MESOSCALE DISCUSSION 1656
   NWS STORM PREDICTION CENTER NORMAN OK
   0542 PM CDT MON JUL 18 2011
   
   AREAS AFFECTED...WO
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 657...
   
   VALID 182242Z - 182345Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 657
   CONTINUES.
   
   A FAIRLY HEALTHY BAND OF CONVECTION HAS EVOLVED ACROSS CNTRL WI
   ALONG SWRN FLANK OF APPARENT SHORT WAVE TROUGH THAT IS DIGGING
   ACROSS CNTRL ONTARIO/GREAT LAKES REGION.  THIS ACTIVITY IS NOT
   MOVING PARTICULARLY FAST...ON THE ORDER OF 20KT...BUT THIS E-W BAND
   OF STORMS IS GRADUALLY INTENSIFYING FROM OUTAGAMIE COUNTY INTO
   WAUPAGA COUNTY.  UPWARD EVOLVING SQUALL LINE MAY BEGIN TO SURGE A
   BIT FASTER IF PRECIP CONTINUES TO EXPAND AND A COLD POOL EVOLVES. 
   AS A RESULT...SEVERE THREAT MAY SPREAD INTO PORTIONS OF SERN WI JUST
   SOUTH OF THE CURRENT WW SHORTLY AFTER 00Z.
   
   ..DARROW.. 07/18/2011
   
   
   ATTN...WFO...MQT...GRB...MKX...DLH...ARX...MPX...
   
   LAT...LON   45649140 45708762 43988762 43909140 45649140