ZCZC SPCPWOSPC ALL WOUS40 KWNS 081936 KSZ000-OKZ000-MOZ000-NEZ000-090600- PUBLIC SEVERE WEATHER OUTLOOK STORM PREDICTION CENTER NORMAN OK 430 PM CDT THU 08 MAY 2003 ...OUTBREAK OF SEVERE THUNDERSTORMS...INCLUDING A FEW STRONG TORNADOES AND VERY LARGE HAIL...EXPECTED OVER PARTS OF THE SOUTHERN AND CENTRAL PLAINS AND LOWER MISSOURI VALLEY LATE TODAY THROUGH TONIGHT... THE STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE DEVELOPMENT OF A FEW STRONG TORNADOES OVER A PORTION OF THE SOUTHERN AND CENTRAL PLAINS AND LOWER MISSOURI VALLEY LATE TODAY THROUGH TONIGHT. THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE: NORTHEAST KANSAS NORTHWEST MISSOURI EXTREME SOUTHEAST NEBRASKA NORTHERN AND CENTRAL OKLAHOMA MORE ISOLATED SEVERE THUNDERSTORMS WITH LARGE HAIL/HIGH WINDS AND POSSIBLE TORNADOES WILL AFFECT THE REMAINDER OF EASTERN KANSAS ...EASTERN AND SOUTHERN NEBRASKA...IOWA...MISSOURI...ILLINOIS... AND CENTRAL TEXAS. ISOLATED STRONG TO SEVERE STORMS WILL ALSO AFFECT PARTS OF THE LOWER OHIO AND TENNESSEE VALLEYS. A STRONG JET STREAM DISTURBANCE NOW OVER THE CENTRAL ROCKIES IS NOW LIFTING NEWD INTO THE CENTRAL PLAINS...AS ITS ASSOCIATED LOW PRESSURE SYSTEM IN CENTRAL KANSAS MOVES TOWARD SOUTHERN IOWA BY TONIGHT. WARM AND VERY MOIST AIR IS NOW IN PLACE AHEAD OF A DRY LINE BECOMING WELL DEFINED OVER CENTRAL KANSAS AND CENTRAL OKLAHOMA. THIS AIR MASS WILL LIKELY CONTINUE DEVELOPING SLOWLY NORTHWARD INTO SOUTHERN NEBRASKA BY THIS EVENING AS A WARM FRONT BECOMES ESTABLISHED NEAR THE NEBRASKA/KANSAS BORDER. THUNDERSTORMS WILL FORM OVER CENTRAL AND WESTERN KANSAS AND CENTRAL OKLAHOMA THIS AFTERNOON AND EARLY THIS EVENING...WHICH WILL DEVELOP EAST-NORTHEASTWARD THROUGH THE EVENING AHEAD OF THE SURFACE LOW AND DRY LINE. THE STORMS WILL BE STRENGTHENED BY THE JET STREAM DISTURBANCE...AND WILL HAVE THE POTENTIAL TO PRODUCE STRONG TORNADOES AND VERY LARGE HAIL. THESE STORMS SHOULD SPREAD MAINLY EAST INTO MISSOURI LATER TONIGHT. THIS IS POTENTIALLY A VERY DANGEROUS SITUATION. THOSE IN THE THREATENED AREA ARE URGED TO REVIEW SEVERE WEATHER SAFETY RULES AND TO LISTEN TO RADIO AND TELEVISION AND NOAA WEATHER RADIO FOR POSSIBLE WATCHES...WARNINGS AND STATEMENTS THROUGH THIS EVENING. JEFF EVANS LEAD FORECASTER, STORM PREDICTION CENTER