MESOSCALE DISCUSSION 1370
   NWS STORM PREDICTION CENTER NORMAN OK
   0432 PM CDT TUE JUL 03 2007
   
   AREAS AFFECTED...WI
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 032132Z - 032230Z
   
   COORDINATION ON A NEW WATCH FOR PORTIONS OF WI IS ONGOING. PARTS OF
   ECNTRL AND SERN WI MAY REQUIRE A SEVERE TSTM WATCH AS WEAKLY
   ORGANIZED TSTM COMPLEX MOVES EAST THIS EVENING.
   
   MATURE MCS CONTINUES TO MAINTAIN INTENSITY ACROSS WCNTRL WI LATE
   THIS AFTERNOON WITH A FEW RECENT HAIL AND WIND REPORTS OCCURRING
   WITH THE MORE INTENSE MULTICELLULAR CONVECTION EMBEDDED WITHIN THIS
   SYSTEM. WHILE DOWNSTREAM AIR MASS ACROSS CNTRL/ERN WI TO LAKE
   MICHIGAN...WAS CURRENTLY LESS UNSTABLE THAN POINTS WEST...GRADUAL
   DESTABILIZATION WAS ONGOING ACROSS THE REGION AS TEMPERATURES CLIMB
   THROUGH THE MID 70S IN RELATIVELY MOIST AIR MASS. EFFECTIVE SHEAR
   ACROSS THE REGION WAS ALSO SOMEWHAT MARGINAL WITH VWP AND RUC DATA
   INDICATING VECTOR SHEAR OF ABOUT 20-25KT. HOWEVER...SHEAR IS
   EXPECTED TO ALSO INCREASE FURTHER AS STRONGER FLOW COINCIDENT WITH
   THE MCS/MCV SPREADS EAST THROUGH THE EVENING. GIVEN LATEST TRENDS IN
   RADAR/SATELLITE...AND TIME OF DAY...A WATCH MAY BE REQUIRED ACROSS
   PARTS OF THE REGION WITHIN THE NEXT HOUR.
   
   ..CARBIN.. 07/03/2007
   
   
   ATTN...WFO...GRB...MKX...ARX...
   
   43348796 42948846 43509018 44949015 45168980 44968870
   44798833 44248775 43828778