Flood Watch issued December 17 at 3:43AM PST until December 18 at 4:00PM PST by NWS Seattle WA
Issue date: 2025-12-17T11:43+00:00
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of northwest and west central Washington, including the following counties, in northwest Washington, Grays Harbor, Skagit and Whatcom. In west central Washington, King, Lewis, Pierce, Snohomish and Thurston. * WHEN...Through Thursday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS... - Urban and small stream flooding remains possible for areas with poor drainage. Very saturated soils will maintain increased risk for potential landslides and debris flows off of burn scars. - http://www.weather.gov/safety/flood
Flood Warning issued December 17 at 2:11AM PST until December 17 at 11:26PM PST by NWS Seattle WA
Issue date: 2025-12-17T10:11+00:00
...The National Weather Service in Seattle WA has issued a Flood Warning for the following rivers in Washington... Snoqualmie River Near Snoqualmie Falls affecting King County. * WHAT...Minor flooding is forecast. * WHERE...Snoqualmie River near Snoqualmie Falls. * WHEN...Until late this evening. * IMPACTS...At 30,000.0 cfs, the Snoqualmie River will cause widespread flooding of pasture lands and roads along the river from the town of Snoqualmie downstream through Fall City. Roads that may become flooded include Fall City-Carnation...Tolt Hill... and Novelty Flats Roads. This river level on the Snoqualmie corresponds roughly to a phase 3 flood in the King County flood system. * ADDITIONAL DETAILS... - At 12:30 AM PST Wednesday the flow was 16,000 cfs. - Flood flow is 20,000 cfs. - Forecast...The river will rise above flood stage around 4 am and crest near 30,000 cfs late this morning. It will then fall below flood stage late this afternoon. - http://www.weather.gov/safety/flood
Wind Advisory issued December 17 at 12:31AM PST until December 17 at 6:00AM PST by NWS Seattle WA
Issue date: 2025-12-17T08:31+00:00
* WHAT...Southwest winds 20 to 30 mph with gusts 40 to 45 mph expected. * WHERE...Foothills and Valleys of the North Cascades, Lowlands of Western Whatcom County, San Juan County, City of Seattle, Eastside, Foothills and Valleys of Central King County, Foothills and Valleys of Pierce and Southern King Counties, Foothills and Valleys of Snohomish and Northern King Counties, and Shoreline / Lynnwood / South Everett Area. * WHEN...Until 6 AM PST early this morning. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Saturated soils will make it easier for trees to come down in these winds.
High Wind Warning issued December 17 at 12:31AM PST until December 17 at 6:00AM PST by NWS Seattle WA
Issue date: 2025-12-17T08:31+00:00
* WHAT...Southwest to west winds 25 to 35 mph with gusts 50 to 60 mph. Gusts could be as high as 70 mph near Whidbey Island until 4 am. * WHERE...Portions of northwest and west central Washington. * WHEN...Until 6 AM PST early this morning. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Saturated soils will make it easier for trees to come down in these winds.
Blizzard Warning issued December 16 at 8:20PM PST until December 17 at 12:00PM PST by NWS Seattle WA
Issue date: 2025-12-17T04:20+00:00
* WHAT...Snow expected at or above elevations greater than 2000 ft. Blizzard conditions are possible at times due to winds gusting as high as 45 to 50 mph. * WHERE...Cascades of Snohomish and Northern King Counties, Cascades of Whatcom and Skagit Counties, Cascades of Pierce and Lewis Counties, and Cascades of Southern King County. * WHEN...From 2 AM to noon PST Wednesday. * IMPACTS...Travel and other activities could be very difficult to impossible. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. Very strong winds could cause extensive tree damage. * ADDITIONAL DETAILS...Total snow accumulations upwards of 10 to 15 inches at Snoqualmie Pass, with 15 to 20 inches at Stevens Pass. Mount Rainier and Mount Baker could see amounts upwards to 2 feet or more.
Special Weather Statement issued December 16 at 3:34PM PST by NWS Seattle WA
Issue date: 2025-12-16T23:34+00:00
Significant rainfall over the past week has increased soil moisture to high levels across western Washington. Additional rainfall of 1 to 2 inches is expected through the rest of today. This amount of rain will continue to put extra pressure on soil instability, leading to an increased threat of landslides and debris flows, especially from recent burned areas, with this new ranfall acting as a trigger. Numerous landslides have already occurred in Whatcom, Skagit, King Counties and others. More landslides are possible. Areas most susceptible to landslides debris flows under these conditions are steep coastal bluffs, other steep hillsides or road cuts, and recent burned areas. A diminishing threat of landslides and debris flows will continue for several days after the rain ends. For more information about current conditions, visit www.weather.gov/seattle, select Hydrology, and then scroll down for the links to the landslide information pages. For more information on landslides, visit the website for the Washington State Department of Natural Resources landslide geologic hazards at: http://bit.ly/2mtA3wn
