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North Cascades

 

 

Weather Alert
Winter Storm Warning

*NOAA Issue Date: 12/7/2016 09:26:00 PM Significant winter weather expected over much of southwest Washington and northwest Oregon Thursday and Thursday night ... . An unusually strong winter storm will bring mixed precipitation across much of southwest Washington and northwest Oregon that will have significant impacts spreading north over the area Thursday ... Continuing in the northern areas into Thursday night and into the Columbia river gorge into Friday. This is the strongest storm of this type in quite a while. ... Winter Storm Warning remains in effect from 7 AM Thursday to 4 AM PST Friday for the north Oregon Cascades ... A Winter Storm Warning for heavy snow and ice remains in effect from 7 AM Thursday to 4 AM PST Friday. * Timing Snow will spread north across the area Thursday morning ... Changing to sleet or freezing rain during the afternoon except near the Cascade crest and passes. Snow will persist near the crest and passes into the evening hours. Precipitation should change to rain below 4500 feet by sunrise Friday. * Snow accumulations ... 8 to 16 inches ... Heaviest near Mount Hood. * Ice accumulations Up to one quarter inch ... Mainly in protected Cascade valleys away from the crest. * Snow levels Snow levels will rise to around 4500 feet Thursday afternoon and evening. * Impacts Travel will be very difficult as roads become snow covered and icy ... Especially across the passes. Precautionary/preparedness actions... A winter Storm Warning means significant amounts of snow ... Sleet ... And ice are expected or occurring. Strong winds are also possible. This will make travel very hazardous or impossible.

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Northwest Coast Range, Lower Columbia, Portland Metro, North Cascade Foothills, WA-Willapa Hills, WA-Lower Columbia & I-5 Cowlitz Co., WA-Vancouver Area, WA-South Cascade Foothills

 

 

Weather Alert
Winter Storm Warning

*NOAA Issue Date: 12/7/2016 09:26:00 PM Significant winter weather expected over much of southwest Washington and northwest Oregon Thursday and Thursday night ... . An unusually strong winter storm will bring mixed precipitation across much of southwest Washington and northwest Oregon that will have significant impacts spreading north over the area Thursday ... Continuing in the northern areas into Thursday night and into the Columbia river gorge into Friday. This is the strongest storm of this type in quite a while. ... Winter Storm Warning remains in effect from 8 AM Thursday to midnight PST Thursday night for the greater Portland and Vancouver metro area ... Lower Columbia ... Interstate 5 corridor in Cowlitz county ... Northwest Oregon coast range ... Northern Oregon Cascade foothills ... Willapa hills ... And south Washington Cascade foothills ... A winter Storm Warning for snow ... Blowing snow ... And ice remains in effect from 8 AM Thursday to midnight PST Thursday night. * Timing Snow will begin mid to late morning on Thursday ... Continue through much of the day Thursday in the inland areas but start to change to freezing rain in the coastal mountains in the afternoon and in the inland areas around 4 PM. Freezing rain will then continue inland until midnight ... Especially near the Gorge. * Snow accumulations Generally 2 to 4 inches. However ... Areas near the Gorge ... The coast range ... And western Tualatin Valley could stay snow long enough for accumulations to reach 4 to 7 inches. * Ice accumulations One tenth to one quarter inch ... Heaviest near the Gorge. * Wind Strong east winds locally gusting 40 to 50 MPH across the eastern Portland and Vancouver metro area will lead to areas of blowing snow ... As well as cold wind chills. * Impacts Travel will be difficult ... Especially from late Thursday morning through Thursday evening. Some Power outages are likely across the area due to the snow and ice accumulation combined with the wind. Precautionary/preparedness actions... A winter Storm Warning means significant amounts of snow ... Sleet ... And ice are expected or occurring. Strong winds are also possible. This will make travel very hazardous or impossible.

