Afghan Voice Agency (AVA): These storms, which started on Friday night and continued on Saturday, killed seven people in Tennessee, four in Arkansas, three in Indiana and four in Illinois. Other fatalities from Friday night and Saturday's storms were reported in Alabama and Mississippi.
Tornadoes have also destroyed homes and businesses, downed trees, and left thousands of people in the dark in at least eight US states.
In the latest incident, the roof of a theater in Illinois collapsed due to a storm. This incident happened during the concert of a music group, as a result of which one person was killed and 40 others were injured. According to the head of the Illinois Fire Department, the condition of five people injured in this incident is critical.
Authorities have said that rescue operations have begun and that the death toll may rise.
Tennessee officials have warned that weather conditions similar to Friday night are expected to return on Tuesday.
In some of these states, a state of emergency has been declared and the National Guard has been called in to help.
According to PowerOutage.us, more than 530,000 homes and businesses were without power by noon Saturday, more than 200,000 of them in Ohio.
Widespread storms also sparked wildfires in southern states, with officials in Oklahoma reporting nearly 100 fires. It is said that at least 32 people were injured and more than 40 houses were destroyed due to the fires.
The United States Weather Service has warned of the risk of tornadoes and hail in the northeastern states, including parts of Pennsylvania and New York.
Meanwhile, last week, a powerful tornado, accompanied by thunder and rain, damaged several cities in the southern state of Mississippi along a 60-kilometer path and killed at least 25 people.