Here is my new weekly weather quiz question. What is an “Active Storage Capacity?”  Please remember to post your answer at the bottom of this page. An email will not suffice. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

________________

An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows)continues to bring westerly airflow our way. That means a continuation of  the Pacific Ocean moisture feed to the Pacific Northwest. Short-lived High Pressure drys us out midweek, but you can see on days 3 through 7 frontal activity returns by Friday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 8 in the Good category measuringParticulate Matter.

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

________________

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.

________________

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

• Mostly cloudy with showers and a bit warmer this afternoon with possible sun breaks and a slight (20%) chance of thunderstorms (0.25 in. of rain possible, more in storms), showers likely (70%) tonight (0.25 in. of rain possible),
• Mostly cloudy with a good (50%) chance of showers AM showers, a mix of clouds and sun and a bit warmer with a good (50%) chance of showers Tuesday afternoon (0.10 in. of rain possible), mostly cloudy in the evening, partly cloudy late at night,
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday, then mostly cloudy with a good (50%) chance of rain Wednesday night.
• highs 58-60 lows near 50.
• A mix of clouds and sun and a bit warmer with a (40%) chance of showers Thursday, partly cloudy with a (30%) chance of showers at night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Friday, mostly cloudy with a slight (20%) chance of showers Friday night,
• Then a mix of clouds and sun and a bit cooler Saturday and Sunday, partly cloudy Saturday night.
• highs 66-60 lows near 50. (seasonal averages high 64 low 41)

_____

Your College Football Forecast:

Friday October 21st – Preliminary Forecast:

Ducks vs California at California Memorial Stadium, Berkeley, CA – Kickoff 7:30 PM – Mostly clear 73 and cooling as the game progresses, Wind N 5 mph.

_____

Saturday October 22nd – Preliminary Forecast:

Beavers vs Washington at  Husky Stadium, Seattle, WA – Kickoff 3:30 PM – Partly cloudy 57 and cooling as the game progresses, Wind Light.

 

________________

Forecast for Roseburg:

• Mostly cloudy with showers and a slight (20%) chance of thunderstorms this afternoon (0.25 in. of rain possible, more in storms), showers tonight (0.25 in. of rain possible),
• Mostly cloudy with showers likely (70%) in the AM, a good (50%) chance of showers and a bit warmer Tuesday afternoon (under 0.10 in. of rain possible), just mostly cloudy at night,
• Mostly cloudy with a slight (20%) chance of showers and a bit warmer Wednesday, a slight (20%) chance of rain Wednesday night.
• highs 60-66 lows near 48.
• Mostly cloudy and a bit warmer with a slight (20%) chance of showers Thursday through Friday night,
• Then just mostly cloudy and a bit cooler Saturday through Sunday.
• highs 70-64 lows 52-48. (seasonal averages high 66 low 44)

________________

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

• Mostly cloudy with showers and a slight (20%) chance of thunderstorms this afternoon (0.25 in. of rain possible), coastal showers with a slight (20%) chance of thunderstorms tonight while inland evening showers and showers with a slight (20%) chance of thunderstorms inland late tonight (0.25 in. of rain possible),
• Mostly cloudy with AM showers likely (70%) and a slight (20%) chance of thunderstorms while inland showers likely (70%), a good (50%) chance of showers and a bit warmer Tuesday afternoon (0.10 in. of rain possible), just mostly cloudy Tuesday night,
• Mostly cloudy with a (30%) chance of showers and a bit warmer Wednesday, then mostly cloudy with a slight (20%) chance of rain Wednesday night.
• highs 60-65 lows 50-52.
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Thursday through Friday, then just mostly cloudy Friday night through Sunday.
• highs 64-62 lows 53-50. (seasonal averages high 61 low 46)

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy with rain and snow showers and a bit cooler this afternoon (0.25 in. of rain possible, 1-2 in. of snow possible), rain and snow showers this evening, showers likely (70%) late tonight (0.50 in. of rain possible, 2-5 in. of snow possible),
• Cloudy with AM rain and snow showers likely (70%), a good (50%) chance of rain and snow showers Tuesday afternoon (0.10 in. of rain possible, 1.00 in. of snow possible), just mostly cloudy at night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of showers Wednesday, mostly cloudy with a slight (20%) chance of rain Wednesday night.
• snow level 5,500 ft. today through Tuesday night, 8,000 ft. Wednesday, then above 8,000 ft. Wednesday night.
• highs 42-48 lows 35-32 warming to 40 Wednesday night.
• A mix of clouds and sun and a bit warmer Thursday, partly cloudy with a (30%) chance of showers Thursday night,
• Partly cloudy and a bit warmer with a slight (20%) chance of showers Friday, just partly cloudy at night,
• A mix of clouds and sun and a bit cooler Saturday, then just partly cloudy Saturday night and Sunday.
• snow level above 8,000 ft. Thursday through Friday, free air freezing level 10,000 ft. Friday night, then 9,000 ft. Saturday through Sunday.
• highs 57-53 lows near 42.
  ________________

**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.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________