The storm that hit Monmouth on Wednesday morning was an EF-1 tornado, with winds reaching an estimated 100 miles per hour.
That's according to the National Weather Service, which surveyed the damage and released its findings on Thursday afternoon.
The tornado was a maximum of 100 yards wide and traveled a path of 1.3 miles within the city limits. It was active from 8:25 to 8:27 a.m.
An EF-1 tornado is a moderate intensity tornado, with wind speeds between 86 and 110 miles per hour.
The tornado downed power lines and trees, and damaged several downtown buildings.
No injuries have been reported from the tornado.
There was also straight-line wind damage across Warren County, with estimated winds of 80 to 100 miles per hour. The weather service said a couple hundred trees were damaged or are completely down.
Outside of Monmouth near Ormande, the storm caused a train derailment. BNSF said 18 cars blew over and derailed. There were no injuries and no hazardous materials were involved.
Crews cleared the cars and repaired the main line, and trains were back in operation by 7 a.m. Thursday, according to BNSF.
Another EF-1 tornado was documented in Warsaw.
