MESOSCALE DISCUSSION 0545
   NWS STORM PREDICTION CENTER NORMAN OK
   0759 PM CDT THU APR 03 2008
   
   AREAS AFFECTED...THE SERN HALF OF OK...N TX...AND WRN AND CENTRAL AR
   
   CONCERNING...TORNADO WATCH 153...154...156...
   
   VALID 040059Z - 040230Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH
   153...154...156...CONTINUES.
   
   WHILE WIDESPREAD STORMS AND AN ASSOCIATED SEVERE THREAT WILL
   CONTINUE...TORNADO THREAT SHOULD CONTINUE TO DECREASE.  NEW SEVERE
   THUNDERSTORM WATCH IS BEING CONSIDERED...TO REPLACE WW
   153...154...AND 156.
   
   STRONG/SEVERE THUNDERSTORMS CONTINUE ALONG AND AHEAD OF SEWD-MOVING
   COLD FRONT...FROM SWRN OK/N TX ENEWD INTO AR/SRN MO.  WITH STEEP
   LAPSE RATES ALOFT DEPICTED ACROSS THIS REGION AND LOW-LEVEL THETA-E
   ADVECTION TO CONTINUE AS LOW-LEVEL JET INCREASES...THERMODYNAMIC
   ENVIRONMENT WILL CONTINUE TO SUPPORT CONVECTION.
   
   STORMS SHOULD PERSIST FOR SEVERAL HOURS...THE MAJORITY OF WHICH
   SHOULD BECOME SLIGHTLY-ELEVATED WITH TIME.  WITH SHEAR EXPECTED TO
   REMAIN SUPPORTIVE OF ORGANIZATION/ROTATION...SEVERE THREAT --
   PRIMARILY IN THE FORM OF HAIL -- IS LIKEWISE FORECAST TO PERSIST. 
   WITH TORNADO THREAT LIKELY TO CONTINUE DECREASING...LARGE
   REPLACEMENT SEVERE WATCH IS BEING CONTEMPLATED.
   
   ..GOSS.. 04/04/2008
   
   
   ATTN...WFO...MEG...LZK...SHV...TSA...FWD...OUN...
   
   33229786 34499898 36359510 36369153 35629112 35039119
   33779159 32629601