Flood Watch issued March 18 at 6:08AM PDT until March 20 at 5:00PM PDT by NWS Seattle WA
Issue date: 2026-03-18T13:08+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, Skagit and Whatcom. In west central Washington, King and Snohomish. * WHEN...From 1 PM PDT this afternoon through Friday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - High snow levels, heavy rainfall, and snowmelt runoff will lead to rises on area rivers with flooding possible. - http://www.weather.gov/safety/flood
Flood Warning issued March 18 at 6:04AM PDT until March 21 at 9:47AM PDT by NWS Seattle WA
Issue date: 2026-03-18T13:04+00:00
...The National Weather Service in Seattle WA has issued a Flood Warning for the following rivers in Washington... Tolt River Above Carnation affecting King County. .Heavy rain over the Central Cascades combined with high snow levels will push the Tolt Rive above Carnation above flood stage this morning. * WHAT...Minor flooding is forecast. * WHERE...Tolt River above Carnation. * WHEN...Until late Saturday morning. * IMPACTS...At 5,000.0 cfs, the Tolt River will flood Tolt River Rd NE and many driveways. Some homes in the San Souci area could be inaccessible due to deep and quick flood waters. This river level on the Tolt corresponds to a phase 3 flood in the King County flood system. * ADDITIONAL DETAILS... - At 4:15 AM PDT Wednesday the flow was 3,940.0 cfs. - Flood flow is 5,000.0 cfs. - Forecast...The river will rise above flood stage this morning to near 6400 cfs late this afternoon. It will then fall below flood stage just after midnight tonight. It will rise above flood stage again early Friday afternoon to near 5700 cfs Friday afternoon. It will then fall below flood stage again early Saturday morning. - http://www.weather.gov/safety/flood
Avalanche Warning issued March 17 at 7:30PM PDT by NWS Seattle WA
Issue date: 2026-03-18T02:30+00:00
AVWSEW The following message is transmitted at the request of the Northwest Avalanche Center. ...The Northwest Avalanche Center in Seattle has issued an Avalanche Warning... * WHAT...High avalanche danger is expected in the West Central zone Tuesday night and Wednesday. * WHERE...The West Central Zone is along the West Slopes of the Cascades from SR20 to north of I-90. It includes the Mountain Loop Highway and the mountains near and south of Hwy 2 along the West Slopes of the Cascades. Dangerous avalanche conditions are expected in neighboring zones. * WHEN...In effect from Tue 18:30 PDT to Wed 18:30 PDT. * IMPACTS...Large to very large natural wet snow avalanches are expected. Avalanches that release from higher elevations could run long distances to lower elevations or into terrain that is usually considered safe. * PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche conditions are expected. Travel in backcountry terrain is not recommended. Put a large buffer between you and terrain where avalanches can start, run, and stop. Consult https://www.nwac.us/ or www.avalanche.org for more detailed information. Similar avalanche danger may exist at locations outside the coverage area of this or any avalanche center. D'Amico
