649 WWUS73 KFSD 290901 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 401 AM CDT Mon Jun 29 2026 IAZ012>014-020>022-031-032-NEZ014-SDZ071-291915- /O.CON.KFSD.XH.W.0001.000000T0000Z-260630T0200Z/ Sioux-O'Brien-Clay-Plymouth-Cherokee-Buena Vista-Woodbury-Ida- Dakota-Union- Including the cities of Le Mars, Beresford, Sheldon, Jefferson, Rock Valley, Sioux City, Spencer, Alcester, Hawarden, Ida Grove, Battle Creek, South Sioux City, Holstein, Sioux Center, Elk Point, Orange City, Sanborn, North Sioux City, Cherokee, Hartley, Storm Lake, and Hull 401 AM CDT Mon Jun 29 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 108. * WHERE...Portions of northwest and west central Iowa, northeast Nebraska, and southeast South Dakota. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. 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. && $$ SDZ038-039-050-052-053-057>059-063-064-291200- /O.NEW.KFSD.FG.Y.0009.260629T0901Z-260629T1200Z/ Beadle-Kingsbury-Gregory-Jerauld-Sanborn-Brule-Aurora-Davison- Charles Mix-Douglas- Including the cities of Platte, Alpena, Lake Preston, Chamberlain, Delmont, De Smet, Arlington, Wagner, Gregory, Corsica, Huron, Stickney, Marty, White Lake, Plankinton, Kimball, Armour, Wessington Springs, Burke, Lake Andes, Mitchell, and Woonsocket 401 AM CDT Mon Jun 29 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING... * WHAT...Visibility one quarter mile or less in dense fog at times. * WHERE...Portions of central, east central, south central, and southeast South Dakota. * WHEN...Until 7 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ IAZ001>003-NEZ013-SDZ062-066-067-069-070-291915- /O.CON.KFSD.HT.Y.0002.000000T0000Z-260630T0200Z/ Lyon-Osceola-Dickinson-Dixon-Minnehaha-Turner-Lincoln-Yankton-Clay- Including the cities of Canton, George, Lennox, Ponca, Inwood, Centerville, Marion, Chancellor, Irene, Sioux Falls, Spirit Lake, Wakefield, Tea, Sibley, Rock Rapids, Harrisburg, Hurley, Viborg, Allen, Vermillion, Arnolds Park, Parker, Yankton, Larchwood, and Milford 401 AM CDT Mon Jun 29 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... * WHAT...Heat index values 100 to 105 expected. * WHERE...Portions of northwest Iowa, northeast Nebraska, 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. Monitor the latest forecasts and warnings for updates. && $$ MNZ071-072-080-081-089-090-097-098-SDZ040-056-291915- /O.CON.KFSD.HT.Y.0002.260629T1800Z-260630T0200Z/ Lincoln-Lyon-Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock- Brookings-Moody- Including the cities of Flandreau, Brookings, Luverne, Lake Benton, Windom, Ivanhoe, Tyler, Marshall, Worthington, Lakefield, Mountain Lake, Hendricks, Slayton, Pipestone, Jackson, and Fulda 401 AM CDT Mon Jun 29 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM CDT THIS EVENING... * WHAT...Heat index values up to 104 expected. * WHERE...Portions of southwest Minnesota and east central South Dakota. * WHEN...From 1 PM this afternoon to 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ JH