A major storm swept across the northwest U.S. Tuesday evening, battering the region with strong winds and rain and causing widespread power outages and downed trees that killed at least one person. The Weather Prediction Center issued excessive rainfall risks through Friday and hurricane-force wind warnings were in effect as the strongest atmospheric river — a large plume of moisture — that California and the Pacific Northwest

Hundreds of thousands of people are in the dark thanks to high winds from the bomb cyclone hitting Western Washington Tuesday night.

A powerful storm is bearing down on the West Coast and bringing with it a scary-sounding weather term - bomb cyclone. Bomb cyclone is a term used by weather enthusiasts to describe a process that meteorologists usually call bombogenesis.