Flhurricane.com - Central Florida Hurricane Center - Tracking Storms since 199531 Years of Hurricanes Without the Hype - Since 1995

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THIS STRUCTURE IS MORE CHARACTERISTIC OF AN EXTRA-TROPICAL WEATHER
SYSTEM. HOWEVER...THERE IS STILL THE POTENTIAL FOR THIS SYSTEM TO
BECOME A TROPICAL OR SUBTROPICAL CYCLONE TONIGHT OR THURSDAY

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Could somebody please point me to a good (basic) definition of what a system needs to do to be considered extratropical, subtropical or tropical? Alternatively (or in addition) I would be interested in reading up on the kind of systems out there so maybe you could point me to a text available on the Internet which would provide an introduction to this topic for a layman?

Many thanks!

VS

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Charley(eyewall), Ivan, Jeanne, Dennis, Wilma, Irma, Ian (eyewall), Nicole, Helene, Milton

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