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Displaying AFOS PIL: SWODY1 Product Timestamp: 2002-04-28 17:03 UTC
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250 ACUS01 KWNS 281703 SWODY1 SPC AC 281700 STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS. VALID 281630Z - 291200Z THERE IS A MDT RISK OF SVR TSTMS ACROSS PROTIONS OF OH...PA...NY... WV...KY AND TN TO THE RIGHT OF A LINE FROM 50 WSW CSV 40 SSW CKV 20 N HOP 35 SSW SDF 35 ENE LUK 15 SSW MFD 20 SW CLE 15 WSW ERI 20 NNE JHW 45 SE BUF 20 SSE ELM 25 ESE IPT HGR 25 E EKN BKW 45 SW BLF 30 NE TYS 50 WSW CSV. THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 20 NNE ECG 20 NNW SOP 45 E RMG 30 SW CBM 35 NNW HEZ 40 S ELD 20 SSW PBF 35 NNE MEM 35 S PAH 10 SSW OWB 45 NNE SDF 20 ESE DAY 35 W CLE ...CONT... 30 WNW SYR 25 ENE BDR. GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 15 SSW ART 10 SSE PSM ...CONT... 20 S CHS AUO 20 WSW LUL 30 E POE 30 S CLL 30 S AUS 45 W TPL 25 NNW ACT 30 N TYR 25 WSW HOT 55 SW JBR 35 N DYR 35 WSW OWB 30 NW SDF 25 WNW LUK 45 NNW MFD. GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 35 NE SUX 15 SSW FOD 25 SW LWD 10 WNW TOP 15 S EAR 35 SSE IML 10 WSW AKO 40 SSW 4FC 55 NW GJT 40 E SLC 45 ESE EKO 20 SSW TWF 40 NW JAC 55 S GCC 35 SSE RAP 35 N BUB 35 NE SUX. GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 15 S OTH 55 NNW LMT 30 NNW RNO 35 E SCK 45 S UKI. ...SYNOPSIS... STRONG UPPER LEVEL TROUGH WILL MOVE RAPIDLY EWD FROM THE GREAT LAKES EASTWARD INTO NY/SRN NEW ENGLAND TONIGHT. SURFACE COLD FRONT WILL PUSH THROUGH THE OHIO VALLEY MID/ATLANTIC STATES AS STRONG PRESSURE RISES SWEEP EASTWARD...BUT FRONT WILL MOVE SLOWER SEWD THROUGH THE TN/MID MS VALLEY AS UPPER SUPPORT PASSES WELL NORTH OF THE AREA. ...WIDESPREAD SEVERE WEATHER EPISODE EXPECTED THIS AFTERNOON/EVENING...ESPECIALLY ACROSS PORTIONS OF THE OHIO/TN VALLEYS... ...OH AND TN VALLEYS AND PA... MODERATE INSTABILITY AND STRONG ENVIRONMENTAL WINDS SHOULD SUPPORT A LINE OF SEVERE STORMS TO DEVELOP AND MOVE EWD ACROSS THE OH AND TN VALLEYS THIS AFTERNOON. THE UPPER LEVEL FORCING WILL BE STRONGER FROM OH EWD INTO PA AND 70-80 KT MID LEVEL WINDS WOULD SUPPORT MORE WIDESPREAD WIND DAMAGE AND SOME GUSTS GREATER THAN 80 MPH. STORMS ARE EXPECTED TO DEVELOP INITIALLY AS DISCRETE STORMS FROM OH SWWD INTO KY. STRONG 0-6 KM SHEAR OF 50-60 KT AND 0-1 KM SRH HELICITY NEAR 300 M2/S2 WOULD ALSO SUPPORT SUPERCELLS AND TORNADOES. ...NY SWD INTO THE MID ATLANTIC STATES... CLOUDS HAVE HELD DOWN TEMPERATURES THUS FAR THIS MORNING...BUT RAPID CLEARING WILL OCCUR DURING THE AFTERNOON. SURFACE LOW IS FORECAST TO TRACK THROUGH SRN NY INTO SRN NEW ENGLAND THIS EVENING. EXPECT A LINE OF STORMS TO MOVE ALONG TRAILING COLD FRONT WITH A THREAT OF MAINLY WIND DAMAGE. ...SERN AR EWD INTO NRN AL... AIR MASS WILL BE STRONGLY UNSTABLE WITH MLCAPES OVER 3000 J/KG. 30 KT DEEP LAYERED SHEAR WILL BE SUFFICIENT FOR SEVERE...BUT FORCING WILL BE WEAK AND MID LEVEL TEMPERATURES MAY WARM SLIGHTLY. HOWEVER...LOW LEVEL THERMODYNAMICS WILL SUPPORT LARGE HAIL/DAMAGING WINDS WITH ANY STORMS THAT DEVELOP. ..IMY.. 04/28/02
