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* WHAT...Significant coastal flooding expected. Inundation of around 3 feet above ground level is possible along shorelines and low-lying coastal areas. * WHERE...Eastern Strait of Juan de Fuca and Western Strait of Juan De Fuca zones. * WHEN...From 9 AM this morning to 3 PM PST this afternoon. * IMPACTS...Significant coastal flooding due to high tides and storm surge is expected. This is expected to lead to numerous road closures. Low lying property including homes, businesses, and some critical infrastructure may be inundated. Sharline erosion or damage may occur. * ADDITIONAL DETAILS...Highest impacts will occur in the hours near high tide at around 12 PM. Winds and waves may locally exacerbate impacts.

* WHAT...Snow expected above 3500 feet. Total snow accumulations 6 to 10 inches. * WHERE...South Washington Cascades. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very difficult.

* WHAT...Snow expected Above 3500 feet. Total snow accumulations 6 to 12 inches. * WHERE...Northern and Central Oregon Cascades. * WHEN...Until 10 AM PST Sunday. * IMPACTS...Travel could be very difficult.

...SIGNIFICANT SNOWFALL ANTICIPATED TONIGHT INTO SUNDAY MORNING ACROSS THE OREGON CASCADES AND NORTHERN BLUE MOUNTAINS... * WHAT...Snow for elevations above 4500 feet. Additional snow accumulations up to 6 inches. Winds gusting as high as 35 mph will cause blowing and drifting of snow. * WHERE...In Oregon, Northern Blue Mountains of Oregon. In Washington, Northwest Blue Mountains. * WHEN...Until 7 AM PST Sunday. * IMPACTS...Travel could be difficult due to periods of moderate to heavy snow.

...SIGNIFICANT SNOWFALL ANTICIPATED TONIGHT INTO SUNDAY MORNING ACROSS THE OREGON CASCADES AND NORTHERN BLUE MOUNTAINS... * WHAT...Snow for elevations above 4000 feet. Additional snow accumulations between 4 and 8 inches, with 12 inches or more expected above 5000 feet. Wind gusts of 30 to 40 mph will also be possible, causing blowing and drifting of snow. * WHERE...East Slopes of the Oregon Cascades. * WHEN...Until 10 AM PST Sunday. * IMPACTS...Heavy snowfall and very low visibility will create extremely dangerous driving conditions.

...SIGNIFICANT SNOWFALL ANTICIPATED TONIGHT INTO SUNDAY MORNING ACROSS THE OREGON CASCADES AND NORTHERN BLUE MOUNTAINS... * WHAT...Snow for elevations above 4500 feet. Additional snow accumulations up to 6 inches. Winds gusting as high as 35 mph will cause blowing and drifting of snow. * WHERE...In Oregon, Northern Blue Mountains of Oregon. In Washington, Northwest Blue Mountains. * WHEN...Until 7 AM PST Sunday. * IMPACTS...Travel could be difficult due to periods of moderate to heavy snow.

* WHAT...Large waves and hazardous surf conditions. Breakers up to 23 feet. * WHERE...Clatsop and Tillamook Coast, and South Washington Coast. * WHEN...Until 10 PM PST this evening. * 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 up to 23 feet. * WHERE...Central Coast of Oregon. * WHEN...Until 10 PM PST this evening. * 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 up to 23 feet. * WHERE...Clatsop and Tillamook Coast, and South Washington Coast. * WHEN...Until 10 PM PST this evening. * 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...Visibility less than one half mile in dense fog. * WHERE...Yakima Valley. * WHEN...Until 11 PM PST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Patchy dense freezing fog can also be expected. Be prepared for black ice on the roadways.

* WHAT...South winds 20 to 30 mph with gusts up to 40 mph. * WHERE...Admiralty Inlet Area, Central Coast, San Juan County, Western Skagit County, Western Whatcom County, and Everett and Vicinity. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...Southwest winds 15 to 20 mph with gusts up to 30 mph. * WHERE...Hood Canal Area, Bremerton and Vicinity, Seattle and Vicinity, and Tacoma Area. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...Southwest winds 20 to 30 mph with gusts up to 45 mph. * WHERE...North Coast. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...Heavy snow at or above elevations greater than 3500 ft. Additional snow accumulations between 6 and 15 inches. Winds gusting as high as 45 mph. * WHERE...West Slopes North Cascades and Passes. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very difficult to impossible. Gusty winds could bring down tree branches.

* WHAT...Snow expected at or above elevations greater than 3500 ft. Total snow accumulations at White Pass of 8 to 12 inches expected. * WHERE...West Slopes South Central Cascades and Passes. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very difficult to impossible.

* WHAT...Snow at or above elevations greater than 3500 ft. Additional snow accumulations up to 11 inches. Winds gusting as high as 35 mph. * WHERE...West Slopes North Central Cascades and Passes. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very difficult.

* WHAT...South winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Curry County Coast and South Central Oregon Coast, from Cape Arago south to Brookings, including portions of Highway 101. * WHEN...From Sunday evening through Monday 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...Visibility less than one half mile in dense fog. * WHERE...In Oregon, Lower Columbia Basin of Oregon. In Washington, Yakima Valley. * WHEN...Until 1 PM PST this afternoon. * IMPACTS...Low visibility could make driving conditions hazardous.

* WHAT...Visibility less than one half mile in dense fog. * WHERE...In Oregon, Lower Columbia Basin of Oregon. In Washington, Yakima Valley. * WHEN...Until 1 PM PST this afternoon. * IMPACTS...Low visibility could make driving conditions hazardous.

* WHAT...For the High Surf Advisory, large waves and hazardous surf conditions. Breakers up to 25 feet. For the Coastal Flood Advisory, tidal overflow flooding expected. * WHERE...Clatsop and Tillamook Coast, and South Washington Coast. * WHEN...For the Coastal Flood Advisory, until 1 PM PST this afternoon. For the High Surf Advisory, until 6 PM PST this evening. * IMPACTS...Minor flooding, up to one foot above ground level, during high tides is expected in the low lying areas near bays, sloughs, and the lower reaches of the coastal rivers. 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. * ADDITIONAL DETAILS...Tides are expected to peak around 11 AM PST Saturday. Toke Point tidal gauge is expected to peak around 12.9 feet, Tongue Point tidal gauge is expected to peak around 11.8 feet, and Garibaldi tidal gauge is expected to peak around 10.9 feet.