MESOSCALE DISCUSSION 1265
   NWS STORM PREDICTION CENTER NORMAN OK
   0451 PM CDT FRI JUN 17 2011
   
   AREAS AFFECTED...EASTERN DAKOTAS/WESTERN MN
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 172151Z - 172315Z
   
   AT LEAST AN ISOLATED SEVERE THREAT MAY DEVELOP OVER THE NEXT FEW
   HOURS ACROSS EASTERN PORTIONS OF THE DAKOTAS INTO WESTERN MN. SEVERE
   HAIL/WINDS WILL BE POSSIBLE...AND AN ISOLATED TORNADO CANNOT BE
   RULED OUT.
   
   VISIBLE SATELLITE IMAGERY REFLECT DEEPENING CU FIELD/INCIPIENT TSTM
   DEVELOPMENT IN VICINITY OF AN ARCING COLD FRONT FROM
   EAST-CENTRAL/SOUTHEAST ND INTO EASTERN SD OVER THE PAST HOUR. WITH A
   RELATIVELY NARROW/MODERATELY UNSTABLE INSTABILITY AXIS IN PLACE
   AHEAD OF THE COLD FRONT AMID 60S F SURFACE DEWPOINTS...AT LEAST
   GLANCING LARGE SCALE FORCING FOR ASCENT /VIA A NORTHERN HIGH PLAINS
   SHORTWAVE TROUGH/ WILL LIKELY LEAD TO ADDITIONAL DEEP CONVECTIVE
   DEVELOPMENT OVER THE NEXT FEW HOURS. WHILE THE STRONGER WINDS ALOFT
   LAG THE COLD FRONT TO THE WEST PER REGIONAL PROFILERS/WSR-88D
   VWPS...SUFFICIENTLY FAVORABLE VERTICAL SHEAR IN VICINITY OF THE COLD
   FRONT /AND ADJACENT WARM FRONT EXTENDING INTO MN/ WOULD SUPPORT SOME
   ORGANIZED/SUPERCELL STRUCTURES WITH SEVERE HAIL/WINDS POSSIBLE...AND
   PERHAPS A BRIEF TORNADO.
   
   ..GUYER.. 06/17/2011
   
   
   ATTN...WFO...MPX...FGF...FSD...ABR...BIS...
   
   LAT...LON   44519776 45519808 47339956 47099611 45119522 44499649
               44519776