MESOSCALE DISCUSSION 1886
   NWS STORM PREDICTION CENTER NORMAN OK
   0902 PM CDT TUE JUL 26 2005
   
   AREAS AFFECTED...E-CNTRL IL EWD ACROSS NRN AND CNTRL IND/OH INTO WRN
   PA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 687...690...
   
   VALID 270202Z - 270300Z
   
   THROUGH 03Z...IT APPEARS THE GREATEST THREAT OF PRIMARILY DAMAGING
   WINDS WILL EXIST FROM CNTRL IND INTO N-CNTRL OR NWRN OH. WW 687 WILL
   EXPIRE AT 03Z AND A NEW WW MAY NEED TO BE CONSIDERED SHOULD STORMS
   MAINTAIN THEIR INTENSITY.
   
   AS OF 0150Z...REGIONAL RADAR IMAGERY SHOWS A NE-SW ORIENTED LINE OF
   STRONG TO SEVERE STORMS FROM 30 E FWA TO 20 SE LAF MOVING 250/30-35
   KTS. SHORTWAVE TROUGH AND ASSOCIATED 50-55 KT MID-LEVEL SPEED MAX
   COUPLED WITH A MODERATELY UNSTABLE AIR MASS CONTINUES TO SUSTAIN
   THIS ACTIVITY AHEAD OF COLD FRONT SLOWLY SAGGING SWD THROUGH AREA.
   WHILE STORMS HAVE BECOME ALIGNED NEARLY PARALLEL WITH
   MID/UPPER-LEVEL WIND FIELDS...EMBEDDED BOWING STRUCTURES OBSERVED
   WITHIN THE LINE WILL REMAIN CAPABLE OF DAMAGING WINDS. ORGANIZED
   WIND THREAT MAY PERSIST BEYOND 03Z INTO PORTIONS OF NWRN/W-CNTRL OH
   AND A NEW WW MAY BE REQUIRED BEFORE WW 687 EXPIRES. 
   
   OTHER CLUSTERS OF STRONG TO SEVERE STORMS SW OF CAK AND NE OF PIT
   WILL REMAIN CAPABLE OF ISOLATED DAMAGING WINDS FOR THE NEXT 1-2
   HOURS...THOUGH STORMS SHOULD TEND TO WEAKEN AS THEY MOVE INTO MORE
   STABLE AIR MASS.
   
   ..MEAD.. 07/27/2005
   
   
   ATTN...WFO...CTP...LWX...PBZ...RLX...CLE...ILN...DTX...IWX...IND...LOT...ILX...LSX...
   
   40798890 42248272 41688249 41307708 40537737 40327839
   39717890 39348106 39988277 38828897