 It was also the first EF4 tornado of 2014 in the United States as well as the first EF4 in Arkansas since May 25, 2011.The final rating of this tornado was a source of controversy, and the National Weather Service office in Little Rock noted that if this tornado occurred prior to the change to the Enhanced Fujita Scale in 2007, it likely would have been rated as an F5 due to numerous homes being swept clean from their foundations.However, it was revealed that almost every home in Vilonia lacked anchor bolts and were anchored with cut nails instead.