The story
Blend of bomb (“from exploding like a bomb onto the scene, in the generation of a storm”) + cyclogenesis. Can also be analyzed as bomb + -o- + -genesis.
Etymology from Wiktionary, CC BY-SA 4.0.
bombogenesis
Today it means: Rapid or extreme cyclogenesis, often characterized by a barometric pressure drop of 24 millibars in a 24 hour period. Full definition →