158 WWUS73 KFSD 171531 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 1031 AM CDT Fri Jul 17 2026 IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-098-NEZ013-014-SDZ038>040-050-052>071-180200- /O.CON.KFSD.HT.Y.0003.260717T1800Z-260718T0200Z/ Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee-Buena Vista-Woodbury-Ida-Lincoln-Lyon-Murray-Cottonwood-Nobles-Jackson- Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-Brookings-Gregory- Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-McCook- Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Lincoln-Bon Homme- Yankton-Clay-Union- Including the cities of Spirit Lake, Avon, Tyler, Alexandria, Wagner, Springfield, North Sioux City, Luverne, Lake Preston, Mountain Lake, Centerville, Allen, Holstein, Yankton, Sheldon, Jefferson, Platte, Cherokee, Hull, Ponca, Ida Grove, Lake Andes, Alcester, Burke, Kimball, Marshall, Huron, Salem, Canton, Hurley, De Smet, Tea, Menno, Pipestone, Harrisburg, Parkston, Bridgewater, Sioux City, Battle Creek, Parker, Le Mars, Viborg, Alpena, Irene, Fulda, Spencer, Canistota, Clayton, Freeman, Howard, Chamberlain, Arlington, Marty, Orland, Brookings, Hartley, Sioux Center, Ivanhoe, Woonsocket, Lakefield, Rock Valley, George, Milford, Madison, White Lake, South Sioux City, Marion, Vermillion, Stickney, Beresford, Sanborn, Flandreau, Slayton, Tyndall, Larchwood, Jackson, Scotland, Rock Rapids, Elk Point, Hendricks, Windom, Mitchell, Storm Lake, Wakefield, Orange City, Inwood, Arnolds Park, Emery, Hawarden, Sioux Falls, Wessington Springs, Worthington, Tripp, Chancellor, Tabor, Delmont, Gregory, Armour, Corsica, Lennox, Lake Benton, Sibley, Plankinton, and Montrose 1031 AM CDT Fri Jul 17 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... * WHAT...Heat index values of 95 to 102 are expected. * WHERE...Portions of northwest and west central Iowa, southwest Minnesota, northeast Nebraska, and central, east central, south central, and southeast South Dakota. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ Weisser