MESOSCALE DISCUSSION 0701
   NWS STORM PREDICTION CENTER NORMAN OK
   0506 PM CDT SUN MAY 08 2011
   
   AREAS AFFECTED...NCNTRL NEB TO SCNTRL ND
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 082206Z - 082300Z
   
   CU FIELD IS GRADUALLY EXPANDING/DEEPENING WITHIN POST DRYLINE
   ENVIRONMENT ACROSS THE NEB PANHANDLE.  THIS CONVECTION IS INDICATIVE
   OF THE VERY STEEP LAPSE RATES IN PLACE ACROSS THE CNTRL HIGH PLAINS
   WHERE SFC TEMPERATURES HAVE WARMED INTO THE MID 80S.  LATEST
   THINKING IS SUSTAINED CONVERGENCE ALONG THE DRYLINE SHOULD PROVE
   FAVORABLE FOR ENCOURAGING SUSTAINED DEEP UPDRAFTS/TSTMS BY 00Z-02Z. 
   GIVEN THE VERY UNSTABLE AIRMASS IN PLACE ANY STORMS THAT DEVELOP
   WILL LIKELY PRODUCE VERY LARGE HAIL...IN ADDITION TO ISOLATED
   TORNADOES WITH EARLY SUPERCELL ACTIVITY.
   
   ..DARROW.. 05/08/2011
   
   
   ATTN...WFO...FSD...ABR...BIS...LBF...UNR...
   
   LAT...LON   42480138 44470211 46600135 46039925 42279897 42480138