Drone video shows the power of a tornado's 120 mph winds in Alabama where a school bus was lofted onto a high school gymnasium.

Officails say 52 of Alabama’s 67 counties sustained damage from severe weather Saturday evening, but Shelby and Talladega counties were hit particularly hard in certain spots. A tornado threw a school bus onto the roof of Winterboro High School gymnasium as it tore through Talladega County on its way east.

At least seven tornadoes hit Alabama on Saturday, and that number will likely climb even higher later today. The National Weather Service plans to continue looking at storm damage and has several areas that will be visited by storm survey teams today (Monday).

Alabama was struck with possibly 17 tornadoes during Saturday's outbreak of severe weather, with the storms causing at least three fatalities and several injuries.