Several states in the central U.S. were hit hard overnight by a deadly storm that reportedly caused flash flooding and even destructive tornadoes.

A destructive weather event will continue for millions of people across the Mid-South on Thursday, with the marathon storm persisting until Sunday.

The possibility of severe weather remains in the forecast for Alabama both on Sunday and Monday. Tornadoes, damaging winds, hail and heavy rain will all be possible on both days, according to the National Weather Service. Forecasters added that the tornado threat is uncertain, but there is the potential for it to increase.

States like Arkansas and Missouri are experiencing severe flooding threats, prompting emergency declarations as heavy rains are expected