Severe Thunderstorm Warning issued July 17 at 4:42AM MDT until July 17 at 5:30AM MDT by NWS

…A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 AM CDT FOR SOUTHEASTERN DAVISON…SOUTHWESTERN MINNEHAHA…SOUTHEASTERN CHARLES MIX…BON HOMME…SOUTHERN MCCOOK…YANKTON…SOUTHERN HANSON…TURNER AND HUTCHINSON COUNTIES… At 542 AM CDT, severe thunderstorms were located along a line extending from near Emery to near Niobrara, moving east at 40 mph.