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Mesoscale Discussion 89
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   Mesoscale Discussion 0089
   NWS Storm Prediction Center Norman OK
   0850 AM CST Thu Feb 06 2020

   Areas affected...northeast Georgia...western South Carolina and
   central North Carolina

   Concerning...Severe potential...Watch likely 

   Valid 061450Z - 061545Z

   Probability of Watch Issuance...95 percent

   SUMMARY...The threat for damaging wind and isolated tornadoes is
   expected to increase this morning and persist into the afternoon
   over a portion of the Carolinas. A tornado watch will be needed
   soon.

   DISCUSSION...The low-level jet will continue to strengthen to in
   excess of 60 kt, supporting low-level theta-advection and
   destabilization of the warm sector downstream from a line of
   thunderstorms that currently extends from southwestern NC into
   western SC and northeast GA. MLCAPE will likely increase to around
   500 J/kg as temperatures and dewpoints slowly rise through the 60s
   F. Winds aloft will remain mostly parallel to the convective line,
   suggesting a relatively slow eastward advance compared to the rapid
   northeast movement of cells or bowing segments within the line. VWP
   data already show large low-level hodographs with 0-1 km storm
   relative helicity from 300-400 m2/s2. Despite the linear nature of
   the storms, isolated tornadoes will be possible with embedded
   supercells or meso-vortices. Otherwise damaging wind should remain
   the primary threat.

   ..Dial/Hart.. 02/06/2020

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

   ATTN...WFO...RAH...ILM...CAE...GSP...FFC...

   LAT...LON   33638354 34348320 35188209 35608156 35878050 35987933
               35567875 34617959 33358216 33638354 

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