Flood Warning issued December 18 at 6:01AM PST by NWS Seattle WA
Issue date: 2025-12-18T14:01+00:00
...The Flood Warning continues for the following rivers in Washington... Green River Near Auburn affecting King County. .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 4:45 AM PST Thursday the flow was 9,590.0 cfs. - Flood flow is 9,000.0 cfs. - Recent Activity...The maximum river flow in the 24 hours ending at 4:45 AM PST Thursday was 9,600.0 cfs. - Forecast...The river is expected to remain near 9,300 cfs today then slowly drift lower over the next several days but remain above flood flow. - http://www.weather.gov/safety/flood
Winter Weather Advisory issued December 18 at 3:41AM PST until December 18 at 10:00AM PST by NWS Seattle WA
Issue date: 2025-12-18T11:41+00:00
* WHAT...Snow. Additional snow accumulations up to 5 to 7 inches. Winds gusting as high as 40 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...Until 10 AM PST this morning. * IMPACTS...Travel could be very difficult. Strong winds could cause tree damage. * ADDITIONAL DETAILS...Snow levels will increase this 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.
Wind Advisory issued December 18 at 3:32AM PST until December 18 at 7:00PM PST by NWS Seattle WA
Issue date: 2025-12-18T11:32+00:00
* WHAT...Southwest winds 15 to 25 mph with gusts up to 45 mph expected. * WHERE...Grays Harbor County Coast, Northern Washington Coast, Foothills and Valleys of Pierce and Southern King Counties, Foothills and Valleys of Thurston and Lewis Counties, Lowlands of Lewis and Southern Thurston Counties, Lowlands of Pierce and Southern King Counties, Olympia and Southern Puget Sound, and Willapa and Black Hills. * WHEN...From 11 AM this morning to 7 PM PST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Due to saturated soils, increased impacts from higher winds are possible.
Flood Watch issued December 17 at 10:31PM PST until December 19 at 4:00PM PST by NWS Seattle WA
Issue date: 2025-12-18T06:31+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. 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 levels multiple times over the next few days. - http://www.weather.gov/safety/flood
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
