Answer & Enrich Your Leaning:
Bomb Cyclone is a nickname given to a phenomenon called “bombogenesis,” in which a weather system experiences a sharp drop in atmospheric pressure and intensifies rapidly, unleashing hurricane-force winds.
- By definition, the barometric pressure must drop by at least 24 millibars in 24 hours for a storm to be called a bomb cyclone; the formation of such a storm is called bombogenesis.
- What makes a storm a “bomb” is how fast the atmospheric pressure falls; falling atmospheric pressure is a characteristic of all storms.
- These strong winter systems are notorious for packing big winds and waves to go along with heavy snow – possibly resulting in downed trees, power outages and coastal flooding.
- It happens after the pressure inside a storm cell falls so quickly that it gives the storm explosive strength.
Mechanism of Bomb Cyclone:
- Deep drops in barometric pressure occur when a region of warm air meets one of cold air. The air starts to move and the rotation of the earth creates a cyclonic effect.
- The direction is counter-clockwise in the Northern hemisphere leading to winds that come out of the northeast.