Bomb Cyclone

Context
A powerful “bomb cyclone” barreled across the northern United States recently, triggering severe winter weather in the Midwest and the East Coast
About Bomb cyclone
Bomb cyclone is a rapidly intensifying extra-tropical (mid-latitude) cyclone
Formed through explosive cyclogenesis (bombogenesis)
Defined by a sharp fall in surface pressure within 24 hours
Pressure drop criterion: 24 mb at 60° latitude, ~17.8 mb at 40° latitude
Has a low-pressure center drawing strong inward winds
Commonly forms in winter due to cold–warm air mass interaction
Often associated with atmospheric rivers
Causes blizzards, heavy snow/rain, thunderstorms, and strong winds
Most active in North Atlantic, Northwest Pacific, Southwest Pacific, South Atlantic