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* WHAT...Snow expected. Total snow accumulations between 1 and 3 inches below 3000 feet. Above 3000 feet 3 to 6 inches of snow is expected. * WHERE...Rosalia, Lookout Pass, Oakesdale, Pullman, Colfax, Tekoa, Mullan, Uniontown, St. Maries, Kellogg, Potlatch, Fernwood, Moscow, Genesee, Dobson Pass, Plummer, Pinehurst, La Crosse, Osburn, Fourth Of July Pass, and Wallace. * WHEN...From 11 PM this evening to 10 PM PST Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday morning and evening commutes.

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches, except 3 to 7 inches west of MOsier, including White Salmon. * WHERE...In Oregon, Eastern Columbia River Gorge of Oregon. In Washington, Eastern Columbia River Gorge of Washington. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Snow amounts will vary significantly across the advised area. Areas in the far eastern Gorge, such as Arlington and Biggs Junction, may see an inch of accumulation mixed with rain.

* WHAT...Snow. Additional snow accumulations of 4 to 8 inches, with accumulations up to 14 inches above 4500 feet. Winds gusting as high as 35 mph. * WHERE...Lower Slopes of the Eastern Washington Cascades Crest. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Heaviest snow amounts are expected within western Yakima and Klickitat Counties. Cle Elum and Cliffdell may only receive 1 to 2 inches of snow.

* WHAT...Snow. Additional snow accumulations of 2 to 6 inches. Locally heavier across the peaks and higher terrain. * WHERE...Simcoe Highlands. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute.

* WHAT...Snow. Additional snow accumulations of 4 to 10 inches above 4000 feet. * WHERE...In Oregon, Northern Blue Mountains of Oregon. In Washington, Northwest Blue Mountains. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute.

* WHAT...Snow. Additional snow accumulations of 6 to 12 inches south of I-90; 10 to 20 inches above 5000 feet. Winds gusting as high as 35 mph. * WHERE...Upper Slopes of the Eastern Washington Cascades Crest. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...I-90 through Snoqualmie Pass will be impacted by snow but is expected to only receive accumulations of 2 to 4 inches.

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches, except 3 to 7 inches west of MOsier, including White Salmon. * WHERE...In Oregon, Eastern Columbia River Gorge of Oregon. In Washington, Eastern Columbia River Gorge of Washington. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Snow amounts will vary significantly across the advised area. Areas in the far eastern Gorge, such as Arlington and Biggs Junction, may see an inch of accumulation mixed with rain.

* WHAT...Heavy snow. Additional snow accumulations of 3 to 8 inches. * WHERE...North Central Oregon. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute.

* WHAT...Heavy snow. Additional snow accumulations of 3 to 6 inches. * WHERE...Foothills of the Southern Blue Mountains of Oregon. * WHEN...Until 4 AM PST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute.

* WHAT...Heavy snow. Additional snow accumulations of 10 to 20 inches, locally heavier particularly along the crests and passes. Additional accumulations of 3 to 6 inches for the lower slopes of the Cascades including La Pine, Sunriver, Sisters, and Camp Sherman. * WHERE...East Slopes of the Oregon Cascades. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute.

* WHAT...Snow. Additional snow accumulations of 4 to 10 inches above 4000 feet. * WHERE...In Oregon, Northern Blue Mountains of Oregon. In Washington, Northwest Blue Mountains. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute.

* WHAT...Snow. Additional snow accumulations of up to 1 to 3 inches. * WHERE...Central Oregon. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute.

