MESOSCALE DISCUSSION 1137
   NWS STORM PREDICTION CENTER NORMAN OK
   0552 PM CDT SAT JUN 26 2010
   
   AREAS AFFECTED...ND...SD...NWRN MN
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 416...417...
   
   VALID 262252Z - 270045Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   416...417...CONTINUES.
   
   NUMEROUS POST FRONTAL STORMS PERSIST ACROSS WRN SD/ND AND THESE
   STORMS WILL CONTINUE TO POSE A SEVERE HAIL THREAT.  THE MOST
   FAVORABLE ENVIRONMENT FOR VERY LARGE HAIL CURRENTLY EXISTS FROM N
   CNTRL INTO S CNTRL SD WHERE VERY UNSTABLE AIR RESIDES AND
   TEMPERATURES ARE WARMER.  TO THE N...ANOTHER ZONE OF UNSTABLE AIR
   HAS YET TO OVERTURN ACROSS ERN ND AND PORTIONS OF NWRN MN.
   ADDITIONAL DEVELOPMENT WILL REMAIN POSSIBLE IN THESE AREAS FOR
   SEVERAL MORE HOURS AS COOLING ALOFT PERSISTS OR UNTIL THE AIR MASS
   GETS OVERTURNED. ALSO...STORMS ACROSS NWRN MN WILL FIND A BETTER LOW
   LEVEL SHEAR ENVIRONMENT COURTESY OF A N/S ORIENTED WARM FRONT.
   THUS...IN ADDITION TO HAIL...ISOLATED TORNADOES CANNOT BE RULED OUT
   HERE.
   
   ..JEWELL.. 06/26/2010
   
   
   ATTN...WFO...DLH...FGF...FSD...ABR...BIS...UNR...
   
   LAT...LON   46000326 46870304 47370269 47890173 48390064 49010022
               49029518 49389504 49389483 48759464 48719443 47409439
               47419513 47129519 47139677 46609677 46639800 45939797
               45939869 44199872 44199892 43969897 43919935 43499953
               42999948 43000257 43500231 44330219 45120226 45690275
               46000326