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Mesoscale Discussion 327
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   MESOSCALE DISCUSSION 0327
   NWS STORM PREDICTION CENTER NORMAN OK
   0620 PM CDT SAT APR 12 2014

   AREAS AFFECTED...IA...SRN WI

   CONCERNING...SEVERE THUNDERSTORM WATCH 70...

   VALID 122320Z - 130015Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 70
   CONTINUES.

   SUMMARY...SEVERE THUNDERSTORMS SHOULD EVOLVE OVER SWRN PARTS OF WW
   IN THE NEXT HOUR OR SO.

   DISCUSSION...LATEST SATELLITE IMAGERY DEPICTS A WEAK MID-LEVEL VORT
   OVER NCNTRL KS...LIFTING ENEWD TOWARD SERN NEB.  OVER THE LAST HALF
   HOUR OR SO UPDRAFTS HAVE INTENSIFIED ALONG THE MO RIVER OVER
   MILLS/FREMONT COUNTIES IN IA.  THIS ACTIVITY APPEARS TO BE ROOTED IN
   THE BOUNDARY LAYER AND IS LIKELY AIDED IN PART BY APPROACHING
   MID-LEVEL VORT.

   THUNDERSTORMS SHOULD GRADUALLY INCREASE IN AREAL COVERAGE/INTENSITY
   ACROSS THE SWRN PORTIONS OF WW70 THIS EVENING BEFORE MERGING INTO
   SWRN FLANK OF ACTIVITY THAT EXTENDS FROM SRN WI INTO CNTRL IA. 
   LARGE HAIL REMAINS THE GREATEST RISK WITH THIS CONVECTION...THOUGH
   DAMAGING WINDS ARE ALSO POSSIBLE.

   ..DARROW.. 04/12/2014


   ATTN...WFO...LOT...MKX...DVN...ARX...DMX...FSD...OAX...

   LAT...LON   42509556 43868925 42128924 40769558 42509556 

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Page last modified: April 13, 2014
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