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Light snow with additional accumulation less than 1 inch is expected across central Oregon for the next several hours. Be careful when traveling this evening and prepare for winter weather conditions.

* WHAT...Wet snow. Additional snow accumulations up to one inch. * WHERE...Foothills of the Blue Mountains of Oregon. * WHEN...Until 7 PM PST this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Even light snowfall amounts can accumulate on roads and cause dangerous driving conditions due to slippery and snow-covered roads.

* WHAT...Wet snow. Additional snow accumulations up to one inch. * WHERE...North Central Oregon. * WHEN...Until 7 PM PST this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Even light snowfall amounts can accumulate on roads and cause dangerous driving conditions due to slippery and snow-covered roads.

ESFSEW A stronger storm will set up along the coast over the weekend with the potential to bring more significant precipitation to the region. Heaviest amounts over the southwestern slopes of the Olympic Mountains may result in potential for the Skokomish River to rise above flood stage Saturday afternoon. Snow levels around 4500 feet Saturday are expected to lower to around 3000 feet early Sunday morning. Ongoing precipitation through early next week could help keep the river levels elevated into Monday. Please monitor the latest river forecasts from the National Weather Service for additional information.

* WHAT...Snow expected at or above elevations greater than 3500 ft. Total snow accumulations at Stevens Pass between 8 and 12 inches expected. Significantly higher amounts will be possible at Mount Baker Ski Area. * WHERE...Cascades of Whatcom, Skagit, Snohomish, and King Counties, including Stevens Pass. * WHEN...From 1 PM Friday to 10 AM PST Sunday. * IMPACTS...Snow-covered roads and minor travel delays possible across Stevens Pass. * ADDITIONAL DETAILS...Lower amounts are expected at Snoqualmie Pass.

* WHAT...Snow expected. Total snow accumulations 1 to 4 inches across the valleys and lowlands. Above 3500 feet snow accumulations of 4 to 8 inches. * WHERE...Portions of Central and North Central Washington including but not limited to the higher benches around Wenatchee, Leavenworth, Plain, Waterville, Winthrop, Omak, Republic. Passes impacted are Sherman, Loup Loup, Blewett, Stevens, Disautel and Wauconda. * WHEN...From 4 PM Friday to 10 AM PST Saturday. * IMPACTS...Winter driving conditions. Drive with caution. * ADDITIONAL DETAILS...Snow will begin Friday morning or early afternoon, but accumulations will be little to none. The exception is west of Wenatchee along Highway 2 up towards Stevens Pass, where the lower elevations could see an inch. Locations along the Columbia River will see little if any snow through this event.

* WHAT...Significant coastal flooding possible. Inundation of 2 to 3 feet above ground level is likely along shorelines and low-lying coastal areas. Large waves of 17 to 19 feet are expected along the coast. * WHERE...North Coast zone. * WHEN...From Saturday morning through Saturday afternoon. * IMPACTS...Numerous roads may be closed. Low-lying property including homes, businesses, and some critical infrastructure may be inundated. Some shoreline erosion may occur. * ADDITIONAL DETAILS...Highest impacts will occur around the 11 AM high tide on Saturday. Forecast confidence is currently moderate in 2 to 3 feet of inundation. However, there is a 10 percent chance of water levels up to 3.5 feet above ground level. In addition to the expected flooding on Saturday, flooding may continue through Monday during the late morning to mid-day high tides.

* WHAT...For the Coastal Flood Advisory, minor coastal flooding with inundation of around 2 feet above ground level is expected. For the Coastal Flood Watch, significant coastal flooding possible. Inundation of 2 to 3 feet above ground level is likely along shorelines and low-lying coastal areas. Large waves of 17 to 19 feet are expected along the coast. * WHERE...Central Coast zone. * WHEN...For the Coastal Flood Advisory, from 7 AM to 1 PM PST Friday. For the Coastal Flood Watch, from Saturday morning through Saturday afternoon. * IMPACTS...Numerous roads may be closed. Low-lying property including homes, businesses, and some critical infrastructure may be inundated. Some shoreline erosion may occur. * ADDITIONAL DETAILS...Highest impacts will occur around the late morning high tide on Friday and Saturday. Additional flooding may continue through Monday during the late morning to mid-day high tides.

