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Mesoscale Discussion 1150
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   MESOSCALE DISCUSSION 1150
   NWS STORM PREDICTION CENTER NORMAN OK
   1255 AM CDT WED JUN 24 2015

   AREAS AFFECTED...WRN SD...NE WY

   CONCERNING...SEVERE THUNDERSTORM WATCH 347...

   VALID 240555Z - 240630Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 347
   CONTINUES.

   SUMMARY...A SMALL CLUSTER OF THUNDERSTORMS WILL MOVE EAST ACROSS THE
   WATCH AREA EARLY THIS MORNING WITH A RISK FOR LARGE HAIL AND
   DAMAGING WINDS.

   DISCUSSION...FORCING FOR ASCENT/DCVA DOWNSTREAM FROM A SUBTLE
   SHORT-WAVE TROUGH MOVING THROUGH THE NRN INTERMOUNTAIN REGION IN
   CONCERT WITH LOW-LEVEL UPSLOPE FLOW HAS FOSTERED A SMALL CLUSTER OF
   TSTMS EARLY THIS MORNING OVER NERN WY.  AND WHILE THE THERMODYNAMIC
   ENVIRONMENT IS CHARACTERIZED BY ONLY MARGINAL
   INSTABILITY...NON-HYDROSTATIC PRESSURE PERTURBATIONS --ARISING FROM
   THE STRONG VERTICAL SHEAR-- WILL CONTRIBUTE TO UPDRAFT INTENSITY AND
   A PROLONGED RISK FOR LARGE HAIL AND DAMAGING WINDS AS ACTIVITY
   SPREADS EWD INTO THE BLACK HILLS EARLY THIS MORNING.

   ..MEAD.. 06/24/2015


   ATTN...WFO...LBF...UNR...CYS...BYZ...

   LAT...LON   43000208 43000208 43000248 43000405 43500508 43500508
               44220508 44520508 44790508 45000508 45200404 45200397
               45200369 45200355 45200348 45200300 45200295 45040200
               45040200 44500200 44340200 43990201 43700201 43000208
               43000208 

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Page last modified: June 24, 2015
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