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* WHAT...Heavy snow possible. Total snow accumulations between 6 and 10 inches possible. Winds could gust as high as 30 mph south of Omak. * WHERE...Bridgeport, Republic, Oroville, Brewster, Chesaw Road, Inchelium, Wauconda, Disautel Pass, Sherman Pass, Okanogan, Omak, Tonasket, Highway 20 Wauconda Summit, Boulder Creek Road, and Nespelem. * WHEN...From Tuesday evening through Wednesday evening. * IMPACTS...Travel could be very difficult. Winter travel conditions are expected during the Wednesday morning and evening commutes. * ADDITIONAL DETAILS...Snowfall rates of 1 inch per hour will be possible at times.

* WHAT...Heavy snow possible. Total snow accumulations between 4 and 10 inches possible with local amounts near a foot. Winds could gust as high as 45 mph on the Waterville Plateau. * WHERE...Number 2 Canyon, Chelan, Badger Mountain Road, Entiat, Pangborn Airport, Wenatchee, Waterville, Cashmere, Mansfield, and Number 1 Canyon. * WHEN...From Tuesday afternoon through Wednesday evening. * 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...Heavy snow possible. Total snow accumulations between 10 to 15 inches in the valleys and 12 and 20 inches in the mountains possible. Winds could gust as high as 50 mph on the ridgetops. * WHERE...Conconully, Loup Loup Pass, Leavenworth, Winthrop, Plain, Twisp, Mazama, and Methow. * WHEN...From Tuesday afternoon through Wednesday evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. Strong winds could cause extensive damage to trees and power lines.

* WHAT...For the Winter Storm Warning, heavy snow. Additional snow accumulations up to 3 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 10 and 20 inches possible. Winds could gust as high as 50 mph on the ridgetops and through the passes. * WHERE...Stehekin, Stevens Pass, and Holden Village. * WHEN...For the Winter Storm Warning, until 4 PM PST this afternoon. For the Winter Storm Watch, from Tuesday afternoon through Wednesday evening. * IMPACTS...Travel could be very difficult. Be sure to have a vehicle emergency supply kit when traveling. Areas of blowing snow could significantly reduce visibility. 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...For the Winter Storm Warning, heavy snow. Additional snow accumulations up to 3 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 10 and 20 inches possible. Winds could gust as high as 50 mph on the ridgetops and through the passes. * WHERE...Stehekin, Stevens Pass, and Holden Village. * WHEN...For the Winter Storm Warning, until 4 PM PST this afternoon. For the Winter Storm Watch, from Tuesday afternoon through Wednesday evening. * IMPACTS...Travel could be very difficult. Be sure to have a vehicle emergency supply kit when traveling. Areas of blowing snow could significantly reduce visibility. 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...Southeast winds 25 to 35 mph with gusts up to 60 mph possible. * WHERE...South Washington Coast. * WHEN...From Tuesday afternoon through late Tuesday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Strongest winds near the beaches and headlands.

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph possible. * WHERE...North and Central Coast of Oregon. * WHEN...From Tuesday afternoon through late Tuesday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Strongest winds near the beaches and headlands.

* WHAT...South to southeast winds 30 to 35 mph with gusts up to 60 mph possible. * WHERE...Foothills of the Blue Mountains of Oregon, North Central Oregon, and Central Oregon. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles.

* WHAT...Minor coastal flooding expected. Inundation of around 2 feet above ground level is possible along shorelines and low- lying coastal areas. * WHERE...San Juan County, Western Whatcom County, Southwest Interior, Western Skagit County, Everett and Vicinity, Tacoma Area, Admiralty Inlet Area, Hood Canal Area, Seattle and Vicinity and Bremerton and Vicinity zones. * WHEN...From 5 AM to 10 AM PST today. * IMPACTS...Minor coastal flooding due to tidal overflow is expected around high tide. This may lead to flooding of parking lots, parks, and roads, with only isolated road closures expected.

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 Wednesday afternoon. * 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. - http://www.weather.gov/safety/flood

...WINTER WEATHER HIGHLIGHTS... .An upper level trough will continue passing over the region today providing a cool moist westerly flow into the Cascades. This will result in continuing significant snow accumulations along the crest of the Cascades. * WHAT...Heavy snow above 2500 ft with an additional snow accumulations of 3 and 6 inches mainly impacting the passes. Higher accumulations are likely in the higher elevations along the crest of the Cascades. * WHERE...Upper Slopes of the Eastern Washington Cascades Crest. * WHEN...Until 10 PM PST this evening. * IMPACTS...Travel could be difficult due to periods of moderate to heavy snow.

