cieldumort
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Re: Subtropical Storm Gabrielle Forms Southeast of the Carolinas
Sat Sep 08 2007 02:56 PM
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Looks like there have been some good questions posted on this thread that arguably relate to the topic of Gabrielle.
A lot of confusion exists, even among mets, as to the nature of sub-tropical cyclones, and debate has existed to greater or lesser degrees for decades as to whether or not to include them in the historical count, and later, whether to go ahead and draw down names from the seasonal list and apply such a formal tracking status to them.
To cover three queries - with brief answers, in the interest of my own time, and in not cluttering up the main thread:
--The cyclonic cloud motion some are talking about that is "seemingly breaking off from" Gabrielle and heading SW on route to Florida is the upper level low (TUTT low) mentioned in previous threads, and in Typhoon Tip's earlier Invest 99 thread (See main page).
--Many subtropical cyclones do go on to become fully tropical.. and go on to become hurricanes. Rarely, if ever, does a subtropical storm strengthen to even minimal hurricane-force sustained winds without having transitioned into a more purely or purely tropical cyclone. Hence, you are unlikely to ever see an official "Subtropical Hurricane (Name here)".
Subtropical cyclones do form in many basins, and at many latitudes, but as the moniker explicitly suggests, they most often form in the .. subtropics.
--Please note that Subtropical Storm Gabrielle is a Subtropical Cyclone and not an extra-tropical gale. There are very valid, technical reasons for this, and the highly-educated and skilled experts at NHC have not just somehow arbitrarily decided to draw down a name for the sake of whatever, and applied it to this system.
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