⚠️ Extreme Heat Warning – Sioux; O’Brien; Clay; Plymouth; Cherokee; Buena Vista; Woodbury; Ida; Dakota; Union – Monday, June 29, 2026

Extreme Heat Warning issued June 29 at 12:42AM CDT until June 29 at 9:00PM CDT by NWS Sioux Falls SD

Details

* 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.

Instructions

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.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.