The storm, driven by the season’s first major atmospheric river, inundated the region, killing at least three people and causing widespread power outages.

A second powerful wind storm, called a “bomb cyclone,” will hit the Pacific Northwest by this evening, even as hundreds of thousands of people remain without power from the torrential rain and snow still falling from the first one.

Storm Bert is battering Devon and Cornwall with flood warnings in place, fallen trees across the region and many properties without power. The Environment Agency has issued 13 flood warnings and 33 flood alerts for Devon, and 15 flood alerts for Cornwall.

Tens of thousands of homes, farms and businesses in Ireland suffered power outages due to Storm Bert on Saturday, while some rail lines and roads were closed in Britain due to what forecasters called a "multi-hazard event".