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

The Northwest is bracing for a strong storm system to move in this week, fueled by an atmospheric river​ and bomb cyclone. What do those terms mean?

A powerful storm system will bring heavy mountain snowfall, rain, and high winds to the Pacific Northwest and Northern California through midweek. Numerous flash floods, hazardous travel, power outages,