Authorities in Missouri say three people died there, while three others were killed in car crashes during dust storms in Texas on Friday.
Six people are reported to have died as powerful storms hit large parts of the United States.
Authorities in Missouri say three people died there, while three others were killed in car crashes during dust storms in Texas on Friday.
Around 138 million people are at risk of severe weather in central and southern US states.
Tornado warnings are in place in parts of Illinois, Missouri, Arkansas, Mississippi, Indiana, and Kentucky.
In Missouri, where a state of emergency was declared on Friday, they are predicted to reach EF2 on the tornado strength scale, which requires wind speeds of between 113mph and 157mph.
Hail the size of baseballs were reported in Christian County, the US weather service said.
