BISMARCK, N.D. (AP) — Two tornadoes that killed six people in North Dakota and New York each had wind speeds topping 100 mph and caused brief but widespread damage as they tore through largely rural areas, officials said.

Three people are dead in North Dakota, and tens of thousands are without power in northern Minnesota after powerful winds swept across the upper Midwest Friday and overnight Saturday.

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