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Today is your last chance to win this week. Here is my 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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Record low 18 degrees Wednesday in Eugene and we broke the record again Thursday morning (14 degrees).

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Advisories:

• A WIND CHILL WARNING IS IN EFFECT FROM 7 PM THIS EVENING UNTIL NOON SATURDAY FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• A WIND ADVISORY IS IN EFFECT UNTIL 6 AM SATURDAY FOR THE GREATER PORTLAND/VANCOUVER AREA.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, AND CENTRAL DOUGLAS COUNTY.
• A WINTER STORM WARNING IS IN EFFECT  UNTIL 4 AM SATURDAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE  SOUTH CENTRAL OREGON CASCADES.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4AM SATURDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE 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 surface low and frontal system have been moving southward along the Oregon coast producing our snowstorm while a trough of  (Shaded “U” shape) slides to the south and is the generating force for this snow event. Please drive slower and don’t make any sudden moves as your vehicle could start to skid. If you don’t really have to get out on the streets with your vehicle it is suggested that you stay put.

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

• Mostly cloudy with evening snow likely (60%), cold with a slight (20%) chance of snow showers late tonight,
• A mix of clouds and sun with patchy AM freezing fog, mostly sunny and cold Saturday afternoon, clear at night,
• Mostly sunny Sunday AM, partly cloudy in the afternoon and at night,
• Partly cloudy Monday, mostly cloudy with a slight (20%) chance of rain, freezing rain, and snow at night
• lows 12-5 warming to 10 Monday night highs 22-30.
• Cloudy with a (40%) chance of rain, freezing rain, and snow (snow level 1,500 ft.) Tuesday, mostly cloudy with a (30%) chance of rain Tuesday night, cloudy with a good (50%) chance of rain Wednesday, rain likely (70%) Wednesday night and Thursday, showers likely (60%) at night,
• Then mostly cloudy with showers likely (60%) Friday.
• highs 36-45 lows 33-38. (seasonal averages high 46 low 34).

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

• Cloudy this evening with a good (50%) chance of coastal rain and snow while a (40%) chance of inland rain and snow this evening, a slight (20%) chance of snow showers late tonight (snow level 100 ft, 1.00 in. of snow possible),
• Sunny Saturday, mostly clear Saturday night,
• Sunny Sunday AM, partly cloudy in the afternoon and Sunday night,
• Sunny Monday, then partly cloudy at night.
• lows 23-20 warming to 30 Monday night highs 34-46.
• Mostly cloudy with a slight (20%) chance of showers Tuesday, cloudy with a slight (20%) chance of showers Tuesday night,
• Mostly cloudy with a slight (20%) chance of showers Wednesday, cloudy with a (40%) chance of showers at night,
• Showers likely (60%) Thursday and Thursday night,
• Then mostly cloudy with rain likely (60%) Friday.
• highs 48-52 lows 38-43. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County:

• Mostly cloudy with snow showers this evening, colder with a  (30%) chance of snow showers late tonight (2 in. of snow possible),
• Mostly cloudy with a slight (20%) chance of snow showers in the AM, partly cloudy Saturday afternoon, mostly clear Saturday night,
• Mostly sunny Sunday AM, partly cloudy and a bit warmer in the afternoon, partly cloudy Sunday night,
• snow level at the surface tonight, then free air freezing level at the surface Saturday through Sunday night,
• Partly cloudy Monday  and in the evening, mostly cloudy with a slight (20%) chance of snow Monday night.
• lows -3-20 highs 14-25.
• Cloudy with a slight (20%) chance of snow Tuesday, mostly cloudy with a slight (20%) chance of rain and snow Tuesday night,
• Cloudy with a (40%) chance of rain and snow Wednesday, rain and snow likely (70%) Wednesday night and Thursday, rain and snow showers likely (60%) at night,
• Then cloudy with a good (50%) chance of rain and snow showers Friday.
• snow level at the surface Tuesday, 2,500 ft. rising to 4,000 ft. late Tuesday night, 3,000 ft. Wednesday, 4,000 ft. Wednesday night, 4,500 ft. Thursday, 4,000 ft. at night, then 3,500 ft. Friday.
• highs 33-36 lows 29-32 cooling to 26 Thursday night.