Mail was scattered over land and water when a U.S. Postal Service tractor-trailer was struck by a tornado on the northbound Sunshine Skyway Bridge approach Sunday morning.

The semi was northbound on I-275 at miler marker No. 7 just before 10 a.m. when a waterspout came ashore as a tornado and twisted the semi's trailer. A witness reported seeing the trailer lift off the ground.

The driver was not injured, according to the Florida Highway Patrol. Mail was being collected from the road, shoulder and water, according to witnesses.

Boater Matt Dwer captured the waterspout on video.

“I wanted to get closer,” he said, “but y'know I'm young and not very intelligent I guess but... I wanted to get the good shot, get up there and get close. That's all I was really thinking.”

Bay News 9 meteorologist Josh Linker noted that tornadoes are usually associated with thunderstorms, but was mainly a waterspout, and it was only associated with a small shower that had no lightning.

"It just happened to cross the road," he said. "If it didn't cross the road, nobody would even know about it except the people taking pictures. It was a really interesting and potentially scary situation."

This last photo shows mail strewn about along the shore and in the water off the northbound approach to the Sunshine Skyway Bridge.