At least six people have been killed and about 100 injured after several tornadoes ripped through northern Texas, local media reports.
The main scene of destruction is Granbury, south-west of Dallas, NBC reports.
Hood County sheriff Roger Deeds has warned the death toll could rise as 14 people remain unaccounted for.
Up to 100 people have been injured and about 75 homes in and around Granbury have been "totally destroyed", sheriff Deeds said, according to USA Today.
More to come.
© ABC 2013
12:38 EST Tropical Cyclone Jack has rapidly developed over the warm waters of the Indian Ocean in the past 24 hours, making it the 10th system to be named this season.