MESOSCALE DISCUSSION 0888
   NWS STORM PREDICTION CENTER NORMAN OK
   1001 AM CDT MON MAY 23 2011
   
   AREAS AFFECTED...NCNTRL AND NE TX...SW AR...NW LA
   
   CONCERNING...SEVERE POTENTIAL...WATCH NEEDED SOON 
   
   VALID 231501Z - 231530Z
   
   CORRECTED FOR WORDING
   
   A SEVERE THREAT IN NCNTRL TX SHOULD INCREASE AS STORMS MOVE EWD INTO
   THE ARKLATEX LATE THIS MORNING INTO EARLY THIS AFTERNOON. A SEVERE
   THUNDERSTORM WATCH IS CURRENTLY BEING ISSUED FOR THE AREA.
   
   A CELL IS RAPIDLY INTENSIFYING OVER HOOD COUNTY TX ALONG THE ERN
   EDGE OF STRONG INSTABILITY WITH MESOANALYSIS SHOWING MLCAPE VALUES
   ACROSS NORTHWEST AND CNTRL TX IN THE 2500 TO 3500 J/KG RANGE. IN
   ADDITION TO THE INSTABILITY...THE WSR-88D VWP AT FORT WORTH SHOWS
   ABOUT 30 KT OF DEEP LAYER SHEAR WITH SOME DIRECTIONAL SHEAR IN THE
   LOWEST 2 KM. THIS ALONG WITH VERY STEEP MID-LEVEL LAPSE RATES
   ESTIMATED TO EXCEED 9.0 C/KM ACROSS NCNTRL TX...SHOULD SUPPORT
   SUPERCELL DEVELOPMENT WITH A THREAT FOR LARGE HAIL. AN ISOLATED
   THREAT FOR 2 INCH OR GREATER DIAMETER HAILSTONES SHOULD EXIST AS THE
   STORMS BECOME INTENSE LATE THIS MORNING INTO EARLY THIS AFTERNOON.
   
   ..BROYLES.. 05/23/2011
   
   
   ATTN...WFO...SHV...FWD...OUN...
   
   LAT...LON   32449350 32059459 32009614 32029702 32129747 32369787
               33009798 33319777 33559733 33709638 33859482 33769374
               33339339 32449350