* WHAT...Snow. Additional snow accumulations of 7 to 12 inches. Winds gusting as high as 40 mph. * WHERE...In California, elevations above 5000 feet in Modoc County. In Oregon, elevations above 5000 feet in the Klamath Basin, Northern and Eastern Klamath County and Western Lake County and Central and Eastern Lake County. This includes highways 97 and 232 north of Chiloquin, highway 140 near Bly and over the Warners, and highway 299 over Cedar Pass. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be difficult. Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Snow levels will vary through the event from 4000 feet tonight up to 5000 feet Thursday afternoon. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

* WHAT...Heavy snow above 5000 feet. Additional snow accumulations of 15 to 20 inches with up to 35 inches over high remote terrain. Winds gusting as high as 40 mph over exposed terrain. * WHERE...Elevations above 5000 feet in the South Central Oregon Cascades. This includes highways 58 near Willamette Pass, 138 and 230 near Diamond Lake Junction and highway 62 near Crater Lake and Crater Lake Park. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be difficult in the high Cascades and impossible traveling to Crater Lake. Patchy blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...Snow levels will vary through the event from 4000 feet tonight up to 5000 feet Thursday afternoon. Snowfall rates could reach 1" an hour for long periods of time on Thursday. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

* WHAT...Snow above 5000 feet. Additional snow accumulations of 10 to 14 inches with up to 36 inches over high remote terrain. Winds gusting as high as 40 mph over exposed terrain. * WHERE...Siskiyou Mountains and Southern Oregon Cascades. This includes the Mt Ashland Ski Road and Lake of the Woods. * WHEN...Until 4 AM PST Friday. * IMPACTS...Travel could be difficult in the high Cascades or Siskiyous. * ADDITIONAL DETAILS...Snow levels will vary through the event from 4000 feet tonight up to 5000 feet Thursday afternoon. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

* WHAT...Heavy snow. Additional snow accumulations of 4 to 8 inches at river levels, with 8 to 16 inches above 500 feet. Winds gusting as high as 50 mph. * WHERE...In Oregon, Western Columbia River Gorge and Central Columbia River Gorge. In Washington, Western Columbia River Gorge and Central Columbia River Gorge. * WHEN...Until 10 PM PST Thursday. * IMPACTS...Travel could be very difficult, even along Interstate 84 and Washington SR-14. The combination of heavy snow and gusty winds may lead to whiteout conditions at times. Gusty winds could bring down tree branches and cause localized power outages. The hazardous conditions could impact the commutes Wednesday evening and Thursday morning.

* WHAT...Heavy snow. Additional snow accumulations up to 12 inches, except up to 24 inches above 2000 feet and locally up to 30 inches in eastern Skamania County. Winds gusting as high as 50 mph, mainly near the Columbia River Gorge. * WHERE...South Washington Cascades and South Washington Cascade Foothills. * WHEN...Until 10 PM PST Thursday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will range from river level near the Columbia River Gorge and eastern Skamania County to 2000 feet in northern Cowlitz County. Heaviest snow above 2000 feet.

* WHAT...Wet snow. Additional snow accumulations of 2 to 6 inches, except 5 to 10 inches above 2000 feet. Winds gusting as high as 35 mph. * WHERE...In Oregon, Coast Range of Northwest Oregon. In Washington, Willapa Hills. * WHEN...Until 4 PM PST Thursday. * IMPACTS...Plan on slippery road conditions.

* WHAT...Wet snow. Total snow accumulations of up to one inch. Winds gusting as high as 40 mph. * WHERE...In Oregon, Lower Columbia and Greater Portland Metro Area. In Washington, I-5 Corridor in Cowlitz County and Greater Vancouver Area. * WHEN...From 8 PM this evening to 4 PM PST Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning commute. * ADDITIONAL DETAILS...Most likely areas to be impacted are north and east of Interstate 205, as well as elevations above 500 feet and the eastern slopes of the Coast Range in western Washington County.

* WHAT...Heavy snow. Additional snow accumulations of 4 to 8 inches at river levels, with 8 to 16 inches above 500 feet. Winds gusting as high as 50 mph. * WHERE...In Oregon, Western Columbia River Gorge and Central Columbia River Gorge. In Washington, Western Columbia River Gorge and Central Columbia River Gorge. * WHEN...Until 10 PM PST Thursday. * IMPACTS...Travel could be very difficult, even along Interstate 84 and Washington SR-14. The combination of heavy snow and gusty winds may lead to whiteout conditions at times. Gusty winds could bring down tree branches and cause localized power outages. The hazardous conditions could impact the commutes Wednesday evening and Thursday morning.