Rapid Deepening A decrease in the minimum sea-level pressure of a tropical cyclone of 1.75 mb/hr or 42 mb for 24 hours.
RAPID DEEPENING - Sudden pressure drop associated with a large scale cyclone such as a tropical system or extratropical storm. Tropical systems with a pressure drop of about 1.7 Mb per hour are said to be RAPIDLY DEEPENING.
RAOBRadiosonde Observation (Upper-Air Observation)Rapid DeepeningA decrease in the minimum sea-level pressure of a tropical cyclone of 1.
Lee cyclogenesis is a multistage process involving a phase of rapid deepening followed by a transition to slower baroclinic deepening.
 See also: Air, Atmosphere, Cloud, Force, Deepening
  
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