MESOSCALE DISCUSSION 1893
   NWS STORM PREDICTION CENTER NORMAN OK
   0827 PM CDT SUN AUG 07 2011
   
   AREAS AFFECTED...PORTIONS SRN MO...WRN TN...NERN OK...EXTREME WRN
   KY...EXTREME SERN KS...SRN IL...NRN AR.
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 739...740...
   
   VALID 080127Z - 080330Z
   
   CORRECTED FOR TYPO
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   739...740...CONTINUES.
   
   PRIMARY SVR THREAT WILL BE IN FORM OF DAMAGING WIND...IN PROJECTED
   SEWD PATH OF MOST INTENSE PORTION OF FORWARD-PROPAGATING MCS. 
   COMPLEX INITIALLY OVER S-CENTRAL MO IS MOVING SEWD ABOUT 40 KT
   TOWARD NERN AR...MO BOOT-HEEL AND NWRN TN REGION.  THESE AREAS ARE
   BEING MONITORED FOR POSSIBLE WW.
   
   MIXED SIGNALS EXIST IN PARAMETER SPACE REGARDING HOW FAR SE SVR
   THREAT WILL CONTINUE WITH MCS.  MODIFIED RAOBS AND FCST SOUNDINGS
   SUGGEST MLCINH STRENGTHENS CONSIDERABLY WITH SEWD EXTENT  DUE
   LARGELY TO POCKETS OF RELATIVELY WEAK SFC THETAE ACROSS NERN
   AR....WHILE EFFECTIVE SHEAR WEAKENS CONSIDERABLY WITH SWD EXTENT
   ACROSS SERN MO INTO AR AND TN.  HOWEVER...COLD POOL MAY BE
   SUFFICIENTLY WELL-ORGANIZED TO FORCE AREAS OF FAVORABLE
   MOISTURE...I.E. SFC DEW POINTS 70S F OVER BOOT-HEEL REGION AND FAR
   WRN KY...TO LFC...HELPING TO SUPPORT AT LEAST NRN/ERN PORTION OF
   COMPLEX IN THAT DIRECTION.  PEAK GUST OF 59 KT WAS MEASURED AT UNO
   AT 0054Z.  SVR POTENTIAL FARTHER W ALONG OUTFLOW BOUNDARY IS
   LESSENING AND BECOMING MORE CONDITIONAL WITH TIME...AS BOUNDARY
   BECOMES MORE SHALLOW/DISTANT FROM CAUSATIVE CONVECTION AND AIR MASS
   ON WARM SIDE COOLS/STABILIZES DIABATICALLY.  WWS MAY BE CLEARED
   BEHIND THIS COMPLEX...AND PERHAPS ALONG NON-CONVECTING WRN LIMB OF
   OUTFLOW BOUNDARY AS WELL.
   
   ..EDWARDS.. 08/08/2011
   
   
   ATTN...WFO...PAH...MEG...LSX...LZK...SGF...TSA...ICT...
   
   LAT...LON   37229444 37079270 37029188 37829107 38239058 38088966
               37568890 37098846 36268840 35518883 35238976 35689136
               35949256 36979586 37229444