MESOSCALE DISCUSSION 0167
   NWS STORM PREDICTION CENTER NORMAN OK
   0529 PM CST FRI FEB 27 2009
   
   AREAS AFFECTED...ERN MS/PARTS OF CENTRAL AND SRN AL/WRN GA
   
   CONCERNING...TORNADO WATCH 38...
   
   VALID 272329Z - 280130Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 38 CONTINUES.
   
   SUPERCELL THUNDERSTORMS -- ACCOMPANIED BY A SEVERE/ISOLATED TORNADO
   THREAT -- CONTINUE MOVING EWD/ESEWD ACROSS WW 38.  STORMS SHIFTING E
   OF THE WW WITH TIME MAY REQUIRE NEW WW ISSUANCE.
   
   LATEST RADAR IMAGERY SHOWS STRONG TO SEVERE STORMS ACROSS PARTS OF
   WW 38...WITH THE STRONGEST/SUPERCELL STORMS NOW MAINLY OVER W
   CENTRAL AND INTO CENTRAL AL.  THESE STORMS APPEAR TO BE OCCURRING
   JUST TO THE COOL SIDE OF A WNW-ESE SURFACE BOUNDARY...AND ARE THUS
   LIKELY TO BE SLIGHTLY ELEVATED -- AS ALSO SUGGESTED BY THE
   PREVALENCE OF HAIL REPORTS THUS FAR.
   
   DESPITE THIS...SLY SURFACE FLOW ADVECTING LOW 60S DEWPOINTS NWD WILL
   CONTINUE TO FEED FAVORABLE AIR INTO THE CONVECTION...WHILE ALSO
   SUPPLYING LOW-LEVEL CONVERGENCE/LIFT NEAR AND JUST N OF THE SURFACE
   BOUNDARY.  THUS WILL SUPPORT A CONTINUED THREAT FOR SEVERE/SUPERCELL
   STORMS...AND A CONTINUED -- THOUGH ISOLATED -- TORNADO THREAT.
   
   A FEW STRONGER CELLS ARE NEARING THE ERN FRINGE OF WW 38 ATTM...AND
   WHILE DOWNSTREAM AIRMASS REMAINS LESS FAVORABLE...DEGREE OF THREAT
   MAY BECOME SUFFICIENT TO SUPPORT THE NEED FOR AN ADDITIONAL WW INTO
   SERN AL AND PARTS OF SWRN GA.
   
   ..GOSS.. 02/27/2009
   
   
   ATTN...WFO...FFC...TAE...BMX...MOB...JAN...
   
   LAT...LON   32598903 33478921 33338795 32778529 31908402 30908420
               31448621 31898828 32598903