Special Weather Statement issued December 17 at 3:33PM PST by NWS Seattle WA
Issue date: 2025-12-17T23:33+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 Friday. 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 rainfall acting as a trigger. Numerous landslides have already occurred in Whatcom, Skagit, King Counties and others. More landslides continue to be 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
Flood Warning issued December 17 at 3:23PM PST by NWS Seattle WA
Issue date: 2025-12-17T23:23+00:00
...The Flood Warning is extended for the following rivers in Washington... Cedar River Near Landsburg affecting King County. ...The Flood Warning continues for the following rivers in Washington... Green River Near Auburn affecting King County. White River At R Street Bridge affecting Pierce and King Counties. .Dam operations to maintain a safe flood pool for area dams could maintain elevated flow levels or they could raise or lower levels downstream of the dams. Dam regulation can change rapidly. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Green River near Auburn. * WHEN...Until further notice. * IMPACTS...At 9,000.0 cfs, the Green River will flood low areas of the middle Green River valley with water over SE Green Valley Rd. Some backwater inundation is possible in lower Mill Creek basin between Auburn and Kent. A flow of 9000 cfs feet on the Green River corresponds to a phase 3 flood in the King County flood system. * ADDITIONAL DETAILS... - At 1:45 PM PST Wednesday the flow was 9,550.0 cfs. - Flood flow is 9,000.0 cfs. - Forecast...The river is expected to rise to a crest of 9,900 cfs late tonight then slowly drift lower over the next several days but remain above flood flow. - http://www.weather.gov/safety/flood
Flood Watch issued December 17 at 2:33PM PST until December 19 at 4:00PM PST by NWS Seattle WA
Issue date: 2025-12-17T22:33+00:00
Most rivers have crested or will crest by tomorrow, however a few rivers could still have renewed flooding. * 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 and Skagit. In west central Washington, King, Pierce and Thurston. * WHEN...Through Friday 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... - With rivers running high and with another rain event tomorrow, uncertainty in how much rain, the snow fall level, and snow melt, leaves the possibility of further flooding. This includes the Chehalis, Cedar, White, Green, and Skagit Rivers. - Dam operations in managin the flood waters in reservoir will also river levelsmultiple times over the next few days. - http://www.weather.gov/safety/flood
Wind Advisory issued December 17 at 1:09PM PST until December 18 at 7:00PM PST by NWS Seattle WA
Issue date: 2025-12-17T21:09+00:00
* WHAT...South winds 15 to 25 mph with gusts up to 45 mph expected. * WHERE...Portions of northwest and west central Washington. * WHEN...From 11 AM to 7 PM PST Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.
Blizzard Warning issued December 17 at 11:52AM PST until December 17 at 12:00PM PST by NWS Seattle WA
Issue date: 2025-12-17T19:52+00:00
* WHAT...Snow expected. Total snow accumulations up to 5 to 10 inches. Winds may gust up to 35 mph this afternoon. * 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...Until 10 AM PST Thursday. * IMPACTS...Travel could be very difficult. Strong winds could cause tree damage. * ADDITIONAL DETAILS...Snow levels will increase Thursday morning to around 6000 feet, which could bring a brief period of freezing rain. Confidence is low for freezing rain, but the potential exists for light accumulations.
Winter Weather Advisory issued December 17 at 11:52AM PST until December 18 at 10:00AM PST by NWS Seattle WA
Issue date: 2025-12-17T19:52+00:00
* WHAT...Snow expected. Total snow accumulations up to 5 to 10 inches. Winds may gust up to 35 mph this afternoon. * 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...Until 10 AM PST Thursday. * IMPACTS...Travel could be very difficult. Strong winds could cause tree damage. * ADDITIONAL DETAILS...Snow levels will increase Thursday morning to around 6000 feet, which could bring a brief period of freezing rain. Confidence is low for freezing rain, but the potential exists for light accumulations.
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
