697 ACUS11 KWNS 051212 SWOMCD SPC MCD 051211 TNZ000-ALZ000-KYZ000-MSZ000-MOZ000-ARZ000-051415- MESOSCALE DISCUSSION 0757 NWS STORM PREDICTION CENTER NORMAN OK 0711 AM CDT MON MAY 05 2003 AREAS AFFECTED...NERN AR / WRN AND MIDDLE TN / NRN MS / NRN AL... CONCERNING...TORNADO WATCH 247... VALID 051211Z - 051415Z SEVERE / TORNADO THREAT CONTINUES ACROSS WW. LOW-LEVEL SLY FLOW CONTINUES TO ADVECT WARM / MOIST AIRMASS NWD INTO THE REGION BENEATH STRONG WSWLY FLOW ALOFT. THUS...ENVIRONMENT REMAINS THERMODYNAMICALLY AND KINEMATICALLY FAVORABLE FOR CONTINUED SUPERCELL DEVELOPMENT AND ASSOCIATED SEVERE THREAT. SEVERAL SUPERCELLS -- NOW MOVING INTO SWRN TN AND ALSO ACROSS SRN MIDDLE TN -- ARE OBSERVED ATTM...WITH ASSOCIATED THREAT FOR LARGE HAIL AND LOCALLY DAMAGING WINDS ALONG WITH AN ISOLATED TORNADO. EXPECT THIS THREAT TO CONTINUE FOR THE NEXT FEW HOURS AS FAVORABLE LARGE-SCALE CONDITIONS PERSIST. ..GOSS.. 05/05/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...MRX...OHX...HUN...PAH...MEG...LZK... 34749166 35939012 36528837 36568552 35278543 34318632