A dangerous heat wave is set to blanket much of the central and eastern United States, with millions of residents under extreme heat warnings as temperatures soar into triple digits. Cities across the Midwest and Northeast are bracing for potentially record-breaking temperatures, with some areas experiencing heat indices feeling like 115 degrees. The heat dome is expected to create life-threatening conditions across 30 states, prompting officials to issue alerts and advisories. As the scorching weather continues into the weekend, residents are advised to take precautions against the brutal heat and humidity.