# HEADLINE
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HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING
# DETAILS
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WHAT
Heat index values up to 105 expected.
WHERE
Portions of northwest and west central Iowa, northeast Nebraska, and south central and southeast South Dakota.
WHEN
From 1 PM this afternoon to 6 PM CDT this evening.
IMPACTS
Hot temperatures and high humidity may cause heat illnesses.
ISSUED AT
Friday, September 4, 2026 at 7:42 AM CDT
ISSUED BY
National Weather Service Sioux Falls SD
HEADER
URGENT - WEATHER MESSAGE
# PRECAUTIONARY/PREPAREDNESS ACTIONS
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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.
# AREAS AFFECTED
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Dakota, Yankton, Bon Homme, Buena Vista, Charles Mix, Cherokee, Clay, Dixon, Douglas, Hutchinson, Ida, Lincoln, O'Brien, Plymouth, Sioux, Turner, Union, Woodbury
Including the cities of Lake Andes, Hurley, Scotland, Tyndall, South Sioux City, Hawarden, Wakefield, Armour, Tea, Springfield, North Sioux City, Beresford, Corsica, Tripp, Holstein, Battle Creek, Marion, Le Mars, Harrisburg, Tabor, Platte, Sioux City, Ida Grove, Alcester, Hull, Lennox, Rock Valley, Elk Point, Orange City, Sheldon, Centerville, Chancellor, Wagner, Parkston, Cherokee, Freeman, Menno, Avon, Yankton, Canton, Parker, Vermillion, Jefferson, Viborg, Clayton, Delmont, Sanborn, Allen, Storm Lake, Marty, Sioux Center, Irene, Ponca, and Hartley