NEW : The campus was already closed because of Mardi Gras and was to remain closed through Tuesday ; classes were canceled through Wednesday . Hattiesburg tornado was packing 170 mph winds , weather report says . More than a dozen people are injured , including two critically ; no deaths are reported . Mississippi Sen . Phil Bryant declares a state of emergency for affected counties . About 4,000 people are without power , Mississippi Power says .
NEW : Hattiesburg tornado was packing 170 mph winds , weather report says . More than a dozen people are injured , including two critically ; no deaths are reported . Mississippi Sen . Phil Bryant declares a state of emergency for affected counties . About 4,000 people are without power , Mississippi Power says .