Millions under heat alerts [eY7RyxZYsDO]
ABC News' Somara Theodore tracks the dangerous heat dome. SUBSCRIBE to GMA: SIGN UP to get the daily GMA Wake-Up Newsletter: To read the full story and others, visit FOLLOW: TikTok: Instagram: Facebook: Threads: X: Watch full episodes of GMA: Watch full episodes of GMA3: Watch full episodes of GMA First Look: