STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWBC. VALID 122000Z - 131200Z THERE IS A MDT RISK OF SVR TSTMS THROUGH THIS EVENING FOR A SMALL PART OF SERN AL..PART OF SRN GA..AND THE FL PANHANDLE...TO THE RIGHT OF A LINE FROM 15 WNW PNS 25 S TOI CSG 30 SW MCN 50 N AYS 20 SE AYS 45 NW CTY. THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 35 W HUM 35 SSE BTR 25 WNW PNS 40 NW CEW 40 SW TOI 20 NNW MGM 30 NW LGC 35 SW AHN 20 NE AGS 35 NW FLO RWI 25 ENE ECG ...CONT... 25 ESE JAX 15 WSW CTY. THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 20 ESE SGF 30 E VIH 25 N SLO BMG 50 NE SDF 20 WNW LEX 60 ENE BWG 15 N BNA 50 ENE MKL 15 ESE MEM 45 ENE PBF 25 SSW HOT 25 ENE PGO 15 NNE FYV 20 ESE SGF. GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 10 W 7R4 35 N BTR 40 SSE JAN 30 NNE MEI 15 ESE CBM 20 NNW GLH 10 WNW TXK 25 SW PGO 25 NNW FYV COU 10 SE PIA 20 SW BEH 10 SE DTW ...CONT... 35 NE CLE 20 NNE PKB 10 NNE 5I3 HSS 15 WSW HKY 30 W DAN 30 WNW RIC 35 SSW ACY ...CONT... 45 SE JAX 35 SSW CTY. ...CENTRAL GULF COAST TO THE SRN ATLANTIC COAST... MESO LOW CONTINUES INVOF INTERSECTION OF SQUALL LINE/BOW ECHO AND NEAR E-W ORIENTED SURFACE WARM FRONT EXTENDING ACROSS SRN GA. WIDESPREAD DAMAGING WINDS HAVE BEEN REPORTED WITH THIS LINE...AND AS FURTHER HEATING AND STRONG PRESSURE FALLS DEVELOP AHEAD OF THE ACTIVITY...THIS THREAT WILL CONTINUE FOR A FEW MORE HOURS /REFERENCE SWOMCD 287/. WITH VWP/S INVOF THE WARM FRONT YIELDING EXTREME LOW LEVEL SHEAR/HELICITY VALUES...THERE WILL ALSO REMAIN A THREAT FOR ISOLATED /BUT POTENTIALLY STRONG/ TORNADOES FROM FAR SERN AL INTO S-CENTRAL GA ALONG THE WARM FRONT. FROM SERN GA/NERN FL NWD ALONG THE SRN ATLANTIC COAST...SURFACE DEW POINTS HAVE STEADILY INCREASED THROUGH THE DAY WITH DEW POINTS IN THE LOWER 60S ATTM OVER ERN GA/SC. STRONG UVV/S AND SURFACE PRESSURE FALLS OVER SRN/CENTRAL GA ATTM ARE FORECAST TO CONTINUE SPREADING NEWD ACROSS THE CAROLINAS THOUGH THE EVENING/OVERNIGHT. THIS WILL LIKELY SUPPORT ISOLATED SEVERE WINDS AND POSSIBLY AN ISOLATED TORNADO LATER THIS EVENING/OVERNIGHT AS STRONG CONVECTION DEVELOPS INTO MARGINAL INSTABILITY. ...AR/SERN MO INTO THE LOWER OH VALLEY... THOUGH EXTENSIVE MCS OVER THE GULF COAST HAS INHIBITED NWD TRANSPORT OF RICH GULF MOISTURE INTO THIS REGION...DEW POINTS HAVE HELD IN THE LOWER TO MID 50S. IN ADDITION...CLEAR SKIES ARE DEVELOPING AHEAD OF SURFACE COLD FRONT NOW MOVING ACROSS CENTRAL MO/NWRN AR WHICH IS ALLOWING SURFACE-BASED CAPES FROM 500-1000 J/KG TO DEVELOP ATTM. AS FURTHER HEATING OCCURS...SBCAPES SHOULD APPROACH 1500 J/KG IN THE NEXT FEW HOURS GIVEN THE VERY STEEP LAPSE RATES. THEREFORE...EXPECT WIDELY SCATTERED THUNDERSTORMS TO DEVELOP DURING THE LATE AFTERNOON OVER AR/MO AND DEVELOP/MOVE QUICKLY NEWD THROUGH THE EVENING. EXPECT THE THREAT OF SOME SEVERE HAIL TO ACCOMPANY THIS ACTIVITY...ALONG WITH ISOLATED DAMAGING WINDS. ..EVANS.. 03/12/01