Heat warnings issued for Midwest, Southeast as sweltering temperatures continue

A significant heat wave is affecting the U.S. Southeast, with the National Weather Service issuing heat advisories from central Florida to Virginia, predicting temperatures in the upper 90s F and heat indexes reaching up to 115 F, impacting over 136 million people. Residents are advised to stay hydrated, avoid sun exposure, and take precautions against heat-related illnesses as several major cities face extreme heat risks through midweek.