MESOSCALE DISCUSSION 0655
   NWS STORM PREDICTION CENTER NORMAN OK
   0122 PM CDT FRI MAY 01 2009
   
   AREAS AFFECTED...NERN OK...NWRN AR
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 220...
   
   VALID 011822Z - 011915Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 220
   CONTINUES.
   
   MCS HAS STRUGGLED TO MAINTAIN INTENSITY ACROSS THE QUAD-STATE REGION
   OF KS/MO/OK/AR...THOUGH A FEW ROGUE UPDRAFTS HAVE EXHIBITED
   STRONG/SEVERE CHARACTERISTICS AT TIMES...ESPECIALLY ALONG WRN/SRN
   FRINGES OF CONVECTIVE SYSTEM.  WITH LLJ VEERING AND DECREASING
   ACROSS THIS REGION IT APPEARS WEAK ISENTROPIC ASCENT WILL CONTINUE
   TO AID ELEVATED CONVECTIVE THREAT ON COOL SIDE OF BOUNDARY.  UNLESS
   OVERALL CHARACTER OF THIS THUNDERSTORM CLUSTER INTENSIFIES A NEW WW
   WILL NOT BE ISSUED FOR THIS ACTIVITY.  WILL CONTINUE TO CLOSELY
   MONITOR TRAILING FRONTAL ZONE ACROSS SWRN OK/NWRN TX WHERE SEVERE
   THUNDERSTORMS SHOULD DEVELOP LATER THIS AFTERNOON.
   
   ..DARROW.. 05/01/2009
   
   
   ATTN...WFO...LZK...SHV...TSA...OUN...
   
   LAT...LON   36869789 35889345 34139347 35129790 36869789