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Mesoscale Discussion 569
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   MESOSCALE DISCUSSION 0569
   NWS STORM PREDICTION CENTER NORMAN OK
   0549 PM CDT SUN MAY 11 2014

   AREAS AFFECTED...ERN IL...SRN/CNTRL INDIANA

   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 

   VALID 112249Z - 112345Z

   PROBABILITY OF WATCH ISSUANCE...40 PERCENT

   SUMMARY...STRONG STORMS WILL SPREAD ACROSS SERN IL/SWRN INDIANA INTO
   CNTRL INDIANA OVER THE NEXT FEW HOURS.  LOCALLY DAMAGING WINDS AND
   PERHAPS SEVERE HAIL CAN BE EXPECTED FOR THE NEXT FEW HOURS.

   DISCUSSION...CLUSTER OF STRONG-SEVERE MULTI-CELL THUNDERSTORMS ARE
   PROPAGATING NNEWD AT ROUGHLY 30KT.  THIS ACTIVITY HAS GRADUALLY
   DEVELOPED A COLD POOL AND THIS APPEARS TO BE AIDING NWD MOVEMENT AS
   IT SPREADS ACROSS SERN IL/SWRN INDIANA.  WHILE LOCALLY DAMAGING
   WINDS COULD ACCOMPANY THE LEADING EDGE OF THIS ACTIVITY LATEST WDSII
   MESH DATA SUGGESTS LARGE HAIL IS OCCURRING WITH THE STRONGEST
   UPDRAFTS...PARTICULARLY CUMBERLAND COUNTY IL.  GREATEST RISK FOR
   ROBUST UPDRAFTS/DOWNDRAFTS WILL BE OVER THE NEXT FEW HOURS.

   ..DARROW/THOMPSON.. 05/11/2014


   ATTN...WFO...ILN...LMK...IND...ILX...

   LAT...LON   38708650 39368841 40228762 39778517 38978523 38708650 

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Page last modified: May 11, 2014
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