MESOSCALE DISCUSSION 1083
   NWS STORM PREDICTION CENTER NORMAN OK
   0610 PM CDT FRI JUN 12 2009
   
   AREAS AFFECTED...PORTIONS OF CNTRL TX
   
   CONCERNING...TORNADO WATCH 390...
   
   VALID 122310Z - 130015Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 390 CONTINUES.
   
   WW 390 HAS BEEN LOCALLY EXTENDED EWD ACROSS N-CNTRL TX. FARTHER
   S...OBSERVATIONAL TRENDS ARE BEING MONITORED FOR A POTENTIAL NEW WW
   ACROSS THE HILL COUNTRY.
   
   AS OF 23Z...SCATTERED INTENSE SUPERCELLS WERE LOCATED ALONG A
   CONFLUENCE AXIS THAT EXTENDED FROM AROUND 50 SE SPS TO 30 S BRO.
   GIVEN THE PRESENCE OF THIS CONFLUENCE BOUNDARY APPARENTLY A COUNTY
   OR SO AHEAD OF DRY LINE REFLECTION...AMBIENT INFLOW AIR MASS REMAINS
   EXTREMELY UNSTABLE WITH MLCAPE AOA 4000 J/KG. LATEST SHORT-TERM
   FORECASTS SUGGEST BELT OF MODERATELY STRONG MID-LEVEL W/NWLYS SHOULD
   REMAIN IN PLACE ACROSS N-CNTRL TX THROUGH THIS EVENING WITH MORE
   MODEST FLOW FARTHER S. THUS...MOST PERSISTENT THREAT FOR VERY LARGE
   HAIL AND OCCASIONAL TORNADOES MAY LIE WITH CURRENT SUPERCELLS INVOF
   JACK COUNTY. OVERALL STORM PROPAGATION SHOULD CONTINUE TO FAVOR A
   SLOW S/SELY MOTION OF RIGHT-MOVING SUPERCELLS. ACTIVITY MAY
   EVENTUALLY SPREAD SEWD OF WW 390 AND WOULD CONSEQUENTLY LEAD TO A
   NEW WW.
   
   ..GRAMS.. 06/12/2009
   
   
   ATTN...WFO...FWD...OUN...EWX...SJT...
   
   LAT...LON   33419668 31509762 30539831 30219898 30319958 31009969
               33069863 33749843 33999780 33819687 33419668