MESOSCALE DISCUSSION 1354
   NWS STORM PREDICTION CENTER NORMAN OK
   0354 AM CDT WED JUN 22 2011
   
   AREAS AFFECTED...S TX TO SERN TX AND THE TX GULF COAST
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 537...
   
   VALID 220854Z - 221000Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 537
   CONTINUES.
   
   AN ISOLATED STRONGER WIND GUST COULD OCCUR ATTENDANT TO THE NRN
   EXTENT OF A LINE OF STORMS MOVING THROUGH THE NERN PART OF WW
   537...GENERALLY NW-N OF THE HOUSTON METRO AREA.  HOWEVER...AN
   OVERALL SLOWER SEWD AND SWD ADVANCEMENT OF THIS LINE OF STORMS
   DURING THE LAST 1-2 HOURS SUGGESTS THE THREAT FOR DAMAGING WINDS IS
   GREATLY REDUCED SINCE THE TIME OF INITIAL WATCH ISSUANCE.
   
   REGIONAL RADAR TRENDS INDICATED A SSEWD MOVEMENT AT 15 KT ALONG THE
   SRN EXTENT OF THE LINE MOVING INTO S TX...WHILE THE NRN EXTENT
   MOVING INTO AREAS NW-N OF HOUSTON METRO AREA IS ADVANCING ESEWD AT
   20 KT.  RESIDUAL MODERATE INSTABILITY LOCATED ALONG AND DOWNSTREAM
   OF THE LEADING EDGE OF THE MCS AND COLD POOL DYNAMICS WILL SUSTAIN
   ACTIVITY INTO THE MORNING.  HOWEVER...THE OVERALL SLOWER MOVEMENT
   SHOULD CONTINUE TO LIMIT THE THREAT FOR DAMAGING WINDS AS THE MCS
   ADVANCES TOWARD THE TX COAST.
   
   ..PETERS.. 06/22/2011
   
   
   ATTN...WFO...LCH...SHV...HGX...CRP...EWX...
   
   LAT...LON   28249783 27769924 28229980 28519890 28819879 28759800
               28889738 29399668 29949686 30509644 30809611 30959530
               31189483 30519444 29149666 28249783