* WHAT...For the Coastal Flood Advisory, minor coastal flooding with inundation of around 2 feet above ground level is expected. For the Coastal Flood Watch, significant coastal flooding possible. Inundation of 2 to 3 feet above ground level is likely along shorelines and low-lying coastal areas. Large waves of 17 to 19 feet are expected along the coast. * WHERE...Central Coast zone. * WHEN...For the Coastal Flood Advisory, from 7 AM to 1 PM PST Friday. For the Coastal Flood Watch, from Saturday morning through Saturday afternoon. * IMPACTS...Numerous roads may be closed. Low-lying property including homes, businesses, and some critical infrastructure may be inundated. Some shoreline erosion may occur. * ADDITIONAL DETAILS...Highest impacts will occur around the late morning high tide on Friday and Saturday. Additional flooding may continue through Monday during the late morning to mid-day high tides.

* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...Until 2 PM MST Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.

* WHAT...South winds 35 to 45 mph with gusts up to 65 mph expected. * WHERE...Portions of Lake County, eastern Klamath County, and Modoc County. This includes portions of highway 140 east of Lakeview, highway's 395, 31, and 299 east of Alturas. The cities of Lakeview, and Valley Falls, * WHEN...From 4 PM Friday to 7 AM PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Winds will be strongest over the ridges, where gusts could briefly approach high wind warning criteria.

* WHAT...Southeast winds 25 to 35 mph with gusts up to 50 mph expected. * WHERE...Portions of Interstate 5 south of Central Point. The cities of Medford, White City, Talent, Phoenix and Ashland. * WHEN...From 7 AM to 10 PM PST Friday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Winds are expected to be strongest south of Medford to Ashland.

* WHAT...South winds 40 to 50 mph with gusts up to 70 mph possible. * WHERE...Southern Oregon coast from Brookings to Cape Arago, including Gold Beach, Pistol River, Humbug Mountain, Cape Blanco, Bandon, area headlands and capes, and exposed portions of Highway 101. * WHEN...From 7 AM to 7 PM PST Friday. * IMPACTS...Damaging winds could blow down trees and power lines, and may damage unsecured property. Power outages are possible. Travel could be difficult, especially for high profile vehicles.

* WHAT...South winds 40 to 50 mph with gusts up to 70 mph possible. * WHERE...Southern Oregon coast from Brookings to Cape Arago, including Gold Beach, Pistol River, Humbug Mountain, Cape Blanco, Bandon, area headlands and capes, and exposed portions of Highway 101. * WHEN...From Friday morning through Friday evening. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles.

ESFSEW A stronger storm will set up along the coast over the weekend with the potential to bring more significant precipitation to the region. Heaviest amounts over the southwestern slopes of the Olympic Mountains may result in potential for the Skokomish River to rise above flood stage Saturday afternoon. Snow levels around 4500 feet Saturday are expected to lower to around 3000 feet early Sunday morning. Ongoing precipitation through early next week could help keep the river levels elevated into Monday. Please monitor the latest river forecasts from the National Weather Service for additional information.

* WHAT...Mixed precipitation expected. Total snow accumulations up to two inches and ice accumulations less than a tenth of an inch. * WHERE...North Central Oregon. * WHEN...Until 7 PM PST this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Even light ice and snow can cause dangerous driving conditions due to slippery roads.

* WHAT...Mixed precipitation expected. Ice accumulations less than a tenth of an inch. * WHERE...Foothills of the Blue Mountains of Oregon. * WHEN...Until 7 PM PST this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Even light ice can cause dangerous driving conditions due to slippery roads. * ADDITIONAL DETAILS...The greatest threat for freezing rain is expected to be right at the base of the Blue Mountains, including I-84 near Cabbage Hill.

* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...Until 2 PM MST Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.

* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of southwest Idaho and northeast and southeast Oregon. * WHEN...Until 2 PM MST /1 PM PST/ this afternoon. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.

* WHAT...Mixed precipitation expected. Total snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Foothills of the Blue Mountains of Oregon. * WHEN...Until noon PST Thursday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Even light snowfall amounts can accumulate on roads and cause dangerous driving conditions due to slippery and snow-covered roads. The hazardous conditions could impact the Thursday morning commute.