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Mesoscale Discussion 795
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   MESOSCALE DISCUSSION 0795
   NWS STORM PREDICTION CENTER NORMAN OK
   0851 PM CDT TUE MAY 26 2015

   AREAS AFFECTED...PORTIONS NRN TX

   CONCERNING...TORNADO WATCH 222...

   VALID 270151Z - 270315Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 222 CONTINUES.

   SUMMARY...THE THREAT FOR A FEW LARGE HAIL REPORTS AND A TORNADO OR
   TWO CONTINUES OVER SERN PORTIONS OF WW 222.

   DISCUSSION...A LARGE CLUSTER OF STRONG-TO-SEVERE TSTMS /WITH
   EMBEDDED HP SUPERCELL STRUCTURES/ CONTINUES TO EVOLVE TO THE W/SW OF
   THE DFW METROPLEX THIS EVENING. THE INTERACTION OF A MERGED COLD
   POOL WITH A SFC BOUNDARY EXTENDING TO THE E/SE TOWARDS HILL CO IS
   THE APPARENT SOURCE OF ROTATION WITHIN STRONGER CORES AMONGST THIS
   CLUSTER OF CELLS. WITH DYNAMIC PRESSURE PERTURBATION FORCES LIFTING
   PARCELS TO THE LFC...THESE UPDRAFTS ARE STILL ABLE TO UTILIZE A
   PLUME OF STEEP LAPSE RATES AND AMPLE EFFECTIVE SHEAR ALOFT. AS
   SUCH...SOME POTENTIAL FOR LARGE HAIL AND A TORNADO OR TWO REMAINS
   OVER SERN SECTIONS OF WW 222 THIS EVENING. NONETHELESS...WITH
   CONTINUED CELL/COLD POOL MERGERS...BL COOLING...AND THE DEPARTURE OF
   A MID/UPPER-LEVEL IMPULSE TO THE NE...THE OVERALL THREAT SHOULD
   SLOWLY DECREASE OVER THE NEXT FEW HOURS.

   ..PICCA.. 05/27/2015


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

   LAT...LON   32659980 33689859 33849761 32789753 32189778 31919831
               31919868 32119898 32159965 32659980 

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Page last modified: May 27, 2015
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