Several tornadoes hit the state on Sunday afternoon, including a “monster tornado” that reached an estimated wind speed of 170 mph, according to the National Weather Service.

Officials estimated that the EF4 tornado was a mile wide and cut a path of destruction 24 miles long. It was the deadliest tornado outbreak since 2013, when an EF5 tornado killed 24 people in Moore, Oklahoma.

The deaths are also the first tornado-related fatalities in Alabama since November 2016, the National Weather Service said.