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.

"The Cass County Sheriff’s Office extends its heartfelt sympathies to the victim's families, the community of Enderlin, and all other communities affected by this weekend's trag

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