Scorching temperatures have residents in several southern states sweating through the month of July.
While a number of heat advisories were dropped on Thursday, officials expect the dangerous heat to build back in for the weekend.
The National Weather Service says parts of Kansas, Missouri and Arkansas have become new hot spots and some places could see temperatures surpass 40°C through the weekend. The heat has been persistent in Oklahoma as well, where daytime highs have remained between 35 and 40°C for the last week.
Residents are flocking to community pools and beaches in hopes of cooling down. Several cooling centres have also been set up to provide some relief from the sweltering conditions.
A high demand for water usage has forced officials to issue a mandatory water restriction in Oklahoma City. Emergency authorities say there have been more than 200 people in Tulsa and Oklahoma City who have suffered heat- related illnesses.
Residents are urged to limit outdoor activities and stay hydrated as the extreme heat is expected to hang on into next week.