MESOSCALE DISCUSSION 0677
   NWS STORM PREDICTION CENTER NORMAN OK
   0730 PM CDT SAT MAY 02 2009
   
   AREAS AFFECTED...N/CNTRL MS AND AL
   
   CONCERNING...TORNADO WATCH 227...
   
   VALID 030030Z - 030130Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 227 CONTINUES.
   
   TORNADO THREAT CONTINUES ACROSS MUCH OF THE WATCH AREA...WITH DMGG
   WINDS AND LARGE HAIL LIKELY AS WELL. NRN COUNTIES IN THE WATCH IN
   MORE STABLE/RAIN COOLED AIR HAVE BEEN CLEARED.
   
   A BAROCLINIC ZONE/PSEUDO WARM FRONT HAS STRENGTHENED AS CONVECTION
   CONTINUES TO DEVELOP ALONG REMNANT OUTFLOW BOUNDARIES. COOL/MOIST
   AIR TO THE N HAS SOMEWHAT STABILIZED NRN PORTIONS OF THE
   WATCH...WHILE MOIST/HIGHER THETA E AIR EXISTS TO THE S OF THE
   BOUNDARY. SUPERCELLULAR STRUCTURES/ROTATION HAVE BEEN OBSERVED ON
   RADAR...WITH LARGE HAIL/DMGG WINDS AND ISOLD TORNADOES LIKELY AS
   DISCRETE CELLS CONTINUE TO DEVELOP ALONG THE BOUNDARY. 00Z BMX AND
   JAN SOUNDINGS REFLECT STRENGTHENING WIND FIELDS IN RESPONSE TO AN
   UPSTREAM TROUGH...AND GIVEN OBSERVED SBCAPE NEAR 2000 J/KG AND STEEP
   LOW/MID LEVEL LAPSE RATES...EXPECT THREAT OF SEVERE STORMS TO
   CONTINUE. A NEW WW WILL LIKELY BE REQUIRED TO EXTEND THE THREAT
   BEYOND 02Z.
   
   ..HURLBUT.. 05/03/2009
   
   
   ATTN...WFO...BMX...HUN...MEG...JAN...LZK...
   
   LAT...LON   32349105 34049108 34448719 34248575 33278561 32349105