722 WWUS63 KFSD 020449 WCNFSD WATCH COUNTY NOTIFICATION FOR WATCH 640 NATIONAL WEATHER SERVICE SIOUX FALLS SD 1149 PM CDT TUE SEP 1 2026 IAC021-035-041-059-093-119-141-143-149-167-193-MNC033-063-105- NEC043-051-SDC127-021000- /O.CON.KFSD.SV.A.0640.000000T0000Z-260902T1000Z/ SEVERE THUNDERSTORM WATCH 640 REMAINS VALID UNTIL 5 AM CDT WEDNESDAY FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 11 COUNTIES IN NORTHWEST IOWA BUENA VISTA CHEROKEE CLAY DICKINSON LYON O'BRIEN OSCEOLA PLYMOUTH SIOUX IN WEST CENTRAL IOWA IDA WOODBURY IN MINNESOTA THIS WATCH INCLUDES 3 COUNTIES IN SOUTHWEST MINNESOTA COTTONWOOD JACKSON NOBLES IN NEBRASKA THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST NEBRASKA DAKOTA DIXON IN SOUTH DAKOTA THIS WATCH INCLUDES 1 COUNTY IN SOUTHEAST SOUTH DAKOTA UNION THIS INCLUDES THE CITIES OF ALCESTER, ALLEN, ARNOLDS PARK, BATTLE CREEK, BERESFORD, CHEROKEE, ELK POINT, GEORGE, HARTLEY, HAWARDEN, HOLSTEIN, HULL, IDA GROVE, INWOOD, JACKSON, JEFFERSON, LAKEFIELD, LARCHWOOD, LE MARS, MILFORD, MOUNTAIN LAKE, NORTH SIOUX CITY, ORANGE CITY, PONCA, ROCK RAPIDS, ROCK VALLEY, SANBORN, SHELDON, SIBLEY, SIOUX CENTER, SIOUX CITY, SOUTH SIOUX CITY, SPENCER, SPIRIT LAKE, STORM LAKE, WAKEFIELD, WINDOM, AND WORTHINGTON. $$