000 WWUS34 KSTL 280502 RRB SVSSTL ILZ070-280515- SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1202 AM CDT SUN APR 28 2002 ...SEVERE THUNDERSTORM WARNING FOR MARION COUNTY HAS EXPIRED... AT 1202 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA. A TORNADO WATCH CONTINUES FOR THE AREA. REMAIN ON THE LOOKOUT FOR ADDITIONAL THUNDERSTORM DEVELOPMENT...AND KEEP IN MIND THAT SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO WARNING.