(St. Francois County) The National Weather Service in St. Louis has confirmed that a tornado did indeed touch down over the weekend in St. Francois County. Melissa Mainhart is a meteorologist with the National Weather Service in St. Louis.
We asked Mainhart how they determined that this was a tornado and not just high winds.
Mainhart tells us that an EF 1 tornado contains wind of 86-110 miles per hour. Hear more with Mainhart below.