Some Warning Sirens Failed as Tornado and Straight-Line Winds Ripped Through Sioux Falls, South Dakota

As a tornado and straight-line winds blew off roofs and destroyed buildings Tuesday night in Sioux Falls, South Dakota, some of the city’s warning sirens appear to have malfunctioned. Sioux Falls Mayor Paul TenHaken said there was a “breach of protocol” with the city’s outdoor warning system, the Associated Press reported. The city is investigating.…