000 ACUS01 KWNS 281703 SWODY1 SPC AC 281700 STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS. VALID 281630Z - 291200Z THERE IS A MDT RISK OF SVR TSTMS ACROSS PROTIONS OF OH...PA...NY... WV...KY AND TN TO THE RIGHT OF A LINE FROM 50 WSW CSV 40 SSW CKV 20 N HOP 35 SSW SDF 35 ENE LUK 15 SSW MFD 20 SW CLE 15 WSW ERI 20 NNE JHW 45 SE BUF 20 SSE ELM 25 ESE IPT HGR 25 E EKN BKW 45 SW BLF 30 NE TYS 50 WSW CSV. THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 20 NNE ECG 20 NNW SOP 45 E RMG 30 SW CBM 35 NNW HEZ 40 S ELD 20 SSW PBF 35 NNE MEM 35 S PAH 10 SSW OWB 45 NNE SDF 20 ESE DAY 35 W CLE ...CONT... 30 WNW SYR 25 ENE BDR. GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 15 SSW ART 10 SSE PSM ...CONT... 20 S CHS AUO 20 WSW LUL 30 E POE 30 S CLL 30 S AUS 45 W TPL 25 NNW ACT 30 N TYR 25 WSW HOT 55 SW JBR 35 N DYR 35 WSW OWB 30 NW SDF 25 WNW LUK 45 NNW MFD. GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 35 NE SUX 15 SSW FOD 25 SW LWD 10 WNW TOP 15 S EAR 35 SSE IML 10 WSW AKO 40 SSW 4FC 55 NW GJT 40 E SLC 45 ESE EKO 20 SSW TWF 40 NW JAC 55 S GCC 35 SSE RAP 35 N BUB 35 NE SUX. GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 15 S OTH 55 NNW LMT 30 NNW RNO 35 E SCK 45 S UKI. ...SYNOPSIS... STRONG UPPER LEVEL TROUGH WILL MOVE RAPIDLY EWD FROM THE GREAT LAKES EASTWARD INTO NY/SRN NEW ENGLAND TONIGHT. SURFACE COLD FRONT WILL PUSH THROUGH THE OHIO VALLEY MID/ATLANTIC STATES AS STRONG PRESSURE RISES SWEEP EASTWARD...BUT FRONT WILL MOVE SLOWER SEWD THROUGH THE TN/MID MS VALLEY AS UPPER SUPPORT PASSES WELL NORTH OF THE AREA. ...WIDESPREAD SEVERE WEATHER EPISODE EXPECTED THIS AFTERNOON/EVENING...ESPECIALLY ACROSS PORTIONS OF THE OHIO/TN VALLEYS... ...OH AND TN VALLEYS AND PA... MODERATE INSTABILITY AND STRONG ENVIRONMENTAL WINDS SHOULD SUPPORT A LINE OF SEVERE STORMS TO DEVELOP AND MOVE EWD ACROSS THE OH AND TN VALLEYS THIS AFTERNOON. THE UPPER LEVEL FORCING WILL BE STRONGER FROM OH EWD INTO PA AND 70-80 KT MID LEVEL WINDS WOULD SUPPORT MORE WIDESPREAD WIND DAMAGE AND SOME GUSTS GREATER THAN 80 MPH. STORMS ARE EXPECTED TO DEVELOP INITIALLY AS DISCRETE STORMS FROM OH SWWD INTO KY. STRONG 0-6 KM SHEAR OF 50-60 KT AND 0-1 KM SRH HELICITY NEAR 300 M2/S2 WOULD ALSO SUPPORT SUPERCELLS AND TORNADOES. ...NY SWD INTO THE MID ATLANTIC STATES... CLOUDS HAVE HELD DOWN TEMPERATURES THUS FAR THIS MORNING...BUT RAPID CLEARING WILL OCCUR DURING THE AFTERNOON. SURFACE LOW IS FORECAST TO TRACK THROUGH SRN NY INTO SRN NEW ENGLAND THIS EVENING. EXPECT A LINE OF STORMS TO MOVE ALONG TRAILING COLD FRONT WITH A THREAT OF MAINLY WIND DAMAGE. ...SERN AR EWD INTO NRN AL... AIR MASS WILL BE STRONGLY UNSTABLE WITH MLCAPES OVER 3000 J/KG. 30 KT DEEP LAYERED SHEAR WILL BE SUFFICIENT FOR SEVERE...BUT FORCING WILL BE WEAK AND MID LEVEL TEMPERATURES MAY WARM SLIGHTLY. HOWEVER...LOW LEVEL THERMODYNAMICS WILL SUPPORT LARGE HAIL/DAMAGING WINDS WITH ANY STORMS THAT DEVELOP. ..IMY.. 04/28/02