2011 Joplin tornado
The tornado initially touched down just east of the Missouri-Kansas state line near the end of 32nd Street at 5:34 pm CDT (22:34 UTC) and tracked due east, downing a few trees at EF0 intensity. Eyewitnesses and storm chasers reported multiple vortices rotating around the parent circulation in that area. Civil defense sirens sounded in Joplin 20 minutes before the tornado struck in response to a tornado warning issued by the National Weather Service, but many Joplin residents didn't heed them. The tornado strengthened to EF1 intensity as it continued through rural areas towards Joplin, snapping trees and power poles and damaging outbuildings. Widening, the tornado then tracked into the more densely populated southwest corner of the city near the Twin Hills Country Club. It heavily damaged several homes at a subdivision in this area at EF1 to EF2 strength. The tornado continued to strengthen as it ripped through another subdivision just east of Iron Gates Rd. Numerous homes were destroyed at EF2 to EF3 strength at that location, and multiple vehicles were tossed around, some of which were thrown on or rolled into homes.
The now massive wedge tornado then crossed S. Schifferdecker Ave., producing its first area of EF4 damage as several small but well-built commercial buildings were flattened. Consistent EF4 to EF5 damage was noted east of S Schifferdecker Ave and continued through most of southern Joplin. Numerous homes, businesses, and medical buildings were flattened in this area, with concrete walls collapsed and crushed into the foundations. A large steel-reinforced step and floor structure leading to a completely destroyed medical building was "deflected upward several inches and cracked". Steel trusses from some of the buildings were "rolled up like paper", and deformation/twisting of the main support beams was noted. Multiple vehicles were thrown and mangled or wrapped around trees nearby. Several 300-pound concrete parking stops anchored with rebar were torn from a parking lot in this area and were thrown up to 60 yards away. Iowa State University wind engineer Parka Sarkar was able to calculate the force needed to remove the parking stops and found that winds exceeding 200 mph were needed to tear them from the parking lot.
2011 Joplin tornado
The now heavily rain-wrapped tornado continued at EF5 intensity as it crossed Range Line Road. In that corridor between about 13th and 32nd Streets, the tornado continued producing catastrophic damage as it was at its widest at this point, being nearly wide. As the tornado hit the Pizza Hut at 1901 South Range Line Road, store manager Christopher Lucas herded four employees and 15 customers into a walk-in freezer. With difficulty closing the door, he wrapped a bungee cable holding the door shut around his arm until he was sucked out and killed by the tornado. The tornado completely destroyed Walmart Supercenter No. 59, a Home Depot, and numerous other businesses and restaurants in this area, many of which were flattened. Numerous metal roof trusses were torn from the Home Depot building and were found broken and mangled in nearby fields. Cars that originated at the Home Depot parking lot were found hundreds of yards away. Asphalt was scoured from parking lots at Walmart and a nearby pizza restaurant, and large tractor-trailers were thrown up to 200 yards away. An Academy Sports + Outdoors store along Range Line sustained major structural damage, and a chair was found impaled legs-first through an exterior stucco wall at that location. A nearby three-story apartment complex was also devastated, and two cell phone towers were found collapsed onto the remains of the apartments. Numerous cars were thrown and piled on top of each other, 100-pound manhole covers were removed from roads and thrown, ground scouring occurred, and a Pepsi distribution plant was completely leveled in this area as well. Additional calculations of the manhole covers in Joplin by Parka Sarkar revealed that winds had to have exceeded 200 mph for the manhole covers to be removed. Many fatalities occurred in this area, and damage was rated as EF5.
Extreme damage continued in the area of Duquesne Road in southeast Joplin. Many houses and industrial and commercial buildings were flattened in this area as well. The industrial park near the corner of 20th and Duquesne was especially hard hit with nearly every building flattened. Several large metal warehouse structures were swept cleanly from their foundations, and several heavy industrial vehicles were thrown up to 400 yards away in this area. One of the many warehouses affected was a Cummins warehouse, a concrete block and steel building which was destroyed. The last area of EF5 damage occurred in the industrial park, and a nearby Fastrip gas station and convenience store was completely destroyed. Many homes were destroyed further to the east at EF3 to EF4 strength in a nearby subdivision, and East Middle School sustained major damage.