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North Coast, WA-South Coast

 

 

Weather Alert
Winter Storm Warning

*NOAA Issue Date: 12/7/2016 09:26:00 PM Significant winter weather expected over much of southwest Washington and northwest Oregon Thursday and Thursday night ... . An unusually strong winter storm will bring mixed precipitation across much of southwest Washington and northwest Oregon that will have significant impacts spreading north over the area Thursday ... Continuing in the northern areas into Thursday night and into the Columbia river gorge into Friday. This is the strongest storm of this type in quite a while. ... Winter Storm Warning remains in effect from 8 AM to 8 PM PST Thursday for the north Oregon coast and south Washington coast ... A Winter Storm Warning for snow and ice remains in effect from 8 AM to 8 PM PST Thursday. * Timing A mixture of snow ... Sleet and freezing rain is expected to begin after sunrise Thursday and continue into the early evening Thursday. The bulk of the precipitation will be freezing rain. The precipitation may change to all rain by 4 PM in the south but near and north of Astoria may take until mid evening Thursday. * Snow accumulations Snow and sleet accumulations are expected to be relatively light ... With the best chance of an inch of snow in the northern sections toward Astoria and Long Beach. * Ice accumulations Up to a quarter inch of ice is possible. * Impacts Travel will be difficult as roads become icy. Some Power disruptions are possible. A winter Storm Warning means significant amounts of snow ... Sleet ... And ice are expected or occurring. Strong winds are also possible. This will make travel very hazardous or impossible. &&

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Lane Co. Cascades

 

 

Weather Alert
Winter Storm Warning

*NOAA Issue Date: 12/7/2016 09:26:00 PM Significant winter weather expected over much of southwest Washington and northwest Oregon Thursday and Thursday night ... . An unusually strong winter storm will bring mixed precipitation across much of southwest Washington and northwest Oregon that will have significant impacts spreading north over the area Thursday ... Continuing in the northern areas into Thursday night and into the Columbia river gorge into Friday. This is the strongest storm of this type in quite a while. ... Winter Weather Advisory has been upgraded to a Winter Storm Warning ... Which is in effect from 4 AM to 6 PM PST Thursday for the Lane county Cascades ... The National Weather Service in Portland has upgraded the Winter Weather Advisory to a Winter Storm Warning for heavy snow and ice for the Lane county Cascades ... Which is in effect from 4 AM to 6 PM PST Thursday. * Timing Snow will begin before sunrise Thursday ... Changing to sleet or freezing rain by midday except near the Cascade crest and passes. Snow will persist near the crest and passes through afternoon. All precipitation should change to rain by Thursday evening. * Snow accumulations ... 8 to 14 inches near the crest and passes. Lesser accumulations elsewhere ... 3 to 7 inches. * Ice accumulations Generally one to two tenths of an inch of ice ... Though some protected Cascade valleys and passes may see as much as one half inch of ice. * Snow levels Rising to 6000 feet or higher by late Thursday afternoon. * Impacts Travel will become very difficult Thursday as roads become snow covered or icy ... Especially across Willamette pass. Precautionary/preparedness actions... A winter Storm Warning means significant amounts of snow ... Sleet ... And ice are expected or occurring. Strong winds are also possible. This will make travel very hazardous or impossible.

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Central Willamette Valley

 

 

Weather Alert
Winter Storm Warning

*NOAA Issue Date: 12/7/2016 09:26:00 PM Significant winter weather expected over much of southwest Washington and northwest Oregon Thursday and Thursday night ... . An unusually strong winter storm will bring mixed precipitation across much of southwest Washington and northwest Oregon that will have significant impacts spreading north over the area Thursday ... Continuing in the northern areas into Thursday night and into the Columbia river gorge into Friday. This is the strongest storm of this type in quite a while. ... Winter Storm Warning remains in effect from 6 AM to 4 PM PST Thursday for the central Willamette Valley including the Salem metro area ... A winter Storm Warning for snow and ice remains in effect from 6 AM to 4 PM PST Thursday. * Timing Beginning around sunrise Thursday and continuing through most of Thursday afternoon. Precipitation should turn to mainly freezing rain between 10 AM and noon. * Snow accumulations Generally 1 to 2 inches ... Though accumulations of 2 to 5 inches will be possible for locations closer to the coast range such as Newberg ... Dallas ... And McMinnville. * Ice accumulations Up to a quarter inch of ice accumulation is possible later Thursday morning and Thursday afternoon. * Impacts Travel will be difficult on Thursday. Some Power disruptions are possible. Precautionary/preparedness actions... A winter Storm Warning means significant amounts of snow ... Sleet ... And ice are expected or occurring. Strong winds are also possible. This will make travel very hazardous or impossible.

