garyb
(Weather Guru)
Fri May 31 2002 02:44 PM
Just a refresher

Tropical Disturbance:
A discrete tropical weather system of apparently organized convection--generally 100 to 300 nmi in diameter---originating in the tropics or subtropics, having a nonfrontal migratory character, and maintaining its identity for 24 hours or more. It may or may not be associated with a detectable perturbation of the wind field.



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