Strong winds from a storm early on Saturday morning (April 29) in Oklahoma City, USA caused significant damage to homes and infrastructure.<br /><br />A video showed felled trees, mangled road signs and some metal bleachers which had smashed into the side of a home.<br /><br />Local authorities said the storm caused damage across the city, with the most serious problems being downed trees and power lines blocking streets, although homes and businesses were damaged too.