Check out my latest Eugene Daily News Weather Or Not Column It’s Just Not The Same, And That’s Too Bad.

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Here is my new weekly weather quiz question. The city of San Francisco, CA has it’s own “air conditioner” caused by upwelling. What is “upwelling” and how does it keep the area cool? 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.

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ADVISORIES:

• A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 8 AM WEDNESDAY FOR THE NORTH OREGON COAST, THE CENTRAL OREGON COAST, AND CENTRAL DOUGLAS COUNTY. A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 8 AM WEDNESDAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.

A Blue-Green Algae warning continues for Tenmile Lakes in Coos County, Fern Ridge Reservoir, Lost Creek Lake,  and  at Devils Lake. 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.
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An upper level low (Shaded “U” shape) is sliding past the Pacific Northwest while a high pressure ridge (shaded “Arch” shape) moves in bringing colder air and clear skies. A weak cold will come through midweek and should clear out just in time for Halloween Trick-or-Treaters to move about without getting wet. A frontal system will push in between Friday night and Saturday with the chance of rain returning.

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Your College Football Forecasts: (Preliminary)

Ducks have a bye week, no game this week.

Next game Thursday November 7th:

The Ducks vs Stanford at Stanford Stadium, Stanford California: Kickoff 6:00 PM- Too early for accurate forecast.

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Friday November 1st:

The Beavers vs USC at Reser Stadium: Kickoff 6:00 PM- Partly cloudy with the chance of rain increasing to 50% by the end of the game, temperature near 54 cooling into the 40s by the end of the game.

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

• Mostly clear with patchy fog and frost late tonight and early Wednesday AM, partly cloudy in the afternoon, cloudy with a slight (20%) chance of rain in the evening, a (30%) chance of rain late Wednesday night,
• Cloudy with a (40%) chance of AM rain, just a slight (20%) of showers Thursday afternoon (Halloween), then just mostly cloudy Thursday night,
• A mix of clouds and sun with a slight (20%) chance of rain Friday afternoon, mostly cloudy with a good (50%) chance of rain Friday night,
• lows 30-42 cooling to 39 Friday night highs 59-56.
• Rain Saturday, mostly cloudy with a good (50%) chance of showers at night,
• Cloudy with a good (50%) chance of showers Sunday, mostly cloudy with a good (50%) chance of showers Sunday night,
• Mostly cloudy with a good (50%) chance  of rain Monday, cloudy with a (40%) chance of rain Monday night,
• Then rain likely (60%) Tuesday.
• highs 53-48 warming to 52 Tuesday lows 39-42. (seasonal averages high 58 low 40)

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

• Clear tonight with patchy fog and frost late tonight,
• Sunny with patchy AM coastal fog while areas of frost and patchy fog Wednesday AM, partly cloudy in the afternoon, mostly cloudy with a slight (20%) chance of rain late Wednesday night,
• Cloudy with a (40%) chance of showers Thursday (Halloween), mostly cloudy in the evening, clearing late at night,
• Sunny Friday AM, partly cloudy in the afternoon, mostly cloudy with a good (50%) chance of evening rain, then rain likely (60%) late Friday night.
• lows 39-48 highs 55-58.
• Mostly cloudy with rain Saturday, a good (50%) chance of rain and colder at night,
• Cloudy with a (40%) chance of showers Sunday through Monday, cloudy with a good (50%) chance of showers at night,
• Then cloudy with a (40%) chance of rain Tuesday.
• highs 57-52 warming to 55 Tuesday lows 42-45. (seasonal averages high 59 low 45)

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Forecast for the Cascades of Lane County:

• Mostly clear tonight,
• Mostly sunny Wednesday AM, partly cloudy in the afternoon, mostly cloudy with a (40%) chance of rain late at night,
• Cloudy with a good (50%) chance of rain Thursday (Halloween), just mostly cloudy Thursday night, Partly cloudy with a slight (20%) chance of rain Friday afternoon, then mostly cloudy with a good (50%) chance of rain at night.
• free air freezing level 9,000 ft. tonight, snow level above 8,000 ft. Wednesday through Thursday, free air freezing level 11,000 ft. at night, snow level above 8,000 ft. Friday and Friday night.
• lows 25-32 highs 46-56.
• Mostly cloudy with rain and breezy Saturday, rain and snow showers likely (70%) at night, and Sunday,  then mostly cloudy with a good (50%) chance of rain and snow showers Sunday night,
• A mix of clouds and sun with good (50%) chance of rain and snow Monday, mostly cloudy with a (40%) chance of rain and snow Monday night,
• Then rain and snow likely (60%) Tuesday.
• snow level 6,000 ft. Saturday, 4,000 ft. at night, 3,500 ft. Sunday and Sunday night, 3,000 ft. Monday, 4,500 ft. Monday night, then 5,000 ft. Tuesday.
• highs 39-32 warming to 36 Tuesday lows 25-28.