Showers and thunderstorms, which could bring damaging winds and heavy rain, are expected before 1 a.m.
No injuries have been reported near the campus. Trees were down throughout the hilly city on a bluff overlooking the Mississippi.
Monroe County Coroner Alan Gurley identifies him as Roy Ratliff, 95. Alto is situated about 140 miles (225 kilometers) north of Houston. No fatalities were reported.
The same system caused damage in Columbus, Mississippi.
The tornado downed trees near the Mississippi State University campus. University spokesman Sid Salter said some debris, possibly carried by the tornado, was found on campus, but no injuries were reported and no buildings were damaged.
There are a lot of down trees and damage in the area. Flooding has also been reported. Trees were reported down in each location but there were no immediate reports of damage, injuries or fatalities.
The tree "flattened the auto like a pancake", said Capt. Alton Lenderman of the Angelina County Sheriff's Office. Capt. Alton Lenderman said the parents, who were in the front seats, were not injured.
Local emergency management officials say one person is dead after a tornado swept through a northern MS town late Saturday. Tornadoes in Texas killed two and destroyed homes.
Power poles and trees were knocked over and parts of buildings were left hanging across utility lines in Troy, located about 50 miles (80 kilometers) south of Montgomery.
The National Weather Service Storm Prediction Center is cautioning that, "Strong tornadoes are possible today into tonight from east Texas into MS, with the greatest threat expected between 2PM-8PM CDT". Crews were sent to survey the damage.