25th Conference on Hurricanes and Tropical Meteorology


A fifty year history of subtropical cyclones

David M. Roth, Hydrometeorological Prediction Center, Camp Springs, MD

Research on subtropical cyclones in the Atlantic Basin began fifty years ago, and has continued in broken steps ever since. This presentation will go into the history of the research on this cyclones, as well as new research and a climatology being prepared by the author on storms from 1951 to present. This new research would have been much harder to prepare without the inclusion of many of these storms into the NHC "smooth track" database.

An average of 4-5 subtropical cyclones form in the Atlantic Basin annually, with the extremes of 1989 (0) and 2000 (12). Their distribution, areas of formation/processes of formation, and intensities over the 50 year period will be addressed, as well as their designation by the author, which as much as possible should reflect the concepts and structure set forth in the original Hebert-Poteat paper of 1975.

extended abstract  Extended Abstract (1.5M)

Poster Session 1, Tropical Cyclones, Large-scale Dynamics and Convection
Monday, 29 April 2002, 11:00 AM-12:30 PM

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