Gov. Bob Riley toured the damage in the Albertville, Ala., area Monday. He said it appeared the tornado cut a path a half-mile to a mile wide from Albertville to Geraldine.
Riley said the damage is being assessed to request federal assistance and no determination has been made about reopening school.
An assessment by the National Weather Service showed that an EF-3 twister that hurt more than 30 people in Marshall and DeKalb counties Saturday night had peak winds of 140 mph.
The tornado was on the ground for about 18.5 miles and was three-quarters of a mile wide at its largest.