MESOSCALE DISCUSSION 1554
   NWS STORM PREDICTION CENTER NORMAN OK
   0609 PM CDT SAT JUL 09 2011
   
   AREAS AFFECTED...CNTRL/ERN SD
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 092309Z - 100015Z
   
   ISOLD TSTMS WILL BE POSSIBLE IN CNTRL/ERN SD THIS EVENING WITH RISKS
   FOR SVR WIND GUSTS/LARGE HAIL.  SVR POTENTIAL WILL LIKELY REMAIN TOO
   SPARSE FOR A WEATHER WATCH.
   
   VIS SATL SHOWS TCU SPROUTING ALONG A COLD FRONT AND OUTFLOW BOUNDARY
   INTERSECTION FROM NE-S OF KPIR AT 23Z.  DOWNSTREAM AIR MASS IS
   VIRTUALLY VOID OF SFC-BASED CU...LIKELY SUPPRESSED AND CAPPED IN
   WAKE OF EARLY DAY MID-LVL SPEED MAX.  THUS...EXPECT THAT ANY STORM
   THAT FORMS VCNTY THE MO RVR IN CNTRL SD WILL QUICKLY DIMINISH AS
   THEY MOVE OFF THE BOUNDARY AND BEGIN INGESTING PARCELS CONTAINING
   MORE INHIBITION E OF THE RIVER.  STILL...ANY STORM THAT FORMS COULD
   BRIEFLY BECOME STG-SVR WITH DMGG WINDS/LARGE HAIL IN THE NARROW
   CORRIDOR ALONG THE MO RVR FROM WINNER TO PIERRE AND VCNTY THE COLD
   FRONT FROM PIERRE NE TOWARD ABERDEEN.
   
   ..RACY.. 07/09/2011
   
   
   ATTN...WFO...FSD...ABR...UNR...
   
   LAT...LON   43060006 43280024 43590045 44020059 44410062 44760019
               45199967 45649879 45909847 45689807 45279792 44739775
               44219772 43749776 43259796 43139808 43079832 43060006