Iowa, Minnesota, Nebraska, South Dakota Severe Severe Thunderstorm Watch | Effective 09/01/2026 18:17

SEVERE THUNDERSTORM WATCH 639 REMAINS VALID UNTIL 11 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 3 COUNTIES IN NORTHWEST IOWA LYON PLYMOUTH SIOUX IN MINNESOTA THIS WATCH INCLUDES 2 COUNTIES IN SOUTHWEST MINNESOTA PIPESTONE ROCK IN NEBRASKA THIS WATCH INCLUDES 1 COUNTY IN NORTHEAST NEBRASKA DIXON IN SOUTH DAKOTA THIS WATCH INCLUDES 19 COUNTIES IN EAST CENTRAL SOUTH DAKOTA LAKE MINER MOODY SANBORN IN SOUTH CENTRAL SOUTH DAKOTA AURORA CHARLES MIX DOUGLAS GREGORY IN SOUTHEAST SOUTH DAKOTA BON HOMME CLAY DAVISON HANSON HUTCHINSON LINCOLN MCCOOK MINNEHAHA TURNER UNION YANKTON THIS INCLUDES THE CITIES OF ALCESTER, ALEXANDRIA, ALLEN, ARMOUR, AVON, BERESFORD, BRIDGEWATER, BURKE, CANISTOTA, CANTON, CENTERVILLE, CHANCELLOR, CLAYTON, CORSICA, DELMONT, ELK POINT, EMERY, FLANDREAU, FREEMAN, GEORGE, GREGORY, HARRISBURG, HAWARDEN, HOWARD, HULL, HURLEY, INWOOD, IRENE, JEFFERSON, LAKE ANDES, LARCHWOOD, LE MARS, LENNOX, LUVERNE, MADISON, MARION, MARTY, MENNO, MITCHELL, MONTROSE, NORTH SIOUX CITY, ORANGE CITY, ORLAND, PARKER, PARKSTON, PIPESTONE, PLANKINTON, PLATTE, PONCA, ROCK RAPIDS, ROCK VALLEY, SALEM, SCOTLAND, SIOUX CENTER, SIOUX FALLS, SPRINGFIELD, STICKNEY, TABOR, TEA, TRIPP, TYNDALL, VERMILLION, VIBORG, WAGNER, WAKEFIELD, WHITE LAKE, WOONSOCKET, AND YANKTON.