A confirmed tornado ripped the roof off of a building in North Fort Worth Thursday afternoon.
The National Weather Service said Friday morning that a "high-end EF0" tornado damaged Mercantile Plaza, which is part of a business park off Interstate 35W, near the 4500 block of North Sylvania Avenue, just north of the Coors Distributing Company.
It happened at about 4:15 p.m. as wind gusts up to 90 mph tore the roof from the building with people inside.
"At first, it was nothing," witness Julie Swift said. "Then the windows started to pop and within seconds, it was just roaring wind. Then we heard the roof come off."
The roof tore into several large pieces, flying into the air before landing in nearby a parking lot. Several vehicles were damaged.
"It had rained prior and then it had stopped raining," storm victim Gary Cox said. "Then shortly thereafter, you know, the wind picked up, there was stuff smacking against the windows. There was rotation outside, all kinds of debris everywhere."
There were no reports of injuries.
NBC 5's Ken Kalthoff contributed to this report.