Three people killed in North Dakota after tornado hits upper midwest

Officials say two men and a woman killed around town of Enderlin as region experiences powerful winds and hail

Powerful winds - including a tornado - that swept across parts of the upper midwest left three people dead and a regional airport heavily damaged, while nearly 150 million Americans were under a heat advisory or warning as the weekend warmed up in much of the US.

A complex storm system wreaked havoc in parts of North Dakota, northern Minnesota and northern Wisconsin, with reported tornadic activity, large hail and strong wind gusts, according to Brian Hurley, meteorologist with the National Weather Service's Weather Prediction Center.