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Mesoscale Discussion 1155
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   MESOSCALE DISCUSSION 1155
   NWS STORM PREDICTION CENTER NORMAN OK
   0915 PM CDT WED JUN 25 2014

   AREAS AFFECTED...EASTERN WY/WEST-CENTRAL SD/NEB PANHANDLE

   CONCERNING...SEVERE THUNDERSTORM WATCH 355...

   VALID 260215Z - 260345Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 355
   CONTINUES.

   SUMMARY...POTENTIAL FOR ISOLATED SEVERE HAIL/LOCALLY STRONG WINDS IS
   EXPECTED TO BECOME INCREASINGLY MARGINAL THE REMAINDER OF THE
   EVENING. SEVERE THUNDERSTORM WATCH 355 WILL LIKELY BE ALLOWED TO
   EXPIRE AT 03Z.

   DISCUSSION...EARLIER SEMI-DISCRETE STORMS/SUPERCELLS HAVE NOW
   GENERALLY MERGED INTO LINEAR SEGMENTS ACROSS WEST-CENTRAL/SOUTHWEST
   SD AS OF 02Z...WITH ISOLATED STRONGER REDEVELOPMENT ALSO NOTED
   ACROSS FAR EAST-CENTRAL WY. AN INCREASING SOUTH-SOUTHEASTERLY
   LOW-LEVEL JET MAY ALLOW FOR A GENERAL EASTWARD PERSISTENCE OF A
   LOOSELY ORGANIZED MCS THIS EVENING...ESPECIALLY IN VICINITY OF A
   FRONTAL BOUNDARY ACROSS SD. HOWEVER...IN THE ABSENCE OF MORE
   APPRECIABLE FORCING/SURFACE COLD POOL DEVELOPMENT...THE
   THERMODYNAMIC INFLUENCES OF PRIOR CONVECTIVE OVERTURNING AND/OR
   NOCTURNAL COOLING OF THE BOUNDARY LAYER SHOULD BE THE DOMINANT
   FACTOR FOR WHAT IS EXPECTED TO BE A DIMINISHING INTENSITY TREND THE
   REMAINDER OF THE EVENING.

   ..GUYER.. 06/26/2014


   ATTN...WFO...ABR...LBF...UNR...CYS...RIW...

   LAT...LON   44960288 45830138 43000135 41080215 41190272 42970278
               43480609 44960288 

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Page last modified: June 26, 2014
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