MESOSCALE DISCUSSION 1528
   NWS STORM PREDICTION CENTER NORMAN OK
   0926 PM CDT FRI AUG 08 2014

   AREAS AFFECTED...SOUTHWEST/CENTRAL NEB

   CONCERNING...SEVERE THUNDERSTORM WATCH 456...

   VALID 090226Z - 090400Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 456
   CONTINUES.

   SUMMARY...LARGE HAIL AND LOCALLY DAMAGING WINDS REMAIN A CONCERN
   ACROSS SOUTHWEST/CENTRAL NEB THIS EVENING...ALTHOUGH OVERALL
   CONVECTIVE INTENSITY SHOULD DIMINISH INTO LATE EVENING. SEVERE
   THUNDERSTORM WATCH 456 CONTINUES UNTIL 06Z.

   DISCUSSION...A WELL-ORGANIZED SQUALL LINE CONTINUES TO MAKE A
   GENERAL SOUTHEASTWARD PROGRESSION ACROSS CENTRAL/NORTHEAST NEB THIS
   EVENING...WITH A SOMEWHAT BROKEN CLUSTER OF STORMS ALSO SPREADING
   EASTWARD ACROSS FAR SOUTHWEST NEB AS OF 02Z. IN SOUTHWEST NEB...A 53
   KT WIND GUST WAS RECENTLY MEASURED AT IMPERIAL. ALTHOUGH THE
   BOUNDARY LAYER HAS BEGUN TO GRADUALLY COOL...THE ENVIRONMENT REMAINS
   RELATIVELY FAVORABLE FOR QUASI-LINEAR STORM PERSISTENCE THIS
   EVENING...ESPECIALLY GIVEN A STRENGTHENING OF LOW-LEVEL RELATIVE
   FLOW /REFERENCE 30 KT LOW-LEVEL EASTERLIES IN HASTINGS WSR-88D VWP
   DATA/. EVEN WITH SURFACE TEMPERATURES COOLING THROUGH THE 70S
   F...THE UNOVERTURNED AIR MASS EITHER SIDE OF THE I-80 VICINITY
   REMAINS WEAK TO MODERATELY UNSTABLE WITH AS MUCH AS 1000 J/KG OF
   MLCAPE PER MODIFICATIONS TO THE 00Z NORTH PLATTE OBSERVED SOUNDING.
   ASIDE FROM THE CONVECTIVE LINE...LARGE HAIL WILL REMAIN A SHORT-TERM
   CONCERN ESPECIALLY WITH SUSTAINED SUPERCELLULAR DEVELOPMENT AHEAD OF
   THE BROADER CONVECTIVE LINE...SUCH AS THE ONGOING STORM BETWEEN THE
   BROKEN BOW/KEARNEY AREAS AS OF 02Z.

   ..GUYER.. 08/09/2014


   ATTN...WFO...OAX...GID...LBF...GLD...

   LAT...LON   40590171 41510112 41809964 42369804 41229788 40429873
               40140114 40590171