Officials in the US are assessing the damage from dozens of tornadoes that ripped through the country's southern states.

Tornadoes, flash floods and hail over the last few days have killed at least 40 people.  

Rescuers are still looking for survivors in the hardest hit state of North Carolina where 62 tornadoes touched down on Saturday night. 

Al Jazeera's Tom Ackerman reports

Source: Al Jazeera