MESOSCALE DISCUSSION 0716
   NWS STORM PREDICTION CENTER NORMAN OK
   0916 PM CDT SAT MAY 05 2007
   
   AREAS AFFECTED...WESTERN IA...NWRN MO
   
   CONCERNING...TORNADO WATCH 235...236...237...
   
   VALID 060216Z - 060315Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH
   235...236...237...CONTINUES.
   
   HALF A DOZEN OR SO SUPERCELL STRUCTURES HAVE EVOLVED NEAR THE MO
   RIVER OVER WRN IA...LIFTING NWD WITHIN A VERY FAVORABLE ZONE OF
   ENHANCED LOW LEVEL SHEAR.  LATEST DIAGNOSTIC DATA SUGGESTS A WARM
   FRONT-TYPE BOUNDARY EXTENDS FROM SE-NW ACROSS WW237 WHICH APPEARS
   PARTLY RESPONSIBLE FOR ENHANCED SHEAR.  NEEDLESS TO SAY...TORNADO
   THREAT REMAINS HIGH WITH THESE STRUCTURES AS THEY LIFT NWD ACROSS
   WRN IA.
   
   ..DARROW.. 05/06/2007
   
   
   ATTN...WFO...DMX...EAX...FSD...OAX...
   
   40579570 40599492 41169497 41149517 41859511 41859565
   42199565 42219535 43499538 43499396 42219391 42199370
   41869370 41859380 41169381 41159359 40579359 40579379
   40129376 40109505 39849506 40229547