Kansas State University canceled classes today after a tornado whipped through the campus overnight, damaging buildings and leaving downed power lines and debris. But the university went ahead with registration and orientation for new students.

The storm damaged a building that houses the university’s nuclear-research reactor, though Kansas State told federal regulators early today that the reactor was undamaged, the Reuters news agency reported. The university’s Wind Erosion Laboratory was flattened in the storm, and other academic buildings and a fraternity house were damaged as well.

The twister was one of several in a line of storms that killed two people elsewhere in the state, according to the Associated Press. The university said no injuries had been reported on the campus, but damages may exceed $20-million, the Wichita Business Journal reported. “Roofs have been damaged or torn off, windows have been blown out in many buildings,” said Tom Rawson, Kansas State’s vice president for administration and finance, in a written statement.

University officials arranged alternate locations so events for visiting freshmen could continue despite the storm damages. “Many of the students and parents who are attending orientation and enrollment are from out of town, so we felt it important to continue that program as scheduled,” said Bob Krause, vice president for institutional advancement, in a written statement. Summer-session classes are scheduled to resume on Friday, the university announced later. —Kate Moser

Updated at 11 p.m.