Engineering study reveals no EF-5 damage in Joplin

A study by the American Society of Civil Engineers of the damage done by the Joplin tornado in 2011 found most of the homes were so poorly built they were destroyed by winds of EF-2 strength or less, according to a story in the Joplin Globe.

While the tornado was rated an EF-5 by the National Weather Service, the ASCE study found no EF-5 damage in Joplin. The five-day study determined about 85% of the homes were destroyed by winds of 135 miles per hour or less.

Only 4 percent of the damage could be linked to an EF-4 tornado, which can have winds speeds ranging from 168 to 199 mph.