Washington Winter Weather Advisory | Effective 05/16/2026 00:58

Headline: 
Winter Weather Advisory issued May 16 at 12:58AM PDT until May 17 at 8:00AM PDT by NWS Seattle WA
Event: 
Winter Weather Advisory
Urgency: 
Expected
Effective: 
May 16, 2026 - 12:58am
Expires: 
May 16, 2026 - 11:00am
Description: 
* WHAT...Snow showers expected. Total snow accumulations of 4 to 8 inches above 4000 feet, with higher amounts possible in the high terrain. * WHERE...Cascades of Snohomish and Northern King Counties, Cascades of Whatcom and Skagit Counties, Olympics, Cascades of Pierce and Lewis Counties, and Cascades of Southern King County. * WHEN...Until 8 AM PDT Sunday. * IMPACTS...Late season snow showers in the mountains may impact those enjoying outdoor recreation in the mountains above 4000 feet through tonight. Warm road temperatures may limit roadway accumulations. However, temporary road accumulations will be possible in heavy snow showers. * ADDITIONAL DETAILS...Expect cold conditions in the mountains. The highest chances for heavy showers will occur this afternoon. These showers could be accompanied by lighting and small hail.
Instruction: 
Slow down and use caution while driving during or after heavy showers. Those recreating above 4000 feet should be aware of the potential for snow showers and thunderstorms. Have a plan for how to find safety and know where and how fast you can find shelter.
Area Description: 
Cascades of Whatcom and Skagit Counties; Cascades of Snohomish and Northern King Counties; Cascades of Southern King County; Cascades of Pierce and Lewis Counties; Olympics
Forcast Office: 
NWS Seattle WA
Sender: 
w-nws.webmaster@noaa.gov