MESOSCALE DISCUSSION 0722
   NWS STORM PREDICTION CENTER NORMAN OK
   0141 AM CDT MON MAY 20 2013
   
   AREAS AFFECTED...PARTS OF SRN/CENTRAL WI
   
   CONCERNING...TORNADO WATCH 187...
   
   VALID 200641Z - 200800Z
   
   CORRECTED TO CHANGE WATCH TYPE FOR WW 187.
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 187 CONTINUES.
   
   SUMMARY...PRIMARY THREAT THROUGH 08Z WILL BE LOCALLY STRONG/DAMAGING
   WINDS...WHILE THE TORNADO THREAT HAS CONTINUED TO DIMINISH.  THE
   DAMAGING WIND THREAT IS FORECAST TO BECOME MORE LIMITED WITH NEWD
   EXTENT...THOUGH A NON-ZERO THREAT WILL EXTENT INTO PARTS OF
   CENTRAL-EAST CENTRAL WI TO THE N/NE OF WW 187.
   
   COUNTIES CAN CONTINUE TO BE CANCELLED WITH THE PASSAGE OF THE
   CONVECTIVE LINE.
   
   DISCUSSION...TRENDS IN REGIONAL RADAR IMAGERY SHOWED A LINE OF
   STORMS MOVING ENEWD AT 40 KT WHICH COULD CONTINUE TO POSE A THREAT
   FOR LOCALLY STRONG/DAMAGING WIND GUSTS INTO PARTS OF CENTRAL WI
   DURING THE EARLY OVERNIGHT PERIOD.  DESPITE CONTINUED BOUNDARY LAYER
   STABILIZATION...STRONGER WIND GUSTS HAVE BEEN ABLE TO REACH THE
   SURFACE /52 KT GUST AT KLNR AT 0537Z/.  THUS...THE CURRENT SPEED OF
   THE STORMS COMBINED WITH 50-60 KT SLY LLJ ACROSS THIS REGION MAY
   ALLOW FOR ADDITIONAL STRONGER GUSTS TO REACH THE SURFACE THROUGH
   08Z.
   
   OVERALL REDUCTION IN LIGHTNING COVERAGE AND CAPPI RADAR IMAGERY AS
   STORMS MOVE AWAY FROM GREATER INSTABILITY SUGGESTS THE DIMINISHING
   TREND IN THE SEVERE WEATHER THREAT WILL PERSIST...WITH NEW WW
   ISSUANCE UNLIKELY.
   
   ..PETERS/HART.. 05/20/2013
   
   
   ATTN...WFO...GRB...LOT...MKX...DVN...ARX...
   
   LAT...LON   42568874 42398966 43328980 43949008 44329020 44428980
               44468911 44238832 43698821 43068848 42568874