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.

At least three people were killed in North Dakota after severe weather swept across the region overnight, authorities said.The Cass County Sheriff's Office said it was dispatched to rural Enderlin, North Dakota,

Powerful winds — including a tornado — that swept across parts of the upper Midwest left three people dead and a regional airport heavily damaged, officials said Saturday.