Sometimes a particularly strong winter storm is called a "bomb," having undergone bombogenesis
in which the storm system strengthens very rapidly.
The storm was powered by a rapid plunge in barometric pressure that some weather forecasters were referring to as bombogenesis or a "bomb cyclone" and which brought fast, heavy snowfall and high winds.
The bombogenesis phenomenon occurs when a storm's barometric pressure drops 24 millibars in 24 hours.
For winter storm Stella to undergo bombogenesis
, or to be considered a weather bomb, the central pressure of the system would have to drop 24 millibars within 24 hours.
Once the warm, tropical air crashes into mountain of cold air, a violent explosion of meteorological energy will occur called bombogenesis