U.S. storm triggers deadly tornadoes

At least 17 people have been killed by tornadoes as a huge storm system swept across the central and southern United States. Sixteen of the victims were in several suburbs of Little Rock in Arkansas, officials said. One other person was killed in the town of Quapaw in the north-east of Oklahoma where officials said many buildings were badly damaged. Tornadoes also struck in Nebraska, Kansas, Iowa and Missouri.
Background:
U.S. storm triggers deadly tornadoes [BBC]
Tornadoes slam several states; multiple deaths reported [CNN]