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Precipitation in the south slopes of the Olympics Tuesday night into Wednesday could push the already running high Skokomish River over flood stage. * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northwest Washington, including the following county, Mason. * WHEN...From late Tuesday night through late Wednesday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Two to three inches of rain in the Olympics will force sharp rises on the Skokomish River with flooding possible. Relatively low snow levels may diminish the chance of flooding. - http://www.weather.gov/safety/flood

* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches in the valleys and 6 and 12 inches in the mountains. * WHERE...Kettle Falls, Bonners Ferry, Schweitzer Mountain Road, Northport, Colville, Flowery Trail Road, Athol, Sandpoint, Ione, Metaline, Metaline Falls, Springdale-Hunters Road, Priest River, Newport, Chewelah, Orin-Rice Road, Fruitland, Deer Park, Clark Fork, Eastport, and Tiger. * 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...Brewster, Boulder Creek Road, Tonasket, Highway 20 Wauconda Summit, Disautel Pass, Omak, Wauconda, Nespelem, Okanogan, Sherman Pass, Republic, Bridgeport, Chesaw Road, Oroville, and Inchelium. * 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...Conconully, Twisp, Winthrop, Methow, Mazama, and Loup Loup Pass. * 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...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...Stevens Pass, 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 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...Creston, Rockford, Worley, Potlatch, Cheney, Post Falls, Davenport, Coeur d'Alene, Downtown Spokane, Coulee City, Harrington, Genesee, Tekoa, La Crosse, Pullman, Hayden, Uniontown, Odessa, Moscow, Oakesdale, Colfax, Wilbur, Airway Heights, Grand Coulee, Fairfield, Spokane Valley, Ritzville, Rosalia, and Plummer. * 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 45 mph on the Waterville Plateau. * WHERE...Pangborn Airport, Badger Mountain Road, Chelan, Leavenworth, Cashmere, Mansfield, Number 2 Canyon, Plain, Waterville, Number 1 Canyon, Entiat, and Wenatchee. * WHEN...From 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Travel could be very difficult. Light snow will develop during the Tuesday evening and heavy snow will be possible by the Wednesday morning commute. Gusty winds could bring down tree branches and create blowing snow over the Waterville Plateau.

* WHAT...For the Winter Storm Warning above 2000 feet, heavy snow. Additional snow accumulations 3 to 6 inches. For the Winter Weather Advisory, wet snow expected. Total snow accumulations 8 to 14 inches. Highest amounts above 4000 feet. Winds gusting as high as 50 mph. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon. * WHEN...For the Winter Storm Warning, until 10 PM PST this evening. For the Winter Weather Advisory, from 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will begin around 2500 feet Tuesday afternoon and rise to around 4000 feet by late Tuesday evening. Highest accumulations expected above 4000 feet.

* WHAT...For the Winter Storm Warning above 2000 feet, heavy snow. Additional snow accumulations 3 to 6 inches. For the Winter Weather Advisory, wet snow expected. Total snow accumulations 8 to 14 inches. Highest amounts above 4000 feet. Winds gusting as high as 50 mph. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon. * WHEN...For the Winter Storm Warning, until 10 PM PST this evening. For the Winter Weather Advisory, from 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will begin around 2500 feet Tuesday afternoon and rise to around 4000 feet by late Tuesday evening. Highest accumulations expected above 4000 feet.

* WHAT...For the Winter Storm Warning above 2000 feet, heavy snow. Additional snow accumulations 3 to 6 inches. For the Winter Weather Advisory, wet snow expected. Total snow accumulations 8 to 14 inches. Highest amounts above 4000 feet. Winds gusting as high as 50 mph. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon. * WHEN...For the Winter Storm Warning, until 10 PM PST this evening. For the Winter Weather Advisory, from 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will begin around 2500 feet Tuesday afternoon and rise to around 4000 feet by late Tuesday evening. Highest accumulations expected above 4000 feet.

* WHAT...For the Winter Storm Warning above 2000 feet, heavy snow. Additional snow accumulations 3 to 6 inches. For the Winter Weather Advisory, wet snow expected. Total snow accumulations 8 to 14 inches. Highest amounts above 4000 feet. Winds gusting as high as 50 mph. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon. * WHEN...For the Winter Storm Warning, until 10 PM PST this evening. For the Winter Weather Advisory, from 4 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will begin around 2500 feet Tuesday afternoon and rise to around 4000 feet by late Tuesday evening. Highest accumulations expected above 4000 feet.

* WHAT...Heavy wet snow above 2000 feet. Additional snow accumulations 2 to 4 inches. * WHERE...Foothills of the Northern and Central Oregon Cascades. * WHEN...Until 10 PM PST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening commute.

* WHAT...Wet snow above 2000 feet. Additional snow accumulations up to two inches. * WHERE...North and Central Coast Range Mountains of Oregon. * WHEN...Until 10 PM PST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening commute.

...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...Significant snowfall with periods of heavy snowfall rates will combine with low visibility to create very 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...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...Significant snowfall with periods of heavy snowfall rates will combine with low visibility to create very difficult driving conditions. * 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...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...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. Gusty winds could bring down tree branches. * 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...South winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Greater Portland/Vancouver Metro, Central and Southern Willamette Valley, and Lower Columbia River and Cowlitz River Valleys. * WHEN...From 4 PM Tuesday to 4 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 winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...South Washington Coast. * WHEN...From 4 PM Tuesday to 4 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. * ADDITIONAL DETAILS...Strongest gusts expected on beaches and headlands.

* WHAT...South winds 25 to 40 mph with gusts up to 60 mph expected. * WHERE...North and Central Coast of Oregon. * WHEN...From 4 PM Tuesday to 4 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. * ADDITIONAL DETAILS...Stronger gusts to 70 mph are possible on beaches and headlands.