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Mesoscale Discussion 150
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   Mesoscale Discussion 0150
   NWS Storm Prediction Center Norman OK
   0745 PM CDT Mon Mar 19 2018

   Areas affected...Parts of northern and central GA

   Concerning...Severe potential...Tornado Watch likely 

   Valid 200045Z - 200145Z

   Probability of Watch Issuance...95 percent

   SUMMARY...Cluster of supercells in northeast AL will spread
   east-southeastward into GA the next several hours.  Isolated
   tornadoes, large hail, and damaging winds will be possible well into
   the overnight hours.

   DISCUSSION...A cluster of long-lived supercells is now approaching
   northeast AL, in close proximity to the surface warm front, and just
   in advance of a mesolow.  Some northward advection of mid-upper 60s
   boundary layer dewpoints will occur in advance of the
   cluster/mesolow, resulting in some low-level destabilization farther
   northeast in GA tonight.  This low-level moistening/destabilization
   will help maintain the AL storm cluster, and a continuation of
   strong low-level and deep-layer vertical shear will maintain the
   threat for embedded supercells and bowing segments within the
   cluster.  Isolated tornadoes, large hail, and damaging winds will
   all be possible through at least 06z, necessitating the need for a
   new tornado watch into GA by 0100-0130z.

   ..Thompson/Dial.. 03/20/2018

   ...Please see for graphic product...


   LAT...LON   34648503 34108412 33548257 32848247 32558278 32538354
               32998473 33378528 34178547 34558543 34648503 

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