A potentially fatal heat wave is set to impact 15 US states, with temperatures expected to soar between 100 and 110 degrees Fahrenheit and heat index readings climbing to as high as 120 degrees throughout the Southern and Central regions. States such as Texas, Oklahoma, Georgia, and the Carolinas are at the highest risk. Hospitals are gearing up for heat-related emergencies, and Texas's power grids may experience rolling blackouts.
