Sioux Falls Faces A Sizzling Heat Advisory This Afternoon

The National Weather Service has issued a Heat Advisory for much of eastern South Dakota, including Sioux Falls, in effect this afternoon and evening until 8:00 PM Tuesday (July 22).

Hot weather is back in the Sioux Empire this week. Plus, we have some moist, humid air mixing with that heat, making things generally unpleasant outside. The humidity will push the heat index into the triple digits.

TIPS: What is Heat Stroke and How to Prevent it?

"While high temperatures today will be seasonally hot, from the upper 80s to mid 90s, dew point temperatures in the mid and upper 70s will make it very difficult for the body to cool itself. Stay safe out there today!" The National Weather Service said Tuesday.

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URGENT - WEATHER MESSAGE
National Weather Service Sioux Falls SD
323 AM CDT Tue Jul 22 2025

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-221800-
/O.NEW.KFSD.HT.Y.0003.250722T1800Z-250723T0100Z/
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 Rock Rapids, Rock Valley, Storm Lake,
Howard, Mountain Lake, Sioux City, Vermillion, Canistota,
Brookings, Chancellor, Allen, Parker, Viborg, Lennox, Wagner,
Slayton, Sanborn, South Sioux City, Hendricks, Madison, North
Sioux City, Ivanhoe, Lake Preston, Marshall, Chamberlain, De
Smet, Arlington, Holstein, Delmont, Armour, Irene, Bridgewater,
Sibley, Hawarden, Scotland, Milford, Wessington Springs, Menno,
Springfield, White Lake, Jefferson, Elk Point, Spirit Lake,
Kimball, Ida Grove, Harrisburg, Inwood, Tyndall, Luverne, Tabor,
Spencer, Yankton, Sheldon, Centerville, Cherokee, Tyler, Windom,
Le Mars, Beresford, Woonsocket, Platte, Mitchell, Lakefield,
Hartley, Freeman, Salem, Jackson, Fulda, Plankinton, Sioux
Center, Montrose, Hurley, Marty, Tea, Huron, Alcester, Lake
Andes, Marion, Lake Benton, Battle Creek, Clayton, Stickney,
Sioux Falls, Emery, Hull, Worthington, Orland, George, Wakefield,
Canton, Avon, Burke, Gregory, Corsica, Larchwood, Ponca, Tripp,
Pipestone, Alpena, Parkston, Arnolds Park, Alexandria, Orange
City, and Flandreau
323 AM CDT Tue Jul 22 2025

...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM CDT THIS
EVENING...

* WHAT...Heat index values up to 105 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 8 PM CDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses.

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.

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.