MESOSCALE DISCUSSION 1395
   NWS STORM PREDICTION CENTER NORMAN OK
   0345 PM CDT WED JUN 23 2004
   
   AREAS AFFECTED...S CENTRAL AND SERN MN / NERN IA / CENTRAL AND SRN
   WI / POSSIBLY NRN IL
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 511...
   
   VALID 232045Z - 232215Z
   
   SEVERE THREAT CONTINUES ACROSS SERN PORTIONS OF WW...AND APPEARS TO
   BE INCREASING SEWD ACROSS SERN MN / NERN IA INTO THE SRN HALF OF WI
   / NRN IL.  NEW WW MAY BE REQUIRED SE OF WW 511.
   
   LATEST WV IMAGERY SHOWS STRONGEST ASCENT ASSOCIATED WITH UPPER VORT
   MAX IS NOW SHIFTING SEWD ACROSS ERN MN INTO WI / FAR NERN IA...WHERE
   LOW-LEVEL MOISTURE ADVECTION / DESTABILIZATION IS UNDERWAY. 
   OBJECTIVE ANALYSES INDICATE 500 TO 1000 J/KG MEAN-LAYER CAPE NOW IN
   PLACE ACROSS THIS REGION...WHICH SHOULD CONTRIBUTE TO AN INCREASE IN
   STORM COVERAGE / INTENSITY OVER THE NEXT 1 TO 2 HOURS. WITH AREA
   VWP / PROFILER DATA INDICATING STRONG / WEAKLY-VEERING DEEP-LAYER
   WINDS WITH HEIGHT -- SUPPORTIVE OF SEVERE / SUPERCELL
   STORMS...THREAT FOR LARGE HAIL AND DAMAGING WINDS APPEARS TO BE
   INCREASING.
   
   ..GOSS.. 06/23/2004
   
   
   ATTN...WFO...GRB...LOT...MKX...DVN...ARX...MPX...DMX...FSD...
   
   45439404 45169304 44569150 44099015 43918781 42288685
   42229013 42829274 44039557