______________

Check out my latest Eugene Daily News Weather Or Not Column What’s In A Name? It’s “Deja Vu” All Over Again.

________________

Here is my weekly weather quiz question. What is “Popcorn Convection?” 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. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

Advisories:

A Blue-Green Algae warning continues for Dexter Reservoir, Dorena Reservoir, and Fern Ridge Reservoir.  Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

________________

An upper level low pressure trough (Shaded area “U” shape offshore) is slowly starting to move our way. Look for a chance of showers and thunderstorms for your Thursday as the low slides through Oregon.  Autumn begins at 1:44 PM Friday September 22nd so Summer is nearly over.

________________

The Grass Pollen Count is listed as Absent at 0 and Tree pollen is Low at 2 as of 8/27/13 according to Oregon Allergy Associates. The Season is over.

________________

Your Saturday College Football Forecasts:

The Ducks vs Virginia at Scott Stadium, Charlottesville, Virginia: Kickoff 12:30 PM (3:30 PM EDT)- Partly cloudy, temperature near 80 cooling through the 70s as the game progresses.

The Beavers vs Hawaii at Reser Stadium, Corvallis: Kickoff 5:00 PM- Sunny, temperature at day’s high of 80 cooling through the 70s as the game concludes.

________________

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

• Mostly cloudy with a good (50%) chance of scattered showers and a slight (20%) chance of isolated thunderstorms tonight (0.10 in. of rain possible, more in storms).
• Mostly cloudy with showers and a (30%) chance of thunderstorms Thursday AM, showers with a slight (20%) chance of thunderstorms in the afternoon (0.25 in. of rain possible, more in storms), a good (50%) chance of showers Thursday night (0.10 in of rain possible).
• A mix of clouds and sun Friday with a (40%) chance of AM showers, partly cloudy Friday night (under 0.10 in. of rain possible).
• Partly cloudy Saturday AM, mostly sunny in the afternoon, then partly cloudy Saturday night.
• lows 57-49 highs 72-80.
• Partly cloudy Sunday AM, mostly sunny in the afternoon, partly cloudy Sunday night.
• Mostly sunny Monday through Wednesday with mostly clear nights.
• highs 84-87 lows 53-56. (seasonal averages high 80 low 50)

________________

Forecast for the Umpqua Basin including Roseburg:

• Mostly cloudy with a (30%) chance of isolated thunderstorms this evening, a (%) of showers late tonight (under 0.10 in. of rain possible).
• Mostly cloudy with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Thursday AM, showers likely (70%) with a slight (20%) chance of showers in the afternoon and evening (0.15 in. of rain possible), a (40%) chance of evening showers and a slight (20%) chance of thunderstorms, partly cloudy late Thursday night (under 0.10 in. of rain possible).
• Mostly cloudy with a slight (20%) chance of showers Friday AM, partly cloudy and warmer in the afternoon, partly cloudy in the evening, mostly clear Friday night.
• Sunny Saturday then clear Saturday night.
• lows 57-54 warming to 57 Saturday night highs 72-86.
• Mostly sunny Sunday and Monday, mostly clear at night.
• Sunny Tuesday, mostly clear at night.
• Mostly sunny Wednesday.
• highs near 88-90 lows near 60. (seasonal averages high 82 low 54)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with isolated coastal showers this evening while isolated evening thunderstorms inland, a (40%) chance of showers late tonight (under 0.10 in. of rain possible, more in storms).
• Mostly cloudy with a (30%) chance of coastal showers and a slight (20%) chance of thunderstorms Thursday while a good (50%) chance of showers and a slight (20%) chance of thunderstorms inland in the AM and showers likely (60%) with a slight (20%) chance of thunderstorms in the afternoon (under  in. of rain possible, more in storms), partly cloudy with a (30%) chance of coastal showers in the evening while a (40%) chance of evening inland showers and a slight (20%) chance of thunderstorms,  a slight (20%) chance of coastal showers while partly cloudy inland late Thursday night (under 0.10 in. or rain possible).
• Mostly cloudy Friday with a slight (20%) chance of AM showers, partly cloudy in the afternoon and evening, mostly clear late at night.
• Mostly sunny Saturday, mostly clear at night.
• lows near 56 highs 67-70.
• Mostly sunny Sunday, mostly clear at night.
• Partly cloudy Monday, mostly clear at night.
• Mostly sunny Tuesday and Wednesday, mostly clear Tuesday night.
• highs near 70 lows 56-58. (seasonal averages high 66 low 52)

________________

Forecast for the Cascades of Lane County:

• Mostly cloudy with a scattered showers likely (60%)and thunderstorms this evening, showers and scattered thunderstorms late tonight (0.25 in. of rain possible, more in storms) and Thursday AM, mostly cloudy with good (50%) chance of showers and a slight (20%) chance of thunderstorms Thursday afternoon and evening (0.50 in. of rain possible, more in storms), partly cloudy with a slight (20%) chance of showers late Thursday night (0.10 in. of rain possible, more in storms).
• A mix of clouds and sun Friday with a slight (20%) chance of AM showers, just partly cloudy Friday night.
• Mostly sunny Saturday, then partly cloudy Saturday night.
• snow level above 8,000 ft. tonight through Friday, free air freezing level 12,000 ft. rising to 13,000 ft. late Friday night, 13,000 ft. rising to 14,000 ft. Saturday and Saturday night.
• lows 45-42 highs 57-67.
• Partly cloudy Sunday AM, then mostly sunny Sunday afternoon through Wednesday with mostly clear skies at night.
• free air freezing level 14,000 ft. Sunday, 14,000 ft. rising to 15,000 ft. Sunday night and Monday, 15,000 ft. falling to 14,000 ft. at night, 14,000 ft. rising to 15,000 ft Tuesday, 15,000 ft. rising to 16,000 ft. late Tuesday night, then 16,000 ft. falling to 14,000 ft. Wednesday.
• highs 68-73 lows 46-50.

________________

**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 Eugene Daily News.com.

________________