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Mesoscale Discussion 1222
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   MESOSCALE DISCUSSION 1222
   NWS STORM PREDICTION CENTER NORMAN OK
   0608 PM CDT MON JUN 30 2014

   AREAS AFFECTED...PORTIONS OF CNTRL IL

   CONCERNING...TORNADO WATCH 374...

   VALID 302308Z - 010015Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 374 CONTINUES.

   SUMMARY...A SVR-TSTM RISK IS EVOLVING ACROSS CNTRL IL. WITH TORNADO
   WATCH 374 CURRENTLY SET TO EXPIRE AT 0000Z...IT IS POSSIBLE THAT THE
   WW MAY NEED TO BE LOCALLY EXTENDED IN TIME OR AREA.

   DISCUSSION...ONGOING INTENSE CONVECTIVE CLUSTERS OVER THE SRN FLANK
   OF A MATURE MCS WHOSE PRIMARY BOWING SEGMENT APEX IS SURGING THROUGH
   SRN WI...CONTINUE EVOLVING IN CNTRL IL. A FEED OF RICH LOW-LEVEL
   MOISTURE FROM THE S ASSOCIATED WITH MIDDLE 70S DEWPOINTS WILL
   CONTINUE TO SUSTAIN THIS ACTIVITY AMIDST AROUND 35 KT OF 0-6-KM BULK
   SHEAR PER ILX VWP. WITH POTENTIAL SWD CONVECTIVE PROPAGATION INTO AN
   EXTREMELY UNSTABLE AIR MASS IN CNTRL IL...AND WITH THE SVR RISK
   POSSIBLY LINGERING IN PARTS OF TORNADO WATCH 374 AFTER 0000Z...LOCAL
   AREAL/TEMPORAL EXTENSIONS OF THE WATCH MAY BE NECESSARY. IN ADDITION
   TO DMGG WINDS AND SVR HAIL...THE RISK FOR A TORNADO MAY PERSIST WITH
   AROUND 200 M2/S2 OF 0-1-KM SRH.

   ..COHEN.. 06/30/2014


   ATTN...WFO...LOT...ILX...DVN...

   LAT...LON   40779018 41548936 41398875 40758860 40138889 40168982
               40779018 

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