The National Weather Service says four people died in Arkansas and Oklahoma as a result of the storms late Sunday and early Monday as nine tornadoes struck the Dallas area in Texas of USA.
The other Texas tornadoes had wind speeds ranging from 130 kph to 218 kph.
The National Weather Service has confirmed two tornadoes in far western Arkansas, as well as a pair of EF1 tornadoes that hit northeast Arkansas and Memphis, Tennessee.