MESOSCALE DISCUSSION 0555
   NWS STORM PREDICTION CENTER NORMAN OK
   1233 PM CDT FRI APR 04 2008
   
   AREAS AFFECTED...EXTREME E CNTRL AL THROUGH N CNTRL AND CNTRL GA
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 041733Z - 041900Z
   
   THE THREAT FOR SEVERE STORMS INCLUDING DAMAGING WIND...ISOLATED
   TORNADOES AND LARGE HAIL IS EXPECTED TO INCREASE FARTHER EAST FROM E
   CNTRL AL THROUGH N CNTRL AND CNTRL GA THIS AFTERNOON. A WW WILL
   LIKELY BE NEEDED BEFORE 19Z.
   
   EARLY THIS AFTERNOON A WEDGE FRONT EXTENDS FROM SRN SC WWD THROUGH S
   CNTRL GA THEN NWWD THROUGH NWRN GA INTO EXTREME NERN AL. A SQUALL
   LINE EXTENDS FROM NERN AL SWWD THROUGH CNTRL AND SWRN MS THEN INTO
   SERN TX. A SWLY 40 KT LOW LEVEL JET WILL PERSIST ACROSS THE WARM
   SECTOR DOWNSTREAM FROM UPPER TROUGH ADVANCING EWD THROUGH THE MID TO
   LOWER MS VALLEY. THE PERSISTENT STRONG SWLY BOUNDARY LAYER FLOW AND
   MIXING WILL CONTRIBUTE TO THE WEDGE FRONT GRADUALLY SHIFTING NWD
   DURING THE DAY WITH DESTABILIZATION IN THE MOISTENING WARM SECTOR.
   SPECIAL 17Z RAOB DATA FROM BIRMINGHAM SHOW THE CAP HAS WEAKENED WITH
   DISCRETE STORMS DEVELOPING ACROSS AL AHEAD OF THE LINE. ACTIVITY
   WILL LIKELY CONTINUE TO SPREAD NEWD WITH TIME INTO EXTREME ERN AL
   AND GA. EFFECTIVE BULK SHEAR FROM 40 TO 50 KT WILL SUPPORT ORGANIZED
   STORMS INCLUDING SUPERCELLS AS WELL AS BOWING SEGMENTS. LOW LEVEL
   HODOGRAPHS SHOULD REMAIN SUFFICIENT FOR A THREAT OF LOW LEVEL
   MESOCYCLONES AND ISOLATED TORNADOES ALONG THE LOW LEVEL JET AXIS.
   
   ..DIAL.. 04/04/2008
   
   
   ATTN...WFO...FFC...BMX...
   
   34368490 34148370 33568281 32948238 32228282 32178442
   32748570 33988564