MESOSCALE DISCUSSION 2134
   NWS STORM PREDICTION CENTER NORMAN OK
   0315 PM CDT MON SEP 05 2011
   
   AREAS AFFECTED...PARTS OF ERN/SERN AL...FL PANHANDLE AND SWRN GA
   
   CONCERNING...TORNADO WATCH 838...
   
   VALID 052015Z - 052045Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 838 CONTINUES.
   
   TORNADO WATCH 838 IS CURRENTLY SCHEDULED TO EXPIRE AT 21Z.  PARTS OF
   THIS WATCH OVER ERN AL WILL LIKELY NEED TO BE REPLACED WITH A NEW
   TORNADO WATCH...WHILE FARTHER TO THE SE OVER PARTS SERN AL...THE FL
   PANHANDLE AND INTO SWRN GA...A SEVERE TSTM WATCH /#841/ HAS BEEN
   ISSUED.
   
   ...ERN AL...
   MID AFTERNOON TRENDS IN RADAR IMAGERY AND SURFACE OBSERVATIONS
   SHOWED AN AREA OF LOW PRESSURE SHIFTING ENEWD INTO SOUTH CENTRAL AL
   WITH STRONGEST LOW LEVEL FLOW/SHEAR EXTENDING FROM SERN AL INTO
   CENTRAL/NRN GA.  GIVEN THESE FACTORS...A NEW TORNADO WATCH WILL
   LIKELY BE NEEDED OVER PARTS OF ERN AL AS THE THREAT FOR TORNADOES
   AND DAMAGING WINDS WILL PERSIST ALONG AND ENE OF THE TRACK OF THE
   SURFACE LOW TOWARD NWRN GA.
   
   ...PARTS OF SERN AL...FL PANHANDLE INTO SWRN GA...
   A DEEPER MIXED BOUNDARY LAYER AND WEAKER LOW LEVEL SHEAR IS
   RESULTING IN A GREATER THREAT FOR DAMAGING WINDS...THAN A TORNADO
   THREAT.  STRONG UNI-DIRECTIONAL /SLY/ WIND FIELDS SUPPORTS THIS
   THREAT FOR DAMAGING WINDS...AS THE AIR MASS OVER THESE AREAS REMAINS
   MODERATELY UNSTABLE AND SUFFICIENTLY SHEARED THROUGH A DEEP LAYER
   FOR ORGANIZED LINE SEGMENTS.
   
   ..PETERS.. 09/05/2011
   
   
   ATTN...WFO...JAX...FFC...TAE...BMX...MOB...
   
   LAT...LON   31908488 31818304 30968301 30218323 29678305 29618336
               30038400 29778480 29688517 30488634 31008622 31558611
               32408629 32908605 33318530 31908488