Authorities in Alabama say a team of forecasters will be surveying damage from what they say is almost certainly a tornado that injured four people in a Birmingham suburb.

National Weather Service meteorologist Mark Rose said Wednesday morning that forecasters were on their way to Bessemer to try and determine the strength of the likely tornado that struck Tuesday evening.

Rose told The Associated Press that forecasters have radar confirmation of the tornado, and they're "99 percent sure" it was a twister that caused the damage in the town about 15 miles southwest of Birmingham.

Jefferson County sheriff's Chief Deputy Randy Christian described the injuries as minor.

Jefferson County Emergency Management Director Jim Coker tells two of the injured were taken to hospitals, and two others were treated at the scene.

Christian says 12 homes sustained major damage.

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