WWUS61 KLWX 281141 WCNLWX WATCH COUNTY NOTIFICATION FOR WATCHES 247/251 NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 741 AM EDT THU APR 28 2011 DCC001-MDC003-005-009-013-017-021-025-027-031-033-037-510-VAC003- 013-047-059-061-079-099-107-113-125-137-153-157-177-179-510-540- 600-610-630-683-685-281900- /O.CAN.KLWX.TO.A.0247.000000T0000Z-110428T1200Z/ /O.NEW.KLWX.TO.A.0251.110428T1141Z-110428T1900Z/ THE NATIONAL…