Rich B
(British Meteorologist)
Fri Nov 18 2005 05:21 PM
Re: Tropical Storm Gamma forms near Honduras

Margie:

Tropical Cyclone:
A warm-core non-frontal synoptic-scale cyclone, originating over tropical or subtropical waters, with organized deep convection and a closed surface wind circulation about a well-defined center.

The above is taken from the NHC Glossary. You may recall that when recon confirmed that TD 27 has initially developed there was also no vortex message. However, to be classified as a Tropical Cyclone there must be a closed surface circulation.

Regards