Here is my 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.

________________

The Jet Stream (Shaded area with blue arrows) continues to bring westerly airflow our way. That means a continuation of  the ocean moisture feed to the Pacific Northwest. Short-lived High Pressure drys us out a little Friday afternoon and early Saturday, but you can see on days 3 through 7 a series of frontal systems will march into the Pacific Northwest.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 31 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 39 in the Good category measuring Particulate Matter.

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

________________

Home Wood Heating Advisory:

Eugene-Springfield: GREEN – Burning is Allowed.

Oakridge: GREEN – Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

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:

• Cloudy with a good (50%) chance of rain this evening, rain late tonight (0.25 in. of rain possible),
• Mostly cloudy with AM rain, showers and a bit warmer Thursday afternoon (0.50 in. of rain possible), evening showers, a slight (20%) chance of showers late  at night (under 0.10 in. of rain possible),
• A mix of clouds and sun and a bit cooler with increasing clouds by late afternoon Friday, mostly cloudy with a slight (20%) chance of showers Friday night,
• A mix of clouds and sun and a bit cooler with increasing clouds and a slight (20%) chance of showers Saturday, then mostly cloudy with rain becoming likely (70%) at night.
• lows 52-45 warming to 48 Saturday night highs 63-58.
• Cloudy with a good (50%) chance of rain Sunday, rain likely (70%) Sunday night,
• Mostly cloudy and a bit cooler with showers likely (70%) Monday, cloudy with a good (50%) chance of rain Monday night,
• Mostly cloudy with a (40%) chance of rain Tuesday, then mostly cloudy with a (30%) chance of rain Tuesday night and Wednesday.
• highs 60-58 lows 48-46 warming back to 48 Tuesday night. (seasonal averages high 63 low 41)

_____

Your College Football Forecast:

Friday October 21st:

Ducks vs California at California Memorial Stadium, Berkeley, CA – Kickoff 7:30 PM – Partly cloudy 66 and cooling as the game progresses, Wind WSW 5-10 mph.

_____

Saturday October 22nd:

Beavers vs Washington at  Husky Stadium, Seattle, WA – Kickoff 3:30 PM – Mostly cloudy, a chance of showers that will increase throughout the game 59 and cooling as the game progresses, Wind S 5 mph.

 

________________

Forecast for Roseburg:

• Cloudy with a (30%) chance of rain tonight,
• A slight (20%) chance of rain Thursday AM, rain likely (70%) in the afternoon (under 0.10 in. of rain possible), evening showers, a (40%) chance of showers late Thursday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Friday, a slight (20%) chance of evening showers, partly cloudy late at night and Saturday AM, mostly cloudy and a bit warmer with a slight (20%) chance of rain in the afternoon, then rain Saturday night.
• lows 52-50 highs 66-60 warming to 63 Saturday.
• Mostly cloudy with rain Sunday, rain likely (70%) Sunday night,
• Rain Monday AM, showers and a bit cooler in the afternoon, rain likely (70%) Monday night,
• Mostly cloudy and a bit warmer with a (40%) chance of rain Tuesday and at night,
• Then mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday.
• highs 63-58 warming to 62 Wednesday lows 50-47. (seasonal averages high 65 low 44)

________________

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

• Cloudy with a (30%) chance of rain tonight (under 0.10 in. of rain possible),
• Mostly cloudy a bit cooler with coastal showers Thursday while inland rain likely (70%) (0.25 in. of rain possible), evening showers, a (40%) chance of showers late at night (under 0.10 in. of rain possible),
• Just mostly cloudy and a bit cooler Friday and at night,
• Partly cloudy in the AM, becoming mostly cloudy and a bit warmer with a good (50%) chance of rain Saturday afternoon, then rain Saturday night.
• lows 55-52 highs 64-60.
• Mostly cloudy and a bit warmer with rain Sunday through Monday AM, showers and a bit cooler in the afternoon, rain Monday night,
• Rain likely (70%) Tuesday, then mostly cloudy with a (30%) chance of rain Tuesday night and Wednesday.
• highs 63-59 lows near 50. (seasonal averages high 61 low 46)

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of rain tonight (under 0.10 in. of rain possible),
• Mostly cloudy with rain Thursday AM, a bit warmer with showers in the afternoon (0.35 in. of rain possible), showers at night decreasing to a (30%) chance of showers late Thursday night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Friday, partly cloudy with a (40%) chance of showers at night,
• Just partly cloudy and a bit warmer Saturday, increasing clouds to cloudy with a good (50%) chance of rain Saturday night.
• snow level above 8,000 ft. tonight through Thursday night, 8,000 ft. falling to 7,000 ft. Friday, 6,500 ft. Friday night, free air freezing level  7,000 ft. Saturday, then snow level 7,000 ft. Saturday night.
• lows 38-32 highs 50-48.
• Mostly cloudy and a bit cooler with rain likely (70%) Sunday, cloudy with a good (50%) chance of rain or snow at night,
• Mostly cloudy and a bit cooler with showers Monday, rain or snow Monday night,
• Mostly cloudy with a good (50%) chance of rain or snow and a bit warmer Tuesday, a (40%) chance of rain or snow at night,
• Then a (30%) chance of rain or snow and a bit cooler Wednesday.
• snow level 6,500 ft. Sunday, 6,500 ft. falling to 5,000 ft. Sunday night,  5,000 ft. Monday through Tuesday, 5,500 ft. Tuesday night, then 5,000 ft. Wednesday.
• highs 45-42 warming to 48 Tuesday cooling to 44 Wednesday lows 34-32.
  ________________

**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.

________________