A powerful fall storm is sweeping across the southern United States, placing more than 50 million people in its path. Warm, humid air from the Gulf of Mexico is colliding with a powerful cold front, bringing threats of tornadoes and destructive winds.

As severe storms barrel towards the Midwest and South, millions find themselves in the path of potentially destructive weather. With threats of tornadoes, hail, and severe thunderstorms, communities are urged to stay vigilant and prepared.