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Mesoscale Discussion 654
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   MESOSCALE DISCUSSION 0654
   NWS STORM PREDICTION CENTER NORMAN OK
   1053 PM CDT FRI MAY 15 2015

   AREAS AFFECTED...WESTERN NEBRASKA

   CONCERNING...SEVERE THUNDERSTORM WATCH 173...

   VALID 160353Z - 160500Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 173
   CONTINUES.

   SUMMARY...SEVERE THUNDERSTORMS WILL BE CONCENTRATED ACROSS THE
   EASTERN HALF OF WW173.

   DISCUSSION...LONG-LIVED CONVECTIVE CLUSTER IS GRADUALLY SHIFTING
   EAST ACROSS NRN HALF OF WW AT ROUGHLY 15-20KT...WHILE INDIVIDUAL
   CELLS ARE TRACKING NEWD MORE QUICKLY.  IT APPEARS THE GREATEST RISK
   FOR SEVERE THUNDERSTORMS WILL REMAIN ACROSS THE EASTERN HALF OF THE
   WW AS NEW ISOLATED THUNDERSTORMS ARE NOW DEVELOPING ALONG SURGING
   BOUNDARY NEAR THE KS/NEBRASKA BORDER.  HAIL IS THE PRIMARY
   THREAT...THOUGH GUSTY WINDS HAVE BEEN NOTED WITH CONVECTION OVER
   NWRN KS.

   IF ISOLATED CONVECTION CONTINUES TO INCREASE JUST EAST OF WW THEN A
   LOCAL EXTENSION MAY BE REQUIRED.

   ..DARROW.. 05/16/2015


   ATTN...WFO...LBF...GLD...BOU...

   LAT...LON   40370213 42840250 42840052 40370021 40370213 

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Page last modified: May 16, 2015
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