331
WWUS73 KFSD 170631
NPWFSD

URGENT - WEATHER MESSAGE
National Weather Service Sioux Falls SD
131 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>071-171900-
/O.NEW.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 Arlington, Delmont, Mountain Lake, Sioux
City, Orland, Flandreau, Alpena, Tyler, Hawarden, Menno, Chamberlain,
Wagner, White Lake, Canistota, Parker, Irene, Tabor, Bridgewater,
Emery, Yankton, Platte, Slayton, Huron, Burke, Pipestone, Cherokee,
Allen, Lake Benton, Alcester, Marion, George, Marty, Sheldon,
Stickney, Jefferson, De Smet, Luverne, Plankinton, Lakefield,
Tyndall, Fulda, Chancellor, Windom, Madison, Clayton, Brookings,
Sioux Falls, Beresford, Salem, Marshall, Hendricks, Rock Rapids,
Inwood, Wessington Springs, Rock Valley, Wakefield, Ivanhoe,
Parkston, Alexandria, Le Mars, Battle Creek, Jackson, Kimball,
Harrisburg, Centerville, Orange City, Arnolds Park, Freeman,
Scotland, North Sioux City, Sanborn, Viborg, Lake Andes, Springfield,
Armour, South Sioux City, Worthington, Holstein, Howard, Avon,
Canton, Gregory, Woonsocket, Sibley, Tripp, Mitchell, Tea, Hull,
Spirit Lake, Larchwood, Milford, Ida Grove, Ponca, Sioux Center,
Montrose, Storm Lake, Lennox, Hurley, Spencer, Elk Point, Lake
Preston, Corsica, Hartley, and Vermillion
131 AM CDT Fri Jul 17 2026

...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM CDT THIS
EVENING...

* WHAT...Heat index values up to 100 expected.

* WHERE...Portions of northwest and west central Iowa, southwest
  Minnesota, northeast Nebraska, and central, east central, south
  central, and southeast 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.

&&

$$

IG