Two powerful storms are set to unleash torrents of rain and snow on the western half of the U.S. as millions of Americans travel ahead of the Thanksgiving holiday Wednesday.

A “bomb cyclone” is wreaking havoc on the West Coast, bringing with it 100 mph (160 kph) winds and blizzard conditions. It slammed into the Pacific Northwest late Tuesday night, dumping several feet of snow in some locations.

The National Weather Service (NWS) predicted snow showers and gusty winds would continue throughout the day near Seattle, Washington Wednesday, cautioning residents to “plan for a few travel impacts.”

Read more: US: 2 big pre-Thanksgiving storms hitting west, midwest