Rapid deepening

Rapid deepening is a condition that happens when the minimum sea-level atmospheric pressure of a tropical cyclone goes down at lot very quickly. The National Weather Service describes rapid deepening as a decrease of 42 millibars in less than 24 hours.[1] However, this phrase is usually applied to most storms that are quickly becoming stronger.

Hurricane Charley nearing landfall on Florida after its rapid deepening phase.

References
  1. National Hurricane Center (January 17, 2006). "Glossary of NHC/TPC Terms". NOAA. Retrieved 2006-06-07.


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