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Here is my new weekly weather quiz question. Define “veering winds.” 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 FREEZE WARNING IS IN EFFECT FROM 11 PM TONIGHT UNTIL 9 AM THURSDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A FREEZE WATCH IS IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WINTER STORM WATCH IS IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY EVENING ABOVE 500 FT. FOR THE  SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST,  CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
• A Blue-Green Algae warning  has been cancelled for Tenmile Lakes in Coos County, but continues for Fern Ridge Reservoir, Lost Creek Lake, and Willow Creek Reservoir (NE Oregon). 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 high pressure ridge (Shaded “Arch” shape) is drawing much colder air down to the Pacific Northwest. A frontal system pushed through the West and continues to bring much colder air our way while a trough of  (Shaded “U” shape) slides to the east sending snow-producing moisture up at us from the south. There will be some snow, mainly on Friday, but so far it looks like the Valley will see from a light dusting to possibly an inch or so of snow.

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

• Clear and colder tonight,
• Mostly sunny Thursday AM, partly cloudy in the afternoon, increasing clouds with snow developing late Thursday night (1.00 in. of snow possible),
• Cloudy with snow Friday AM, snow tapering off and ending in the afternoon (1-2 in. of snow possible, heaviest south of Eugene), clearing and cold Friday night,
• Mostly sunny Saturday, partly cloudy at night.
• lows 14-23 cooling to 9 Friday night highs 35-28.
• Partly cloudy Sunday through Monday, mostly cloudy with a slight (20%) chance of freezing rain and snow Monday night,
• Cloudy with a good (50%) chance of rain Tuesday and Tuesday night,
• Then rain likely (60%) Wednesday.
• highs 32-42 lows 15-33. (seasonal averages high 47 low 35).

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

• Clear tonight,
• Sunny Thursday, partly cloudy in the evening with a slight (20%) chance of coastal rain while a slight (20%) chance of inland rain and snow, cloudy with rain and snow late Thursday night,  while a good (50%) chance of coastal rain in the evening and rain late Thursday night (snow level 900 ft. falling to 200 ft. late at night, 1-2 in. of snow possible),
• Rain and snow Friday (snow level 200 ft.), mostly cloudy in the evening, clearing and colder Friday night,
• Then partly cloudy Saturday and Saturday night.
• lows 25-32 cooling to 20 Saturday night highs 42-40.
• Partly cloudy Sunday through Monday, mostly cloudy with a slight (20%) chance of rain at night,
• Mostly cloudy with a (30%) chance of AM rain and snow, a (40%) chance of rain Monday afternoon and Monday night,
• Mostly cloudy with a good (50%) chance of rain Tuesday and Tuesday night,
• Then cloudy and breezy with a (40%) chance of rain Wednesday.
• highs 44-53 lows 26-37. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County:

• Clear tonight,
• Mostly sunny Thursday, mostly cloudy with snow developing late Thursday night (1-2 in. of snow possible),
• Mostly cloudy with snow Friday, decreasing late in the day, a good (50%) chance of evening snow showers, partly cloudy with a slight (20%) chance of snow flurries late Friday night,
• Then partly cloudy Saturday and Saturday night.
• free air freezing level at the surface tonight and Thursday, snow level at the surface Thursday night through Friday night, then free air freezing level at the surface Saturday and Saturday night.
• lows 5-11 cooling to 5 Saturday night highs 23-17.
• Partly cloudy Sunday through Monday, more clouds with a slight (20%) chance of snow Monday night,
• Cloudy with a good (50%) chance of rain or snow Tuesday and Tuesday night,
• Then mostly cloudy with rain or snow likely (60%) Wednesday.
• free air freezing level at the surface Sunday through Monday, then snow level at the surface Monday night, 2,500 ft. Tuesday,  3,000 ft. Tuesday night, then 3,500 ft. Wednesday.
• highs 20-33 lows 10-30.