SEATTLE (AP) — A major storm swept across the northwest U.S., battering the region with strong winds and rain, causing widespread power outages and downing trees that killed at least one person.

A deadly “ bomb cyclone ” has ripped through Washington state, killing at least one person, downing trees and power lines, and leaving hundreds of thousands without power.

At least one person is dead and hundreds of thousands of were without power early Wednesday as a powerful bomb cyclone hit the Pacific Northwest and northern California.

A powerful winter storm brewing near the Pacific Northwest known as a bomb cyclone is dragging an atmospheric river.

Northern California is expecting heavy rain from a "bomb cyclone." The term pops up from time to time in weather stories. But what does it mean?

"We’ve only seen a couple storms that have really been this strong," the director of the Oregon Climate Service said.

A powerful bomb cyclone will slam Washington, including Seattle, through parts of California. The West also faces High Wind Warnings associated with this major atmospheric river that'll bring flooding rain and feet of snow to the mountains.