partly cloudy with a slight (20%) chance of rain and drizzle late at night with patchy fog,
• Mostly cloudy with patchy AM fog, partly cloudy and a bit cooler Thursday afternoon and evening, then mostly cloudy with a slight (20%) chance of showers late Thursday night.
• lows 55-47 highs 67-65.
• Mostly cloudy and a bit cooler with a (40%) chance of showers Friday AM, showers likely (70%) with a slight (20%) chance of thunderstorms in the afternoon and evening, a good (50%) chance of showers late Friday night,
• A (%) chance of showers in the AM, showers likely (70%) Saturday afternoon and evening, a (%) chance of showers late Saturday night,
• Then mostly cloudy with showers likely (70%)  Sunday through Monday.
• highs 62-64 lows 50-52. (seasonal averages high 64 low 48)

 

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Forecast for the Cascades in Lane County:

• Clear and cooler tonight,
• Sunny and cooler Tuesday, clear Tuesday night,
• Mostly sunny and a bit cooler Wednesday, mostly clear at night,
• Mostly sunny Thursday AM, partly cloudy and a bit cooler in the afternoon, partly cloudy with a slight (20%) chance of showers Thursday night.
• free air freezing level 15,000 ft. falling to 14,000 ft. late tonight, 13,000 ft. Tuesday, 14,000 ft. Tuesday night, 13,000 ft. Wednesday and Wednesday night, 12,000 ft. Thursday, then snow level above 8,000 ft. falling to 8,000 ft. late Thursday night.
• lows 46-35 highs 68-60.
• Mostly cloudy with a slight (20%) chance of AM showers, a good (50%) chance of rain and a bit cooler Friday afternoon and evening, partly cloudy with a good (50%) chance of rain and snow showers late Friday night through Sunday AM, cloudy and a bit cooler with rain likely (70%) Sunday afternoon and evening, a good (50%) chance of rain late at night,
• Cloudy with a good (50%) chance of AM rain, then a good (50%) chance of showers Monday afternoon.
• snow level 8,000 ft. falling to  6,500 ft. Friday afternoon, 5,500 ft. Friday night through Sunday, then 6,000 ft. Sunday night and Monday.
• highs 46-42 warming to 45 Monday lows 30-34.

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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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