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...STRONG WINDS AND MODERATE TO HEAVY SNOW WILL CREATE TREACHEROUS CONDITIONS ACROSS THE MOUNTAINS TUESDAY EVENING THROUGH WEDNESDAY MORNING... .A strong offshore system will bring significant winds and snowfall to the mountains and slopes of the region. These will bring notably hazardous conditions, including periods of very low to whiteout visibilities, alongside accumulating snowfall. * WHAT...Wet snow expected. Total snow accumulations 2 to 4 inches, locally 6-8 across the higher terrain. Winds gusting as high as 35 mph. * WHERE...Kittitas Valley. * WHEN...From 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Periods of moderate and heavy snow will combine with low visibilities to create difficult driving conditions. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes.

...STRONG WINDS AND MODERATE TO HEAVY SNOW WILL CREATE TREACHEROUS CONDITIONS ACROSS THE MOUNTAINS TUESDAY EVENING THROUGH WEDNESDAY MORNING... .A strong offshore system will bring significant winds and snowfall to the mountains and slopes of the region. These will bring notably hazardous conditions, including periods of very low to whiteout visibilities, alongside accumulating snowfall. * WHAT...Blizzard conditions expected above 2000 feet. Total snow accumulations between 8 and 20 inches. Winds gusting as high as 60 mph. * WHERE...Upper Slopes of the Eastern Washington Cascades Crest. * WHEN...From 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening.

...STRONG WINDS AND MODERATE TO HEAVY SNOW WILL CREATE TREACHEROUS CONDITIONS ACROSS THE MOUNTAINS TUESDAY EVENING THROUGH WEDNESDAY MORNING... .A strong offshore system will bring significant winds and snowfall to the mountains and slopes of the region. These will bring notably hazardous conditions, including periods of very low to whiteout visibilities, alongside accumulating snowfall. * WHAT...Heavy snow expected. Total snow accumulations of 6 to 16 inches. Winds gusting as high as 40 mph. * WHERE...Lower Slopes of the Eastern Washington Cascades Crest. * WHEN...From 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Heavy snowfall and very low visibility will create extremely dangerous driving conditions. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Significantly lowered visibilities in stronger winds will be possible.

...STRONG WINDS AND MODERATE TO HEAVY SNOW WILL CREATE TREACHEROUS CONDITIONS ACROSS THE MOUNTAINS TUESDAY EVENING THROUGH WEDNESDAY MORNING... .A strong offshore system will bring significant winds and snowfall to the mountains and slopes of the region. These will bring notably hazardous conditions, including periods of very low to whiteout visibilities, alongside accumulating snowfall. * WHAT...Snow expected above 3500 feet. Total snow accumulations between 2 and 8 inches, locally 10+ across the peaks and crests. Winds gusting as high as 60 mph. * WHERE...East Slopes of the Oregon Cascades. * WHEN...From 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Periods of moderate and heavy snow will combine with low visibilities to create difficult driving conditions. Strong winds could cause extensive damage to trees and power lines. * ADDITIONAL DETAILS...Brief periods of near whiteout conditions may be possible with this system. Widespread blizzard level conditions should be limited to the peaks of the region.

* WHAT...Southeast winds 25 to 35 mph with gusts up to 50 mph expected. * WHERE...John Day Basin, Grande Ronde Valley, and Lower Columbia Basin of Oregon. * WHEN...From 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...South to southeast winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Foothills of the Blue Mountains of Oregon, North Central Oregon, and Central Oregon. * WHEN...From 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

* WHAT...Large waves and hazardous surf conditions. Breakers 20 to 25 feet. * WHERE...North and Central Coast of Oregon, and South Washington Coast. * WHEN...From 7 PM Tuesday to 4 PM PST Wednesday. * IMPACTS...Destructive waves may wash over beaches, jetties, and other structures unexpectedly. People can be swept off rocks and jetties and drown while observing high surf. Minor beach erosion may damage coastal properties and buildings. Higher than normal water run-up is expected on beaches and low- lying shoreline.

* WHAT...Large waves and hazardous surf conditions. Breakers 20 to 25 feet. * WHERE...North and Central Coast of Oregon, and South Washington Coast. * WHEN...From 7 PM Tuesday to 4 PM PST Wednesday. * IMPACTS...Destructive waves may wash over beaches, jetties, and other structures unexpectedly. People can be swept off rocks and jetties and drown while observing high surf. Minor beach erosion may damage coastal properties and buildings. Higher than normal water run-up is expected on beaches and low- lying shoreline.

* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches in the valleys and 6 and 12 inches in the mountains. * WHERE...Springdale-Hunters Road, Tiger, Schweitzer Mountain Road, Sandpoint, Kettle Falls, Metaline, Metaline Falls, Orin-Rice Road, Priest River, Flowery Trail Road, Ione, Eastport, Athol, Chewelah, Deer Park, Fruitland, Bonners Ferry, Colville, Newport, Clark Fork, and Northport. * WHEN...From midnight Tuesday Night to 10 PM PST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday morning and evening commutes.

* WHAT...Heavy snow. Total snow accumulations between 4 and 8 inches in the valleys and 8 and 13 inches in the mountains. Winds could gust as high as 30 mph. * WHERE...Republic, Oroville, Omak, Disautel Pass, Wauconda, Bridgeport, Sherman Pass, Chesaw Road, Nespelem, Boulder Creek Road, Okanogan, Tonasket, Brewster, Inchelium, and Highway 20 Wauconda Summit. * WHEN...From 10 PM Tuesday to 4 PM PST Wednesday. * IMPACTS...Travel could be very difficult. Winter driving conditions could impact the Wednesday morning and evening commute. * ADDITIONAL DETAILS...Snowfall rates of 1 inch per hour will be possible at times.

