Was Joplin Tornado Really EF-5?June 11th, 2013 at 3:56 am by Bill Steffen under Bill's Blog, News, Weather
Joplin Tornado Damage from NBC. Click the pic. to enlarge. Here’s a very interesting article. A team of structural engineers toured the 22-mile long path of the Joplin Tornado and found “that more than 83 percent of the damage on May 22, 2011, was caused by winds of 135 mph or less, which is equal to the maximum wind speed of an EF-2 tornado. 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. The ASCE investigators found no EF-5 level tornado damage to buildings at all.” The Structural Engineers Association of Kansas and Missouri (SEAKM) report is available for free. It contains much the same observations and recommendations noted in this article. There are other reports which are notable; many more than the links below.
SEAKM report, May 2012: http://www.seakm.com/uploads/Joplin_Committee_Report_05262012.pdf