SPC AC 110053 STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS. VALID 110100Z - 111200Z THERE IS A HIGH RISK OF SVR TSTMS THROUGH TONIGHT OVER PORTIONS OF CENTRAL AND SOUTHERN OHIO...CENTRAL AND EASTERN KENTUCKY...WESTERN WEST VIRGINIA...FAR WESTERN VIRGINIA...FAR WESTERN NORTH CAROLINA...MIDDLE AND EASTERN TENNESSEE...MUCH OF NORTHERN GEORGIA...AND MUCH OF CENTRAL AND NORTHERN ALABAMA/MISSISSIPPI. THE HIGH RISK AREA IS TO THE RIGHT OF A LINE FROM 10 E HEZ 40 ESE MLU 30 NNW GWO 35 N BWG 35 SW CMH 25 SW CAK 25 E PKB 15 ESE TRI 10 E CSG 20 WSW LUL 10 E HEZ. SURROUNDING THE HIGH RISK AREA...THERE IS A MDT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 15 SSW ERI 25 S MGW 60 NNW AYS 35 ESE GPT 35 W LFT 50 W MLU 15 E MEM 30 NNE SDF 30 NE CLE 15 SSW ERI. SURROUNDING THE MDT RISK AREA...THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 30 ESE BPT 25 E SHV 30 NW MEM 15 ENE BMG 35 NNE MTC ...CONT...20 NNW ROC 20 SSE AOO 20 SW LYH 40 SSE AGS 10 SW AYS 20 WNW PFN. GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 20 SE BPT 15 NE SHV 20 SSW LIT 20 WSW ARG 40 S CGI 35 WSW BMG 20 W MIE 15 W FWA 35 S CGX 15 SSW RFD 25 SW LNR 25 SE LSE 20 W CWA 15 SSW IMT ANJ ...CONT... 25 E MSS 20 E GFL 15 NNE EEN 25 N HUL ...CONT... 10 ENE DAB 15 NW PIE. GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 20 NNE BLI 15 SE SEA 40 E DLS 25 WNW BKE 20 N 27U 35 E COD 35 NE CPR 25 SW GCK 10 SE GAG 25 E SPS 20 SE MWL 35 W ABI 40 WSW CVS 30 NNW ABQ 75 S 4BL 45 ENE ELY 10 NE BAM 55 SE 4LW 25 WSW LMT 4BK. -- SIGNIFICANT SEVERE WEATHER OUTBREAK EXPECTED TO CONTINUE THIS EVENING FROM ERN OH/WRN PA SWD ACROSS WV/KY TO THE TN VALLEY AND CENTRAL GULF COAST STATES -- ...SYNOPSIS... EARLY EVENING SURFACE ANALYSIS SHOWS A LOW PRESSURE AREA OVER SERN MI WITH A COLD FRONT TRAILING SWWD THROUGH WRN OH TO THE LOWER MS VALLEY AND ERN TX. A LARGE TROUGH WILL CONTINUE TO DEEPEN INTO THE GREAT LAKES AND MS VALLEY OVERNIGHT...AS AN UPPER SHORT WAVE TROUGH OVER THE UPPER MS VALLEY PHASES WITH A STRONG SRN PLAINS. THE COLD FRONT IS EXPECTED TO REACH WRN PA SWD TO ERN TN AND SWWD INTO THE LOWER MS VALLEY BY 11/12Z. ...LOWER GREAT LAKES/OH AND TN VALLEYS/CENTRAL GULF COAST... ONGOING WIDESPREAD SEVERE THUNDERSTORM EVENT WILL CONTINUE THIS EVENING AND OVERNIGHT FROM THE LOWER GREAT LAKES SWD THROUGH THE UPPER OH/TN VALLEYS TO THE CENTRAL GULF COAST STATES. SLY LOW-LEVEL FLOW IN ADVANCE OF THE COLD FRONT WILL CONTINUE TO ADVECT MOISTURE NWD INTO THE TN/OH VALLEYS AND SRN APPALACHIANS... KEEPING MODERATE INSTABILITY OVER THE MODERATE/HIGH RISK AREAS. STRONG WIND FIELDS EVIDENT ON 00Z RAOBS AND VADS CONTINUE TO SHOW A VERY FAVORABLE ENVIRONMENT FOR TORNADOES AND DAMAGING WINDS AS THE ONGOING SQUALL LINE WITH EMBEDDED SUPERCELLS MOVES QUICKLY EWD THROUGH THE UPPER OH AND TN VALLEYS. FARTHER SOUTH IN THE WARM SECTOR OVER THE CENTRAL GULF COAST STATES...A SEVERE WEATHER OUTBREAK IS UNFOLDING ATTM FROM ERN LA INTO NWRN AL. FAVORABLE LOW-LEVEL AND DEEP LAYER SHEAR PARAMETERS WILL SUPPORT SUPERCELLS WITH TORNADOES OVER THE CENTRAL GULF COAST STATES...POSSIBLY AS FAR EAST AS ERN GA AND THE WRN CAROLINAS LATE TONIGHT...AS THE UPPER TROUGH CONTINUES TO DIG INTO THE MS VALLEY. ..PETERS.. 11/10/02 NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED FOR 0600Z |