A “once in a decade” bomb cyclone pummeled the Pacific Northwest on early Wednesday, with southern Canada and Washington, Oregon and California experiencing wind speeds as high as 101 mph (163 km/hr), torrential rain and heavy mountain snow.

At least one person has died and hundreds of thousands are are without power Wednesday as a powerful bomb cyclone approached the Pacific Northwest and Northern California, causing high winds and heavy rain and snow.

A bomb cyclone and an atmospheric river will continue lashing the Pacific Northwest with severe weather conditions, the National Weather Service said.