Snow showers continuing in the Cascades today. Snow accumulations will lessen this afternoon and evening. * WHAT...Snow at or above elevations greater than 2000 ft. Additional snow accumulations between 2 and 4 inches. * WHERE...West Slopes North Cascades and Passes, West Slopes North Central Cascades and Passes, and West Slopes South Central Cascades and Passes. * WHEN...Until 10 AM PST this morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions.

...WINTER WEATHER HIGHLIGHTS... .An upper level trough will continue passing over the region today providing a cool moist westerly flow into the Cascades. This will result in continuing significant snow accumulations along the crest of the Cascades. * WHAT...Heavy snow mainly along he Cascade crest and passes where an additional snow accumulations of 4 and 8 inches will be possible through this evening. Lighter amounts of 1 to 3 inches are expected in the lower elevations impacting Sisters, Camp Sherman and the Sunriver area. * WHERE...East Slopes of the Oregon Cascades. * WHEN...Until 10 PM PST this evening. * IMPACTS...Periods of moderate and heavy snow will combine with low visibilities to create difficult driving conditions.

* WHAT...East to southeast winds 25 to 40 mph with gusts up to 65 mph possible. * WHERE...Central Coast, North Coast, Western Strait of Juan De Fuca, Bellevue and Vicinity, and East Puget Sound Lowlands. * WHEN...From Tuesday evening through late Tuesday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles.

* WHAT...Large breaking waves of 20 to 23 feet. * WHERE...The beaches and shorelines of Douglas, Coos, and Curry counties. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Large breaking waves will create hazardous conditions along and within the surf zone, and could inundate beaches and low lying shorelines. Beach erosion is possible, and exposed infrastructure may be damaged. * ADDITIONAL DETAILS...Another very strong storm will bring storm force south winds Tuesday into Wednesday. This is likely to bring another round of very high surf, especially to south- facing beaches and ports, like Port Orford and Brookings. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

* WHAT...For the Winter Storm Warning, heavy snow. Additional snow accumulations between 4 and 8 inches for the Siskiyou Mountains and the Southern Oregon Cascades from Lake of the Woods southward. North of Lake of the Woods, 8 to 14 inches possible. Winds gusting as high as 40 mph. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 9 and 15 inches possible with locally higher amounts near 24 inches. Winds could gust as high as 70 mph. * WHERE...The Southern Oregon Cascades and Siskiyou Mountains. This includes portions of highways 58, 230, 138, 62, 140, and 66. It also includes the areas of Willamette Pass, Crater Lake, Diamond Lake, Union Creek, and Lake of the Woods. For the Winter Storm Watch, above 4,000 feet. * WHEN...For the Winter Storm Warning, until 10 PM PST this evening. For the Winter Storm Watch, from Tuesday afternoon through Wednesday evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Very strong winds could cause extensive damage to trees and power lines.

* WHAT...For the Winter Storm Warning, heavy snow. Additional snow accumulations between 4 and 8 inches for the Siskiyou Mountains and the Southern Oregon Cascades from Lake of the Woods southward. North of Lake of the Woods, 8 to 14 inches possible. Winds gusting as high as 40 mph. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 9 and 15 inches possible with locally higher amounts near 24 inches. Winds could gust as high as 70 mph. * WHERE...The Southern Oregon Cascades and Siskiyou Mountains. This includes portions of highways 58, 230, 138, 62, 140, and 66. It also includes the areas of Willamette Pass, Crater Lake, Diamond Lake, Union Creek, and Lake of the Woods. For the Winter Storm Watch, above 4,000 feet. * WHEN...For the Winter Storm Warning, until 10 PM PST this evening. For the Winter Storm Watch, from Tuesday afternoon through Wednesday evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Very strong winds could cause extensive damage to trees and power lines.

* WHAT...Heavy snow expected. Additional snow accumulations between 2 and 5 inches, except up to 8 inches for the higher terrain. Winds gusting as high as 40 mph. * WHERE...Northern and Eastern Klamath County and Western Lake County. This includes the cities of Crescent and Chemult, portions of Highway 97 and Highway 31, and the higher terrain. * WHEN...Until 10 PM PST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday morning and evening commutes.

* WHAT...Heavy snow expected Above 2500 Feet. Additional snow accumulations between 5 and 10 inches. * WHERE...Eastern Douglas County Foothills. This includes Toketee Falls. * WHEN...Until 10 PM PST this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Snow levels will be around 6000 feet early Sunday afternoon then fall rapidly during Sunday evening. Snow levels will remain around 2500 to 3000 feet in Eastern Douglas County Sunday evening through Monday evening.

* WHAT...South winds 30 to 40 mph with gusts up to 65 mph possible. * WHERE...Lake County and eastern Klamath County, and Modoc County. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles.