The weather service said the preliminary storm estimate for the Granbury tornado was an EF-4, based on the Fujita tornado damage scale.
A rash of tornadoes slammed into several small communities in North Texas overnight, leaving at least six people dead, dozens more injured and hundreds homeless. The violent spring storm scattered bodies, flattened homes and threw trailers onto cars.
At least six people were killed Wednesday after a tornado devastated parts of North Texas.
Authorities in North Texassay a 48-year-old woman called 911 to have a deputy deliver cigarettes to her home.