A 9-mile-long, EF-2 tornado touched down in Slidell on Wednesday with the 120 miles per hour wind speeds, bending metal beams and blowing off the roofs of apartment buildings, with the National Weather Service now upgrading the tornados severity. NWS previously reported the tornado that touched down as an EF-1, whose winds could be up to 110 mph. The weather agency upgraded that assessment on Thursday after surveying the path of the tornado, which damaged Northshore businesses, apartment buildings, houses, and trees.