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* WHAT...Snow expected. Total snow accumulations 6-12 inches above 4000 feet with 8 to 16 inches above 5000 feet. * WHERE...In Oregon, North Oregon Cascades and Cascades of Marion and Linn Counties. In Washington, South Washington Cascades. * WHEN...From 2 PM Wednesday to 5 PM PDT Friday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. * ADDITIONAL DETAILS...A cold front will bring a rapid onset of accumulating snow above 4000-5000 feet Wednesday afternoon into Wednesday evening. A lull in snow will most likely occur Wednesday night into Thursday morning before additional snow showers bring higher snowfall rates to the Cascades late Thursday into early Friday.

* WHAT...Heavy snow expected above 5000 ft in the Cascades in Klamath and Douglas counties. Total snow accumulations 1 to 2 feet. Winds gusting as high as 45 mph. * WHERE...South Central Oregon Cascades, including Crater Lake National Park, Diamond Lake and Highways 230, 62 and 138 as well as Highway 58 at Willamette Pass. * WHEN...From 2 PM Wednesday to 5 PM PDT Friday. * IMPACTS...Travel could be very difficult to impossible. Gusty winds and heavy snow could bring down tree branches.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...North and Central Coast Range Valleys of Oregon, Central Willamette Valley, Tillamook County Coast, Lower Columbia River, Tualatin Valley, Portland West Hills and Chehalem Mountain, Benton County Lowlands, Linn County Lowlands, and Willapa and Wahkiakum Lowlands. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...North and Central Coast Range Valleys of Oregon, Central Willamette Valley, Tillamook County Coast, Lower Columbia River, Tualatin Valley, Portland West Hills and Chehalem Mountain, Benton County Lowlands, Linn County Lowlands, and Willapa and Wahkiakum Lowlands. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

* WHAT...Snow. Additional snow accumulations up to one inch between 7 AM and 11 AM. * WHERE...Western Okanogan County County. * WHEN...Until 11 AM PDT this morning. * IMPACTS...With snow levels around 4000 feet, motorists going over Washington Pass with an elevation of 5400 feet can expect winter driving conditions near the pass.

* WHAT...Snow expected. Total snow accumulations of 5 to 10 inches. * WHERE...West Slopes North Cascades and Passes. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Plan on slippery road conditions.

* WHAT...Snow expected. Total snow accumulations 4 to 8 inches above 4000 feet. * WHERE...Washington Pass. * WHEN...Until 11 AM PDT Monday. * IMPACTS...Plan on slippery road conditions on North Cascades Highway State Route 20 over Washington Pass.

* WHAT...Snow expected. Total snow accumulations of 5 to 10 inches. * WHERE...West Slopes North Cascades and Passes above 4000 feet including Mt. Baker Ski area. * WHEN...Until 11 AM PDT Monday. * IMPACTS...Plan on slippery road conditions.

At 224 PM PDT, Doppler radar was tracking a strong thunderstorm over Vancouver Downtown, moving northeast at 30 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Vancouver Downtown, Portland, Vancouver, Walnut Grove, Barberton, Hazel Dell North, Orchards, Five Corners, Hazel Dell South, Lake Shore, Mill Plain, Meadow Glade, Salmon Creek, Jantzen Beach, Brush Prairie, Minnehaha, Vancouver Mall, and Sifton. This includes the following highways in Washington... Interstate 5 between mile markers 1 and 5. Interstate 205 between mile markers 30 and 35. State Route 503 between mile markers 2 and 4.

At 224 PM PDT, Doppler radar was tracking a strong thunderstorm over Vancouver Downtown, moving northeast at 30 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Vancouver Downtown, Portland, Vancouver, Walnut Grove, Barberton, Hazel Dell North, Orchards, Five Corners, Hazel Dell South, Lake Shore, Mill Plain, Meadow Glade, Salmon Creek, Jantzen Beach, Brush Prairie, Minnehaha, Vancouver Mall, and Sifton. This includes the following highways in Washington... Interstate 5 between mile markers 1 and 5. Interstate 205 between mile markers 30 and 35. State Route 503 between mile markers 2 and 4.

* WHAT...Snow expected. Total snow accumulations 4 to 8 inches above 4000 feet. * WHERE...Washington Pass * WHEN...From 5 PM this afternoon to 11 AM PDT Monday. * IMPACTS...Plan on slippery road conditions on Highway 20 over Washington Pass. * ADDITIONAL DETAILS...Light accumulations are possible today as well.

* WHAT...Snow expected. Total snow accumulations of 5 to 10 inches. * WHERE...West Slopes North Cascades and Passes above 4000 feet including Mt. Baker Ski area. * WHEN...From 5 PM this afternoon to 11 AM PDT Monday. * IMPACTS...Plan on slippery road conditions.

* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph. * WHERE...Central and eastern Lake County and the Warners Mountains in eastern Modoc County. This includes portions of Highway 31 between Summer Lake and Paisley. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Gusty winds will blow around unsecured objects like holiday decorations or empty trash bins. Winds this strong can make driving difficult, especially for high profile vehicles.

* WHAT...Snow expected. Total snow accumulations of 5 to 10 inches. * WHERE...West Slopes North Cascades and Passes above 4000 feet including Mt. Baker Ski area. * WHEN...From 5 PM Sunday to 11 AM PDT Monday. * IMPACTS...Plan on slippery road conditions.

* WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph expected. * WHERE...Central and eastern Lake County and the Warners Mountains in eastern Modoc County. This includes portions of Highway 31 between Summer Lake and Paisley. * WHEN...From 8 PM this evening to 11 AM PDT Sunday. * IMPACTS...Gusty winds will blow around unsecured objects like holiday decorations or empty trash bins. Winds this strong can make driving difficult, especially for high profile vehicles.

* WHAT...Snow expected. Total snow accumulations 4 to 8 inches above 4000 feet. * WHERE...Washington Pass * WHEN...From 5 PM Sunday to 11 AM PDT Monday. * IMPACTS...Plan on slippery road conditions on Highway 20 over Washington Pass. * ADDITIONAL DETAILS...Light accumulations are possible during the day on Sunday as well.

* WHAT...Southeast winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Admiralty Inlet Area. * WHEN...Until 7 AM PDT this morning. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...Southwest winds 30 to 40 mph with gusts up to 65 mph expected. * WHERE...Central and eastern Lake County, eastern Klamath County. Includes portions of Highway 31 between Summer Lake and Paisley and Highway 299 in Modoc County. * WHEN...From 8 PM this evening to 11 AM PDT Sunday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...Southeast winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Admiralty Inlet Area. * WHEN...Until 7 AM PDT Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* WHAT...Southeast winds 15 to 20 mph with gusts up to 35 mph expected. * WHERE...Western Skagit County and Western Whatcom County. * WHEN...Until 5 AM PDT Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.