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Storm Prediction Center Mesoscale Discussion 457

Storm Prediction Center Mesoscale Discussion 457
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Mesoscale Discussion 457
MD 457 graphic

   Mesoscale Discussion 0457
   NWS Storm Prediction Center Norman OK
   0618 PM CDT Wed Apr 15 2026

   Areas affected...North and central Texas

   Concerning...Severe Thunderstorm Watch 123...

   Valid 152318Z - 160045Z

   The severe weather threat for Severe Thunderstorm Watch 123
   continues.

   SUMMARY...Large hail and isolated wind damage threat will continue
   with storm clusters/supercells across north Texas, and additional
   cluster development is possible into central Texas (where an
   extension in area might need to be considered).

   DISCUSSION...Storms are ongoing in clusters with some embedded
   supercells along a conglomerate outflow from Stephens into Jack Cos.
    These storms are in the corridor of greatest buoyancy now, with
   gradual buoyancy decrease with eastward extent as a result of
   thicker cloud cover.  A continuation of MLCAPE of 2000-2500 J/kg
   with relatively long/straight hodographs will support supercells
   with large hail and isolated wind damage in a cluster-type mode for
   the next couple of hours, given the more SW-NE orientation of the
   dryline and storm-scale outflows.  The new updraft development
   farther southwest to near SJT could necessitate an extension to
   roughly Tom Green and Concho Cos. in the next 30 minutes.

   ..Thompson.. 04/15/2026

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

   ATTN...WFO...FWD...OUN...SJT...

   LAT...LON   33459874 33929777 33769693 33439710 32699832 31769926
               31209987 30920059 31110077 31620034 33149915 33459874 

   MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


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