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Mesoscale Discussion 317
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   MESOSCALE DISCUSSION 0317
   NWS STORM PREDICTION CENTER NORMAN OK
   0506 PM CDT THU APR 16 2015

   AREAS AFFECTED...PORTIONS OF THE OK AND TX PANHANDLES

   CONCERNING...TORNADO WATCH 59...

   VALID 162206Z - 162330Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 59 CONTINUES.

   SUMMARY...THE RISK FOR SVR TSTMS CONTINUES ACROSS TORNADO WATCH 59.

   DISCUSSION...A CLUSTER OF INTENSE STORMS INCLUDING EMBEDDED
   SUPERCELLS CONTINUES SPREADING EWD INTO THE ERN TX PANHANDLE. THE
   SRN EXTENT OF THIS CLUSTER IS MOVING INTO GRAY COUNTY WITH
   ASSOCIATED INFLOW LARGELY UNPERTURBED...AND WILL POSSESS THE
   GREATEST POTENTIAL FOR LARGE HAIL AND POSSIBLY A TORNADO AS IT
   SPREADS EWD. THE PRESENCE OF A VERTICALLY VEERING PROFILE AND 40-50
   KT MID-LEVEL SLYS SAMPLED BY THE AMA VWP SUGGEST SUSTAINED/ORGANIZED
   CONVECTIVE MODES PERSISTING INTO THE EVENING. WITH SOME INCREASE IN
   THE LOW-LEVEL FLOW WITH THE NOCTURNAL BOUNDARY-LAYER WIND MAX
   INTENSIFICATION...STRENGTHENING LOW-LEVEL SHEAR MAY SUPPORT SOME
   INCREASE IN THE TORNADO POTENTIAL DURING THE NEXT FEW HOURS WITH ANY
   MORE SEPARATE UPDRAFTS.

   ..COHEN.. 04/16/2015


   ATTN...WFO...OUN...DDC...AMA...

   LAT...LON   34750000 34750159 34750162 36500202 36580202 36840202
               36990202 36990200 37000055 37000019 37000012 37000001
               37000000 36500000 35180000 34970000 34750000 34750000
               34750000 

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Page last modified: April 16, 2015
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