MESOSCALE DISCUSSION 0375
   NWS STORM PREDICTION CENTER NORMAN OK
   0735 PM CDT TUE APR 02 2013
   
   AREAS AFFECTED...PORTIONS OF CNTRL/SRN TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 79...
   
   VALID 030035Z - 030200Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 79
   CONTINUES.
   
   SUMMARY...THE THREAT FOR SVR STORMS CONTINUES ACROSS REMAINING VALID
   PORTIONS OF WW 79.
   
   DISCUSSION...CONVECTION ACROSS W TX HAS ORGANIZED INTO A SQUALL LINE
   THAT EXTENDS FROM THE TX BIG COUNTRY TO JUST E OF THE STOCKTON
   PLATEAU. A COLD FRONT LYING ENE TO WSW ACROSS CNTRL TX INTERSECTS
   THE SQUALL LINE 70 SSW SJT. TO THE S OF THE FRONT AND AHEAD OF THE
   SQUALL LINE...THE AIR MASS IS MODERATELY UNSTABLE...AS ILLUSTRATED
   BY THE 00Z DRT RAOB THAT INDICATES MLCAPE OVER 2000 J/KG WITHOUT ANY
   SUBSTANTIAL MLCINH. THE SOUNDING ALSO SUGGESTS AROUND 40 KT OF DEEP
   SHEAR WITH A VERTICALLY VEERING WIND PROFILE...WHICH WILL MAINTAIN A
   THREAT FOR ORGANIZED CONVECTION.
   
   SUFFICIENT FORCED ASCENT AT THE LEADING EDGE OF THE SYSTEM COLD POOL
   COUPLED WITH MODEST LOW-LEVEL INFLOW WILL MAINTAIN THE POTENTIAL FOR
   SVR WIND GUSTS AND SVR HAIL AS CONVECTION CROSSES THE RIO GRANDE
   VALLEY AND SRN EDWARDS PLATEAU. LEADING SUPERCELLS THAT DEVELOPED
   OVER THE SERRANIAS DEL BURRO WILL CONTINUE TO BE OVERTAKEN BY THE
   SRN EXTENT OF THE SQUALL LINE DURING THE NEXT HOUR OR SO...WHICH MAY
   IMPACT AREAS IMMEDIATELY S OF WW 79 AFTER 01Z. A LOCAL SPATIAL
   EXTENSION OF WW 79 TO THE S HAS BEEN COORDINATED WITH WFO EWX. N OF
   THE FRONT ACROSS THE WW AREA...MARGINALLY SVR HAIL WILL BE THE MAIN
   CONCERN WITH THE STORMS. THE SVR THREAT WILL DIMINISH FOLLOWING THE
   PASSAGE OF THE SQUALL LINE.
   
   FARTHER E...ACROSS THE TX HILL COUNTRY...STORMS ARE ADVANCING ESE OF
   WW 79 AND INTO WW 80...THOUGH UPSTREAM ACTIVITY MAY POSE A SVR
   THREAT LATER IN THE EVENING.
   
   ..COHEN.. 04/03/2013
   
   
   ATTN...WFO...HGX...FWD...CRP...EWX...SJT...MAF...
   
   LAT...LON   29740167 31070128 32040070 32009978 31719851 31579695
               30489671 29959679 29209715 28849857 28589950 28550025
               28800070 29380117 29740167