743 
ACUS11 KWNS 071525
SWOMCD
SPC MCD 071524 
GAZ000-ALZ000-071730-

MESOSCALE DISCUSSION 0818
NWS STORM PREDICTION CENTER NORMAN OK
1024 AM CDT WED MAY 07 2003

AREAS AFFECTED...CNTRL AL/CNTRL GA

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 071524Z - 071730Z

MCS ACROSS NERN MS WILL CONTINUE TO TRACK EWD AND BEGIN TO AFFECT
AREAS E OF WW 283 INCLUDING ERN AL AND CNTRL GA BY 17Z. CONVECTIVE
CLUSTER WITH AN EMBEDDED HP SUPERCELL S OF TUPELO MS WILL HAVE
POTENTIAL FOR ISOLATED WIND DAMAGE AND/OR TORNADOES. NEW WW WILL BE
ISSUED WITHIN THE NEXT HOUR.

LOW-LEVEL JET ACROSS SRN MS IS TRANSPORTING ABUNDANT LOW-LEVEL
MOISTURE NWD AHEAD OF A WELL-SUSTAINED MCS. SHORTWAVE TROUGH OVER
CNTRL MS WAS PROVIDING STRONG LARGE-SCALE FORCING. AS A RESULT...THE
MCS SHOULD CONTINUE TO TRACK EWD ACROSS AL INTO GA THIS AFTERNOON.
SFC HEATING WILL INCREASE INSTABILITY WITH MLCAPE REACHING 1000-2000
J/KG. THE MODERATE INSTABILITY COMBINED WITH MARGINAL DEEP LAYER
SHEAR WILL RESULT IN A THREAT FOR HP-SUPERCELLS/BOW ECHOES WITH
DAMAGING WINDS AND LARGE HAIL. TORNADOES WILL ALSO BE A POSSIBILITY
ALONG BOUNDARIES AND CLOSER TO THE LOW-LEVEL JET AXIS.

..BROYLES.. 05/07/2003

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...CAE...FFC...BMX...HUN...

32828815 34038787 34458711 34288496 33638224 32148229
32188395 32538653