MESOSCALE DISCUSSION 0705
   NWS STORM PREDICTION CENTER NORMAN OK
   0557 PM CDT MON MAY 09 2011
   
   AREAS AFFECTED...ERN WY...NWRN NEB...SWRN SD
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 266...
   
   VALID 092257Z - 100030Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 266
   CONTINUES.
   
   LEADING EDGE OF STRONGER FORCING APPEARS TO BE SPREADING ACROSS THE
   CNTRL ROCKIES INTO THE NRN/CNTRL HIGH PLAINS REGION.  THIS
   CORRESPONDS WELL WITH ONGOING BAND OF CONVECTION THAT HAS TRAVERSED
   THE LARAMIE RANGE OF WY.  THIS ACTIVITY SHOULD GRADUALLY INCREASE IN
   AREAL COVERAGE/INTENSITY AS IT ENCOUNTERS FAVORABLE INFLOW WITHIN
   UPSLOPE FLOW REGIME INVOF THE BLACK HILLS.  LARGE HAIL IS THE
   PRIMARY SEVERE CONCERN WITH THIS EVOLVING LINE OF TSTMS...WHILE NEW
   DEVELOPMENT MAY ALSO OCCUR WITHIN WARM ADVECTION AHEAD OF THESE
   STORMS.
   
   ..DARROW.. 05/09/2011
   
   
   ATTN...WFO...LBF...UNR...CYS...
   
   LAT...LON   41650582 44830505 44830199 41640292 41650582