* WHAT...Heavy snow expected. Total snow accumulations between 7 to 12 inches in the valleys and 12 and 20 inches in the mountains. Winds could gust as high as 50 mph on the ridgetops. * WHERE...Mazama, Methow, Loup Loup Pass, Conconully, Twisp, and Winthrop. * WHEN...From 4 PM Tuesday to 4 PM PST Wednesday. * IMPACTS...Travel could be very difficult. Blowing snow could significantly reduce visibility in the mountains. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. Strong winds could cause damage to trees and power lines. * ADDITIONAL DETAILS...Snowfall rates of 1 to 2 inches per hour will be possible at times.

* WHAT...Snow expected. For areas along and north of I-90, total snow accumulations between 2 and 4 inches. For areas south of I-90, total snow accumulations between 1 and 3 inches. * WHERE...Cheney, Davenport, Tekoa, Grand Coulee, Moscow, Harrington, Oakesdale, Wilbur, Odessa, Post Falls, Coeur d'Alene, Creston, Airway Heights, Pullman, Coulee City, Hayden, Ritzville, Downtown Spokane, Spokane Valley, Colfax, La Crosse, Potlatch, Worley, Fairfield, Rosalia, Uniontown, Rockford, Plummer, and Genesee. * WHEN...From 10 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Plan on slippery road conditions. Winter driving conditions could impact the Wednesday morning commute.

* WHAT...Heavy snow expected. Total snow accumulations between 6 and 12 inches. Winds could gust as high as 40 mph on the Waterville Plateau. * WHERE...Badger Mountain Road, Wenatchee, Waterville, Entiat, Leavenworth, Chelan, Number 2 Canyon, Number 1 Canyon, Plain, Mansfield, Pangborn Airport, and Cashmere. * WHEN...From 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Travel could be very difficult. Light snow will develop during the Tuesday evening commute and heavy snow will be possible by the Wednesday morning commute. Gusty winds could bring down tree branches and result in blowing snow over the Waterville Plateau.

* WHAT...Blizzard conditions expected for elevations above 2500 feet. Total snow accumulations between 8 and 16 inches. Winds gusting as high as 50 mph for portions of US 2 from Nason Creek to Stevens Pass. * WHERE...Stehekin, Holden Village, and Stehekin * WHEN...From 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Travel could be very difficult. Strong winds could cause extensive damage to trees and power lines. * ADDITIONAL DETAILS...Snowfall rates of 1 to 2 inches per hour will be possible at times.

* WHAT...Snow. Additional snow accumulations of 3 and 10 inches for tonight through Tuesday afternoon. Snow will increase again later Tuesday afternoon. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon. * WHEN...Until 10 AM PST Wednesday. * IMPACTS...Travel could be difficult at times.

* WHAT...Snow. Additional snow accumulations of 3 and 10 inches for tonight through Tuesday afternoon. Snow will increase again later Tuesday afternoon. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon. * WHEN...Until 10 AM PST Wednesday. * IMPACTS...Travel could be difficult at times.

* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches in the valleys and 6 and 12 inches in the mountains. * WHERE...Orin-Rice Road, Flowery Trail Road, Colville, Tiger, Deer Park, Bonners Ferry, Chewelah, Springdale-Hunters Road, Eastport, Clark Fork, Priest River, Schweitzer Mountain Road, Metaline Falls, Metaline, Newport, Fruitland, Kettle Falls, Sandpoint, Ione, Athol, and Northport. * WHEN...From midnight Tuesday Night to 10 PM PST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday morning and evening commutes.

* WHAT...Heavy snow. Total snow accumulations between 4 and 8 inches in the valleys and 8 and 13 inches in the mountains. Winds could gust as high as 30 mph. * WHERE...Boulder Creek Road, Okanogan, Wauconda, Bridgeport, Omak, Nespelem, Sherman Pass, Disautel Pass, Inchelium, Highway 20 Wauconda Summit, Tonasket, Brewster, Republic, Chesaw Road, and Oroville. * WHEN...From 10 PM Tuesday to 4 PM PST Wednesday. * IMPACTS...Travel could be very difficult. Winter driving conditions could impact the Wednesday morning and evening commute. * ADDITIONAL DETAILS...Snowfall rates of 1 inch per hour will be possible at times.

* WHAT...Heavy snow expected. Total snow accumulations between 7 to 12 inches in the valleys and 12 and 20 inches in the mountains. Winds could gust as high as 50 mph on the ridgetops. * WHERE...Loup Loup Pass, Twisp, Winthrop, Mazama, Methow, and Conconully. * WHEN...From 4 PM Tuesday to 4 PM PST Wednesday. * IMPACTS...Travel could be very difficult. Blowing snow could significantly reduce visibility in the mountains. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. Strong winds could cause damage to trees and power lines. * ADDITIONAL DETAILS...Snowfall rates of 1 to 2 inches per hour will be possible at times.

* WHAT...Snow expected. For areas along and north of I-90, total snow accumulations between 2 and 4 inches. For areas south of I-90, total snow accumulations between 1 and 3 inches. * WHERE...Downtown Spokane, Fairfield, Plummer, Worley, Coeur d'Alene, Oakesdale, Rosalia, Creston, Colfax, Uniontown, Spokane Valley, Post Falls, Pullman, Coulee City, Wilbur, Tekoa, Ritzville, Grand Coulee, Hayden, Cheney, Moscow, Harrington, Airway Heights, Rockford, Odessa, La Crosse, Genesee, Davenport, and Potlatch. * WHEN...From 10 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Plan on slippery road conditions. Winter driving conditions could impact the Wednesday morning commute.