MESOSCALE DISCUSSION 1331
   NWS STORM PREDICTION CENTER NORMAN OK
   0533 PM CDT WED JUN 11 2003
   
   AREAS AFFECTED...ERN CO/SWRN NEB/WRN KS
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 112233Z - 120000Z
   
   POTENTIAL FOR ISOLATED DAMAGING WINDS/LARGE HAIL WILL LIKELY
   INCREASE ACROSS THE AREA. CONVECTIVE TRENDS ARE BEING MONITORED FOR
   POSSIBLE WW.
   
   LATEST MESOANALYSIS SHOWED SURFACE LOW OVER SERN CO WITH INVERTED
   TROUGH AXIS THAT EXTENDED NWD ACROSS ERN CO INTO SWRN NEB NEAR IML.
   AIRMASS INVOF OF THIS TROUGH HAS BECOME MODERATELY UNSTABLE WITH
   MLCAPES OF 1000-1500 J/KG. ALOFT...REGION LIES BETWEEN BELTS OF
   STRONGER MID-LEVEL FLOW ACROSS SD/NEB AND TX/OK WITH 10-20KTS
   OBSERVED BETWEEN 4 AND 7KM ON THE GRENADA COLORADO PROFILER.
   NONETHELESS...RUC FORECAST SOUNDINGS INDICATE DEEPLY MIXED BOUNDARY
   LAYER CONDITIONS INVOF SURFACE TROUGH WITH 25-30F 
   TEMPERATURE-DEWPOINT SPREADS. THUS...IT APPEARS THAT ISOLATED
   DAMAGING DOWNBURSTS ARE POSSIBLE WITH THE STRONGEST STORMS MOVING
   OUT OF SERN CO INTO WRN KS. FARTHER N...STRONGER TSTMS OVER
   PERKINS/LINCOLN COUNTIES IN WRN/SWRN NEB WILL POSE A LARGE
   HAIL/DAMAGING WIND THREAT AS THEY MOVE ESEWD JUST S OF WW513.
   
   ..MEAD.. 06/11/2003
   
   
   ATTN...WFO...GID...LBF...DDC...GLD...PUB...BOU...
   
   38590284 39980277 40640246 40960158 40980066 40979987
   39739953 37589971 37070002 37000065 37000200 37030254
   38620284