MESOSCALE DISCUSSION 0621
   NWS STORM PREDICTION CENTER NORMAN OK
   1139 AM CDT WED APR 27 2011
   
   AREAS AFFECTED...SOUTHEAST TN/NORTHERN AL INTO FAR WESTERN
   NC/EXTREME NORTHWEST GA
   
   CONCERNING...TORNADO WATCH 229...230...231...
   
   VALID 271639Z - 271745Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH
   229...230...231...CONTINUES.
   
   DAMAGING WINDS/ISOLATED TORNADOES WILL REMAIN A CONCERN ACROSS
   NORTHEAST AL AND FAR SOUTH-CENTRAL TN INTO EASTERN TN AND EVENTUALLY
   FAR WESTERN NC/PERHAPS FAR NORTHWEST GA.
   
   A NORTHEAST-SOUTHWEST ORIENTED SEVERE QUASI-LINEAR MCS CONTINUES TO
   GROW UPSCALE/ORGANIZE AND ACCELERATE...CENTERED ALONG THE MIDDLE
   TN/NORTH-CENTRAL AL BORDER AS OF 1630Z. IN ADDITION TO RECENT
   TORNADO REPORTS...MEASURED SEVERE WIND GUSTS HAVE BEEN NOTED AT
   LOCATIONS SUCH AS MUSCLE SHOALS AL /52 KT/ AND COURTLAND AL /53 KT/.
   WIDESPREAD DAMAGING WINDS WILL BE A MARKED CONCERN...WITH TORNADOES
   POSSIBLE AS WELL VIA EVOLVING EMBEDDED MESO-VORTICES AMID A SRH-RICH
   ENVIRONMENT. AFTER A MORE IMMEDIATE IMPACT ON THE HUNTSVILLE
   AREA...THESE STORMS SEEM LIKELY TO REACH THE CHATTANOOGA VICINITY
   BEFORE 18Z /2PM LOCAL TIME/. AN ADDITIONAL WATCH IS NOT CURRENTLY
   ANTICIPATED FOR EXTREME NORTHWEST GA DUE TO SMALL AREAL EXTENT OF
   THE GA THREAT.
   
   ..GUYER.. 04/27/2011
   
   
   ATTN...WFO...GSP...MRX...FFC...OHX...BMX...HUN...
   
   LAT...LON   34188734 34528696 36098589 35768384 34978387 34698510
               34048606 34028677 34188734