Severe storms are sweeping across the central U.S., and forecasters warn tornadoes could turn dangerous across several states. On Thursday night, storms ripped through Oklahoma, and video from near the town of Fairview shows a large funnel lit by lightning. Authorities say a 47-year-old woman and her 13-year-old daughter died in a crash that appears to have been tornado-related. Storms could be even more intense Friday, as more than 7 million Americans are at the highest risk of severe weather in an area that includes the metropolitan areas of Kansas City, Missouri; Tulsa, Oklahoma; and Omaha, Nebraska.