Three people are dead and a regional airport has been heavily damaged after powerful winds including a tornado swept across the upper U.S. Midwest. Cass County Sheriff Jesse Jahner said at a

Three people are dead and a regional airport was heavily damaged after powerful winds, including a tornado, swept across the upper Midwest, while nearly 150 million Americans were under a heat advisory or warning.

The deaths came after a series of large and long-lasting storms moved through North Dakota and Minnesota Friday night.