Forecaster: Winds, Not Tornado Likely Caused Roof Collapse

A tribal official says a roof of a building collapsed on the Cheyenne River Indian Reservation during a storm, injuring four people.

Administrative officer Bobbi Jo Kraft with the Cheyenne River Law Enforcement Center says the building’s roof came down around 4:30 p.m. Wednesday in Cherry Creek.

Kraft says the 40 people who were temporarily trapped inside were part of the Cheyenne River Sioux Tribe, which was having its monthly meeting.

A meteorologist says straight-line winds and not a tornado likely caused a building’s roof to collapse on the Cheyenne River Indian Reservation during a storm.

Dave Hintz with the National Weather Service in Rapid City says thunderstorms were in the area. But he says radar did not indicate any wind rotation consistent with a tornado, though Cherry Creek is quite a distance from the nearest weather station.

Hintz says straight-line winds can easily hit 100 mph and often damage buildings when gusts get inside and push up on the roof. He says photos suggest that’s what happened Wednesday.