MESOSCALE DISCUSSION 0943
   NWS STORM PREDICTION CENTER NORMAN OK
   0742 PM CDT WED JUN 03 2009
   
   AREAS AFFECTED...SOUTH TX
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 040042Z - 040215Z
   
   THE SEVERE THREAT WITH A CLUSTER OF THUNDERSTORMS ACROSS SOUTH TX
   WILL LIKELY CONTINUE FOR 1-2 MORE HOURS. HAIL AND ISOLATED DAMAGING
   WIND GUSTS WILL BE POSSIBLE AS THE STORMS MOVE TOWARD THE
   BROWNSVILLE AND MCALLEN AREAS.
   
   A CLUSTER OF STRONG TO SEVERE THUNDERSTORMS ONGOING ALONG AN AXIS OF
   MODERATE INSTABILITY IS LOCATED JUST WEST OF BROWNSVILLE. THE LATEST
   WSR-88S VWPS IN THIS REGION SHOW STRONGLY BACKED WINDS WITH HEIGHT
   WHICH IS CREATING ENOUGH VERTICAL SHEAR FOR ROTATING THUNDERSTORMS.
   THE ENVIRONMENT IS VERY UNSTABLE WITH SFC DEWPOINTS  NEAR 70 F AND
   0-3 KM LAPSE RATES EXCEEDING 8.0 C/KM ACCORDING TO THE RUC. THIS
   SHOULD BE SUFFICIENT FOR ISOLATED DAMAGING WIND GUSTS. THE BOWING
   LINE SEGMENT IN NRN HIDALGO COUNTY APPEARS TO HAVE THE GREATEST
   POTENTIAL FOR DAMAGING WIND GUSTS EARLY THIS EVENING. IN
   ADDITION...MID-LEVEL LAPSE RATES ON FORECAST SOUNDINGS APPEAR STEEP
   ENOUGH FOR A HAIL THREAT AS WELL.
   
   ..BROYLES.. 06/04/2009
   
   
   ATTN...WFO...CRP...BRO...
   
   LAT...LON   25799724 25809823 26279908 27099955 27459949 27599857
               27509724 26939723 26239706 25799724