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

A bomb cyclone fueled by an atmospheric river will swing by the Pacific Northwest this week, bringing heavy rain and snow to the region between Tuesday night and Friday morning.

A Pacific storm is undergoing what meteorologists call bombogenesis while also hauling in an atmospheric river of moisture.

A powerful bomb cyclone associated with a major atmospheric river is forecast to blast the West Coast, from Washington to California, by midweek, packing threats of high winds, snow and rain.

A powerful bomb cyclone associated with a major atmospheric river is forecast to drench the West Coast, from Washington to California, this week and could potentially lead to life-threatening flooding and blizzard conditions.