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Mesoscale Discussion 327
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   MESOSCALE DISCUSSION 0327
   NWS STORM PREDICTION CENTER NORMAN OK
   0856 PM CDT THU APR 16 2015

   AREAS AFFECTED...A SMALL PART OF THE FAR ERN TX PANHANDLE AND FAR
   WRN OK

   CONCERNING...TORNADO WATCH 59...64...

   VALID 170156Z - 170330Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 59...64...CONTINUES.

   SUMMARY...THE RISK FOR SVR TSTMS INCLUDING TORNADOES CONTINUES
   ACROSS REMAINING VALID PORTIONS OF TORNADO WATCHES 59 AND 64.

   DISCUSSION...RADAR LOOPS INDICATE ONGOING INTENSE CONVECTIVE
   CLUSTERS FROM WHEELER COUNTY TX INTO ROGER MILLS COUNTY OK...WITH
   LEADING DISCRETE CONVECTION WEAKENING IN FAR NRN BECKHAM COUNTY.
   SUPERCELL STRUCTURES EMBEDDED WITHIN THE CONVECTIVE CLUSTERS WILL
   CONTINUE TO LOCALLY ENHANCE THE TORNADO RISK...THOUGH THIS ACTIVITY
   IS TAKING ON MORE QUASI-LINEAR CHARACTERISTICS WITH TIME OWING TO
   ANTECEDENT NUMEROUS CELL INTERACTIONS. DMGG WIND GUSTS AND SVR HAIL
   ARE BECOMING PREDOMINANT RISKS. NEVERTHELESS...THE NOCTURNALLY
   DECREASING SFC TEMP-DEWPOINT SPREADS AND LOWERING LCLS...AND MARKED
   DIRECTIONAL SHEAR IN A VERTICALLY VEERING WIND PROFILE SAMPLED BY
   THE FDR VWP...SUGGEST THAT SOME TORNADO POTENTIAL REMAINS. AND
   SIMILAR TORNADO POTENTIAL WILL CONTINUE DURING THE NEXT FEW HOURS AS
   THE LLJ STRENGTHENS...THOUGH NOCTURNALLY GROWING PBL STATIC
   STABILITY MAY EVENTUALLY MITIGATE THE OVERALL SVR-TSTM/TORNADO RISK
   LATER IN THE NIGHT. IN THE MEANTIME...SVR STORMS WILL CONTINUE TO
   SLOWLY ADVANCE EWD/ENEWD ACROSS THE FAR E-CNTRL TX PANHANDLE INTO
   FAR W-CNTRL OK. LOCAL TEMPORAL EXTENSION OF TORNADO WATCH 59 MAY BE
   NECESSARY IN THE FAR ERN TX PANHANDLE IF CONVECTIVE BACKBUILDING
   WERE TO BECOME A CONCERN.

   ..COHEN.. 04/17/2015


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

   LAT...LON   35310039 35440012 35869987 35729949 35329956 35189999
               35310039 

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Page last modified: April 17, 2015
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