Watch From Inside a School Bus as Deadly Indiana Tornado Strikes

Just-released footage from the deadly tornado in Henryville, Ind. captures the moment the twister ripped through a school bus and sent it smashing into a building.

(Related: Terrifying Security Footage Reveals Moment Tornado Tore Apart Indiana High School)

A video camera aboard the school bus was rolling when the tornado hit, just moments after the bus driver and 11 elementary students fled to safety, according to Indiana's NewsCenter.

The video begins with a still-intact bus as wind and debris quickly swirl. Audio of the bus driver reveals her giving directions to students.

"A tornado is on the ground guys. Quiet! The tornado is on the ground," driver Angel Perry is heard saying. "Everybody stay together, all our group together, right now, go, go, go!"

According to Indianapolis ABC affiliate WRTV-TV, Perry was three miles from the school with the students on board when reports of a funnel cloud came in over the radio.

"I stopped the bus for a second, put my hands down and said, 'Dear Lord, what do I do?'" Perry told the station. She turned the bus around and headed back for the school, where she's heard counting students as they run into the building.

About three minutes later, the 36,000-pound bus was blown away, first slamming into a car and then lifted and carried across the road, where it crashed into a diner, WRTV reported.