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Mesoscale Discussion 1128
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   MESOSCALE DISCUSSION 1128
   NWS STORM PREDICTION CENTER NORMAN OK
   1000 PM CDT MON JUN 22 2015

   AREAS AFFECTED...NERN IL...NRN INDIANA...NWRN OH...SERN LOWER MI

   CONCERNING...TORNADO WATCH 338...

   VALID 230300Z - 230400Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 338 CONTINUES.

   SUMMARY...SEVERE THREAT CONTINUES ACROSS WW.

   DISCUSSION...EARLIER ELEVATED CONVECTION THAT EVOLVED ATOP EML HAS
   GRADUALLY INTENSIFIED AND BY ALL ACCOUNTS APPEARS TO HAVE ROOTED
   INTO THE BOUNDARY LAYER.  THIS ACTIVITY IS LIKELY NEAR-SFC BASED
   EAST OF LAKE MI FROM KALAMAZOO COUNTY...NEWD TO THE SRN TIP OF LAKE
   HURON.  SEVERAL SUPERCELLS HAVE EVOLVED ALONG THIS CORRIDOR AND
   ISOLATED LARGE HAIL LIKELY ACCOMPANIES THE STRONGEST UPDRAFTS. 
   TORNADO THREAT CONTINUES WITH THE MORE DISCRETE STORMS.

   UPSTREAM...LONG-LIVED TORNADIC SUPERCELL CONTINUES ITS SEWD MOVEMENT
   ACROSS GRUNDY COUNTY IL AND WILL SOON MOVE INTO SRN WILL/NRN
   KANKAKEE COUNTY IL OVER WRN PORTIONS OF WW.  LATEST ROTATIONAL
   VELOCITY SUGGESTS THIS CYCLICAL STORM IS PRODUCING A SIGNIFICANT
   TORNADO AS IT CROSSES I-55.

   ..DARROW.. 06/23/2015


   ATTN...WFO...CLE...DTX...IWX...GRR...IND...LOT...ILX...

   LAT...LON   41698823 44128282 42088282 39668827 41698823 

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Page last modified: June 23, 2015
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