The National Weather Service in Salt Lake City has issued an Extreme Heat Warning for portions of southern Utah, warning that dangerously hot temperatures and warm overnight lows could create life-threatening conditions from Friday through Sunday.
The warning remains in effect from noon Friday until 9 p.m. MDT Sunday.
Forecasters say daytime high temperatures could reach 107 degrees, while overnight lows are expected to remain in the upper 60s to mid-70s, providing little relief from the heat.
The warning covers Lower Washington County, Zion National Park, South Central Utah, Capitol Reef National Park and surrounding areas, Western Canyonlands, and Glen Canyon National Recreation Area/Lake Powell. Included communities are St. George, Hurricane, Ivins, Springdale, Kanab, Escalante, Torrey, Loa, Hanksville, Bullfrog, and Big Water.
In the Salt Lake City area, temperatures are expected to reach 102 degrees Friday, 105 degrees Saturday, and 102 degrees Sunday.
According to the National Weather Service, the prolonged heat will significantly increase the risk of heat-related illnesses.
Officials warn against leaving children or pets unattended in vehicles, noting that interior temperatures can become lethal within minutes. Residents and visitors are advised to drink plenty of fluids, stay in air-conditioned buildings when possible, avoid prolonged sun exposure, and check on vulnerable relatives and neighbors.
Those spending time outdoors are urged to wear lightweight, loose-fitting clothing and limit strenuous activities to early morning or evening hours. The National Weather Service also cited Occupational Safety and Health Administration guidance recommending frequent rest breaks in shaded or air-conditioned areas for people working outdoors.
Heat stroke is considered a medical emergency. Anyone experiencing symptoms should be moved to a cool, shaded location immediately and 911 should be called.
