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Mesoscale Discussion 1638
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   Mesoscale Discussion 1638
   NWS Storm Prediction Center Norman OK
   0201 PM CDT Sun Sep 10 2017

   Areas affected...Florida and far southeast Georgia

   Concerning...Tornado Watch 483...

   Valid 101901Z - 102100Z

   The severe weather threat for Tornado Watch 483 continues.

   SUMMARY...Risk for tornadoes continues, with greatest risk currently
   across the central third of Florida.

   DISCUSSION...Latest radar loop shows the center of Hurricane Irma
   near the Florida Gulf Coast just south of Naples.  North/northeast
   of the center, stronger convective cells continue moving
   west/northwest across the peninsula within broader-scale convective
   bands.  Very strong low-level shear continues to foster low-level
   rotation within several of the stronger cells, with most numerous
   rotating cells continuing off the east-central Florida Atlantic
   Coast.  These rotating cells have periodically moved inland, and
   will continue to do so over the next several hours -- accompanied by
   risk for brief tornadoes.  Risk will gradually expand/spread
   northward with time in conjunction with the advance of Irma.

   ..Goss.. 09/10/2017

   ...Please see for graphic product...


   LAT...LON   26288188 26408250 26898278 29258326 29968318 31278198
               31338103 30257998 27767943 26737947 26528021 26558148

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