The grand opening of the Linn County Fair in Central City, Iowa, was disrupted on June 28 as attendees were forced to take cover when a tornado touched down nearby.

The tornado ripped through Prairieburg, injuring one woman after her garage collapsed, The Gazette reported. Trees and power lines were also felled in the area.

This video, shared by Calvin McBride, shows people at the Linn County Fair watching the tornado before someone yells, “Get out of here!” as the twister’s powerful winds take hold. Credit: Facebook/Calvin McBride via Storyful