Explosive cyclogenesis
（重定向自Weather bomb）
Explosive cyclogenesis (also referred to as a weather bomb, meteorological bomb, explosive development, or bombogenesis) refers in a strict sense to a rapidly deepening extratropical cyclonic low-pressure area. To enter this category, the central pressure of a depression at 60˚ latitude is required to decrease by 24 mb (hPa) or more in 24 hours.