MESOSCALE DISCUSSION 0798
   NWS STORM PREDICTION CENTER NORMAN OK
   0748 PM CDT MON MAY 14 2007
   
   AREAS AFFECTED...N CENTRAL WI...CENTRAL UPPER MI...
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 271...
   
   VALID 150048Z - 150245Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 271
   CONTINUES.
   
   STRONG/SEVERE STORMS CONTINUE EWD ACROSS N CENTRAL WI/S CENTRAL
   UPPER MI AND ARE NOW MOVING INTO INSTABILITY AXIS ON A LINE FROM
   BARRON AND DUNN COUNTIES IN WI NEWD INTO IRON AND BARAGA COUNTIES IN
   MI.  MLCAPE VALUES ARE 1000-2000 J/KG THRU THIS REGION WITH DEEP
   LAYER SHEAR BETWEEN 45-55 KT.  RUC SOUNDINGS SHOW STRONG LOW LEVEL
   SHEAR/TURNING IN THE HODOGRAPH IN THE LOWEST 3KM AND 46 KT OF SHEAR
   WHICH WILL BRIEFLY SUPPORT SUPERCELLULAR CHARACTERISTICS ON THE NRN 
   SECTIONS OF THE ACTIVITY.  MEAN LAPSE RATE IN THE 850-500 MB LAYER
   IS 7.5C/KM ENHANCING DOWNBURST/HAIL POTENTIAL FOR THE NEXT FEW
   HOURS.
   
   ..MCCARTHY.. 05/15/2007
   
   
   ATTN...WFO...DLH...FGF...
   
   46709527 47949435 48299280 47899127 47329182 46469328
   46399461