ENTERPRISE, Ala. — Apparent tornadoes killed at least 13 people in Alabama yesterday, including eight at a high school where students were trapped under a collapsed roof, state officials said.

A State Emergency Management Agency spokeswoman, Yasamie Richardson, said eight fatalities “are in relation to the high school but whether they are all students or some students and teachers we’re not sure.”

House Speaker Seth Hammett, at the statehouse in Montgomery, announced that five people had died at Millers Ferry in western Alabama, where another apparent tornado tore into mobile homes.

Martha Rodriquez, 15, a sophomore, said she had left the school about five minutes before the storm hit. When she returned, a hall at the school had collapsed, she said.

“The stadium was destroyed and there were cars tipped over in the parking lot, and trees were ripped out. … It was just horrible,” she said.

The high school “appears to have been right in the path,” said Paul Duval, a meteorologist with National Weather Service in Tallahassee, Fla., which monitors southeast Alabama.

Another tornado struck Missouri, killing a 7-year-old girl and damaging homes and businesses.