Granbury, TX --Authorities in north Texas were sifting through the rubble Thursday left by the nation's most violent and deadly outburst of tornadoes in more than a year.
The storms left at least six people dead, dozens injured and scores of homes flattened.
Richland Hills Police Det. Tye Bell, an incident spokesman, said nearly 100 homes were destroyed and 250 people displaced by one twister that struck the subdivision of Rancho Brazos near Granbury, about 40 miles southwest of Fort Worth.
Damage to the subdivision reminded Bell of the destruction caused by the deadly tornados that struck Joplin, Mo., two years ago, though on a smaller scale. The Joplin tornado killed more than 150 people.
"There are houses here leveled to their foundations, cars thrown about," Bell said. "It's major damage."
Hood County Sheriff Roger Deeds said seven people remain unaccounted for.
The National Weather Service in Fort Worth, citing preliminary reports, said as many as 10 tornadoes touched down Wednesday night in north Texas.
The weather service damage survey team in Granbury, Texas, found "EF-4" damage on the Fujita Scale of Tornado Intensity -- wind speeds between 166-200 mph. EF-4 is the second-highest level on the scale.
The weather service were conducting damage surveys to determine the exact strength of the tornadoes.
Deeds said 37 people were treated at local hospitals. The injuries range from lost limbs to minor bumps and bruises, he said.
"We have never seen a community catastrophe with as many injuries as we did through last night," said Kyle McCombs, chief of staff at Lake Granbury Medical Center, where he has worked for more than 12 years.
Emergency teams rushed 18 bulldozers into the subdivision to clear the way for rescue teams and to look for people trapped in the debris. The city said 19 buildings and 17 mobile homes were destroyed. Another 59 buildings and two mobile homes were damaged.