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Mesoscale Discussion 160
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MD 160 graphic

   Mesoscale Discussion 0160
   NWS Storm Prediction Center Norman OK
   1200 PM CDT Tue Mar 20 2018

   Areas affected...Northern/Central FL...Southeast GA

   Concerning...Tornado Watch 17...

   Valid 201700Z - 201800Z

   The severe weather threat for Tornado Watch 17 continues.

   SUMMARY...Tornado threat continues across the entire region.

   DISCUSSION...Large-scale forcing ahead of progressive short-wave
   trough appears to be aiding recent upscale growth in convection
   across the northeast Gulf. Radar data suggests several longer-lived
   supercells are offshore with the back edge roughly 100mi southwest
   of CTY extending to roughly 150mi west of TPA. While earlier
   supercell activity over land has since diminished/moved offshore, it
   appears an upward trend in convection will be noted across ww17 over
   the next few hours as influence of the short wave begins to
   overspread the northern Peninsula.  15z XMR sounding exhibited
   substantial SBCAPE with fairly steep mid-level lapse rates (7.8 C/km
   between 3-6km), supportive of robust updrafts given the approaching
   trough.

   ..Darrow.. 03/20/2018

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...MLB...TBW...JAX...TAE...

   LAT...LON   27188305 30588383 31068138 27708065 27188305 

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Page last modified: March 20, 2018
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