A student, Tony Murillo, recorded some of the lecture on video as Barrese wrote on a chalkboard and stepped through flood water on the classroom floor.

"(The professor) casually continued on his lecture despite a tornado advisory and serious flooding in the room," said Murillo. "His actions are a testament to the dedication of UCSD's faculty."

"He did end up letting us out early," Murillo said.

Watch the video below.

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Former Fulton County election worker Ruby Freeman talks to her daughter, Wandrea ArShaye "Shaye" Moss, a former Georgia election worker, after she testified before the U.S. House Select Committee at its fourth hearing on its Jan. 6 investigation on Capitol Hill in Washington, D.C., on Tuesday, June 21, 2022. (Yuri Gripas/Abaca Press/TNS)

Credit: TNS