Thirty million Americans under heat alerts stretching from Texas to Mississippi, severe storms swept across parts of Oklahoma, and a tornado slammed into Logan County, Arkansas. WATCH FULL EPISODES OF WORLD NEWS TONIGHT: abc.com/shows/world-news-tonight WATCH WORLD NEWS TONIGHT ON HULU: bit.ly/3iQLwPp #DangerousWeather #HeatAlerts #SevereStorms #Tornado #WorldNewsTonight