Details emerge about 3 University of Oklahoma meteorology students killed in crash after chasing tornado: "Unthinkable heartbreak"

More information is emerging about three University of Oklahoma meteorology students who were killed in a crash when their vehicle was struck by a tractor-trailer rig in northern Oklahoma late Friday. The students were travelling back from chasing a powerful tornado in Kansas, officials confirmed, and they had posted video of a twister just hours before they died.

Nicholas Nair, 20, of Denton, Texas; Gavin Short, 19, of Grayslake, Illinois; and Drake Brooks, 22, of Evansville, Indiana, died in the crash shortly before 11:30 p.m. Friday, according to an Oklahoma Highway Patrol report.

The three were in a vehicle being driven by Nair southbound on Interstate 35 when the vehicle hydroplaned in Tonkawa, about 85 miles north of Oklahoma City, the report said.