Tornadoes are classified through the Enhanced Fujita, or EF, scale, which rates storms on a scale of 0 to 5 based on recorded wind speeds and damage reports. An EF-4 rating is among the most severe, second only to EF-5, which is defined as a tornado with wind speeds of more than 200 mph.

The Tangipahoa Parish Sheriff’s Office reports major damage from a likely tornado that moved through that area just after 12 p.m. Saturday. “At this time, we have major structural damage northeast of Kentwood,