MESOSCALE DISCUSSION 1548
   NWS STORM PREDICTION CENTER NORMAN OK
   0522 PM CDT SUN JUL 26 2015

   AREAS AFFECTED...SOUTH-CENTRAL SD...WESTERN AND CENTRAL
   NEB...NORTHEAST CO...NORTHWEST KS

   CONCERNING...SEVERE THUNDERSTORM WATCH 454...

   VALID 262222Z - 262345Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 454
   CONTINUES.

   SUMMARY...A THREAT FOR STRONG...LOCALLY DAMAGING WIND GUSTS AND
   LARGE HAIL WILL CONTINUE IN AND NEAR WATCH 454. DEPENDING ON TRENDS
   AS THESE STORMS TRACK EASTWARD INTO A SLIGHTLY MORE FAVORABLE
   ENVIRONMENT...A LOCAL WATCH EXTENSION IN TIME AND SPACE AND/OR A NEW
   WATCH ISSUANCE MAY BE NEEDED ACROSS PARTS OF CENTRAL NEB AND
   NORTHWEST KS.

   DISCUSSION...STORMS ACROSS NORTHEAST CO INTO WESTERN NEB REMAIN
   LOOSELY ORGANIZED IN THUNDERSTORMS CLUSTERS. DESPITE STORMS
   STRUGGLING TO ORGANIZE...A PEAK WIND GUSTS OF 62 KT WAS MEASURED
   WITHIN THE LAST HOUR AT KSNY IN NEB. AS STORMS CONTINUE TO TRACK
   EASTWARD THE ENVIRONMENT DOES BECOME MORE FAVORABLE WITH EFFECTIVE
   SHEAR INCREASING TO NEAR 40 KT. STORMS JUST OUTSIDE OF THE WATCH BOX
   ACROSS SOUTH-CENTRAL SD ARE EVIDENCE OF THIS BETTER SHEAR AND
   STRONGER LOW LEVEL CONFLUENCE NEAR THE WARM FRONTAL BOUNDARY. THESE
   STORMS...ALONG WITH THOSE FURTHER SOUTH ALONG THE SURFACE
   TROUGH...WILL CONTINUE TO POSE A STRONG WIND AND HAIL THREAT. SHOULD
   UPSCALE GROWTH OCCUR ACROSS WESTERN NEB AND NORTHEAST CO...A LOCAL
   EXTENSION IN TIME/SPACE OR NEW WATCH ISSUANCE MAY BE NEEDED INTO
   PARTS OF CENTRAL NEB AND NORTHWEST KS.

   ..LEITMAN/HART.. 07/26/2015


   ATTN...WFO...FSD...ABR...GID...LBF...DDC...UNR...GLD...PUB...
   BOU...CYS...

   LAT...LON   41120398 42760277 43460230 44190175 44130031 43939959
               43519923 42879922 41519995 39740059 38680099 38540264
               38570395 41120398