MESOSCALE DISCUSSION 1041
   NWS STORM PREDICTION CENTER NORMAN OK
   0322 PM CDT TUE JUN 17 2014

   AREAS AFFECTED...NERN WY...WRN SD...SWRN ND...SERN/E-CNTRL MT...NEB
   PANHANDLE

   CONCERNING...TORNADO WATCH 311...

   VALID 172022Z - 172215Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 311 CONTINUES.

   SUMMARY...SEVERE WEATHER THREAT CONTINUES ACROSS WW 311 WITH SOME
   ISOLATED SEVERE THREAT EXTENDING S OF THE WATCH INTO THE NEB
   PANHANDLE.

   DISCUSSION...RECENT RADAR IMAGERY SHOWS SEVERAL SUPERCELLS HAVE
   DEVELOPED IN E-CNTRL MT. TSTM COVERAGE WILL CONTINUE TO INCREASE
   OVER THE NEXT FEW HOURS...PARTICULARLY ACROSS SE MT SEWD TOWARDS THE
   NEB PANHANDLE...AS LARGE-SCALE LIFT AND CONVERGENCE ALONG THE
   FRONTAL BOUNDARY PERSIST. THE ENVIRONMENT REMAINS MODERATELY
   UNSTABLE WITH BULK SHEAR EXPECTED TO GRADUALLY INCREASE AS THE UPPER
   LOW OVER ID CONTINUES TO DRIFT EWD. AS SUCH...SUPERCELLS CAPABLE OF
   LARGE HAIL...DAMAGING WINDS...AND TORNADOES REMAIN POSSIBLE. 

   ADDITIONALLY...AN ISOLATED SUPERCELL IS POSSIBLE S OF THE WATCH /SW
   SD...NEB PANHANDLE/. COVERAGE IS EXPECTED TO REMAIN ISOLATED...WHICH
   WOULD PRECLUDE THE NEED FOR A WW...BUT TRENDS ACROSS THE AREA WILL
   BE MONITORED.

   ..MOSIER.. 06/17/2014


   ATTN...WFO...BIS...LBF...UNR...CYS...BYZ...GGW...

   LAT...LON   47170619 47940651 48310532 47640362 43640136 41350231
               41100378 42920386 44450439 47170619