MESOSCALE DISCUSSION 1059
   NWS STORM PREDICTION CENTER NORMAN OK
   0541 PM CDT THU JUN 11 2009
   
   AREAS AFFECTED...MUCH OF NORTH/NORTHWEST AND CENTRAL TX
   
   CONCERNING...TORNADO WATCH 378...
   
   VALID 112241Z - 112345Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 378 CONTINUES.
   
   TORNADO WATCH 378 CONTINUES UNTIL 03Z. SEVERE TSTM WATCH 375 WILL
   LIKELY BE ALLOWED TO EXPIRE AS SCHEDULED AT/BY 23Z.
   
   VIRTUALLY ALL OF SEVERE TSTM WATCH 375 HAS BEEN STABILIZED IN WAKE
   OF EARLIER CONVECTION/OUTFLOW. SOME ADDITIONAL DEVELOPMENT /MAINLY
   ELEVATED/ CANNOT BE COMPLETELY RULED OUT LATER THIS EVENING...BUT
   OTHERWISE IT SEEMS THAT SEVERE TSTM WATCH 375 WILL BE ALLOWED TO
   EXPIRE AS SCHEDULED.
   
   OTHERWISE...CONTINUED SUPERCELL/TORNADO POTENTIAL WILL REMAIN
   ESPECIALLY IN VICINITY OF SURFACE TRIPLE POINT/WESTWARD MOVING
   OUTFLOW BOUNDARY. HOWEVER...THE DOMINANT SCENARIO ACROSS TORNADO
   WATCH 378 WILL BE POTENTIAL UPSCALE DEVELOPMENT OF A SOUTHWARD
   MOVING MCS ACROSS CENTRAL TX...WITH POTENTIAL FOR A STEADILY
   INCREASING DAMAGING WIND RISK ALONG WITH LARGE HAIL. THIS APPEARS TO
   ALREADY BE ONGOING NEAR/EAST OF BROWNWOOD TX AS OF 2215Z. WITH A
   VERY MOIST AND EXTREMELY UNSTABLE AIRMASS TO THE SOUTH /4000+ J PER
   KG MLCAPE/...AND AROUND 20 KT OF STORM RELATIVE LOW LEVEL
   INFLOW...IT SEEMS PROBABLE THAT AN INCREASING DAMAGING WIND
   PRODUCING MCS MAY STEADILY INCREASE/DEVELOP GENERALLY SOUTHWARD OVER
   THE NEXT FEW HOURS ACROSS CENTRAL TX...INCLUDING AREAS NEAR/WEST OF
   THE I-35 CORRIDOR...THE HILL COUNTRY...AND POTENTIALLY I-10.
   
   ..GUYER.. 06/11/2009
   
   
   ATTN...WFO...SHV...HGX...FWD...OUN...EWX...SJT...LUB...MAF...
   
   LAT...LON   33580126 33639941 32719616 31909495 30839537 29769848
               33580126