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West Coast Range, South Willamette Valley, Lane Co. Cascade Foothills

 

 

Weather Alert
Winter Storm Warning

*NOAA Issue Date: 12/7/2016 09:26:00 PM Significant winter weather expected over much of southwest Washington and northwest Oregon Thursday and Thursday night ... . An unusually strong winter storm will bring mixed precipitation across much of southwest Washington and northwest Oregon that will have significant impacts spreading north over the area Thursday ... Continuing in the northern areas into Thursday night and into the Columbia river gorge into Friday. This is the strongest storm of this type in quite a while. ... Winter Storm Warning remains in effect from 4 AM to 2 PM PST Thursday for the south Willamette Valley including the Eugene metro area ... The central coast range of Oregon ... And the Cascade foothills in Lane county ... A winter Storm Warning for snow and ice remains in effect from 4 AM to 2 PM PST Thursday. * Timing Beginning just before sunrise Thursday morning and continuing into mid afternoon Thursday. Precipitation should mainly be freezing rain by around 10 AM. * Snow accumulations ... 1 to 3 inches of snow is possible Thursday morning in the foothills and coast range ... Light accumulations of a trace to less than an inch in the south Willamette Valley. * Ice accumulations Up to one quarter of an inch of ice is possible Thursday morning ... Perhaps lasting into the early afternoon. * Impacts Travel will be difficult as some brief snow accumulations change to sleet and then freezing rain and roads become snow and ice covered and slick. Some Power disruptions are possible. Precautionary/preparedness actions... A winter Storm Warning means significant amounts of snow ... Sleet ... And ice are expected or occurring. Strong winds are also possible. This will make travel very hazardous or impossible.

Click here for NOAA web site

East Columbia Gorge, WA-East Columbia Gorge

 

 

Weather Alert
Winter Storm Warning

*NOAA Issue Date: 12/7/2016 02:57:00 PM Widespread snow Thursday through Friday ... . A warm front off the Pacific will spread moisture east of the Cascades on Thursday. This system will bring widespread snow Thursday through Friday. On Thursday night and Friday ... The warm front will override the cold air at the surface and bring areas of sleet and freezing rain to the lower elevations. Significant snow can be expected in some areas of eastern Washington and eastern Oregon. ... Winter Storm Warning in effect from 10 AM to 7 PM PST Thursday ... The National Weather Service in Pendleton has issued a Winter Storm Warning for heavy snow ... Which is in effect from 10 AM to 7 PM PST Thursday. The Winter Storm Watch is no longer in effect. * Locations Arlington ... The Dalles ... White Salmon. * Snow level Valley floor. * Snow accumulations ... 5 to 9 inches. * Timing Snow will develop Thursday morning then increase in intensity Thursday afternoon. There is a slight chance of sleet and freezing rain late Thursday. * Impacts Area roadways will be snow covered and slick. Driving on interstate 84 and highway 14 will be hazardous with poor visibility and periods of moderate to heavy snow. * Winds East 5 to 15 MPH. * Hazard elevation All elevations. * Web page: for a detailed view of the hazard area visit http://www.wrh.noaa.gov/map/?wfo=pdt. Precautionary/preparedness actions... A winter Storm Warning for heavy snow means severe winter weather conditions are expected or occurring. Significant amounts of snow are forecast that will make travel dangerous. Only travel in an emergency. If you must travel ... Keep an extra flashlight ... Food ... And water in your vehicle in case of an emergency.

Click here for NOAA web site

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