Pierre, SD – Dangerous heat is expected to spread across much of central and north-central South Dakota on Sunday, prompting the National Weather Service to issue a Heat Advisory for dozens of counties as heat index values climb into the triple digits.
According to the National Weather Service in Aberdeen, the advisory will be in effect from 1 p.m. to 9 p.m. CDT Sunday (noon to 8 p.m. MDT in western portions of the advisory area). Heat index values are forecast to reach 104 degrees across parts of central South Dakota, while other areas could see values as high as 101 degrees.
The advisory includes Pierre, Fort Pierre, Mobridge, Gettysburg, Murdo, Onida, Kennebec, Isabel, McIntosh and Herreid, along with surrounding communities in Hughes, Stanley, Sully, Jones, Lyman, Campbell, Corson, Dewey, Potter and Walworth counties.
Additional counties under the advisory include Brown, Buffalo, Edmunds, Faulk, Hand, Hyde, McPherson and Spink, affecting communities such as Aberdeen, Redfield, Miller, Highmore, Faulkton, Eureka, Ipswich and Fort Thompson.
Forecasters warn that the combination of high temperatures and humidity will increase the risk of heat-related illnesses, especially for older adults, young children, outdoor workers and anyone without access to adequate cooling.
Residents are encouraged to drink plenty of water, remain in air-conditioned buildings whenever possible and avoid strenuous outdoor activities during the hottest part of the day. Those working outside should wear lightweight, loose-fitting clothing and take frequent breaks in shaded or cooled environments.
Anyone showing signs of heat exhaustion should be moved to a cooler location immediately. Heat stroke is a medical emergency, and residents should call 911 if symptoms become severe.
