An EF1 tornado is the second weakest tornado on the Enhanced Fujita Scale. An EF1 will have wind speeds between 86 and 110 mph (138 and 177 km/h). The damage from an EF1 tornado will be moderate. On the now retired Fujita Scale, the tornado damage scale that the Enhanced Fujita Scale replaced, an EF1 tornado use to be an F1 tornado. An F1 tornado had wind speeds between 73 and 112 mph (117 and 180 km/h).
An EF1 tornado, the second weakest tornado on the Enhanced Fujita scale, will cause moderate damage. EF1 wind speeds will strip most of the materials off roofs. Mobile homes will be badly damaged and can be overturned. Exterior doors will be damaged, along with broken exterior windows.
Below is a list of the top 3 deadliest EF1 tornadoes between Feb 1st, 2007 and 2017.
Below are photos of some EF1 tornadoes throughout history.