The Twister Caught in the Storm: Why was the Joplin tornado so unusually destructive?

EF5 winds estimated at 225 to 250 mph crossed Joplin, Missouri on May 22, 2011 along a path nearly a mile wide, moving at 20 to 25 mph, which kept rotational force sustained against every structure in the path for up to 38 minutes. Those conditions acted on a city where fewer than a third of newer homes had below-grade shelters and no building was required to meet tornado-resistant construction standards. Netflix’s 2025 documentary “The Twister: Caught in the Storm,” directed by Alexandra Lacey and produced by Raw, examines those conditions through the experiences of young Joplin residents caught in the storm on their high school graduation day.

The Storm’s Physical Characteristics

The National Weather Service rated the tornado EF5, the highest classification on the Enhanced Fujita scale. That rating requires survey evidence of near-total destruction of well-built structures. NWS meteorologist Bill Davis and researchers at the University of Colorado Boulder estimated peak wind speeds of 225 to 250 mph, well above the 200 mph threshold for EF5. The tornado touched down west of Joplin at approximately 5:34 p.m. CDT on a Sunday and remained on the ground for 38 minutes, covering 22.1 miles across Newton and Jasper counties.

At its widest, the funnel measured 1,760 yards, close to a mile across. It entered Joplin’s southwestern edge at EF3 intensity and rapidly escalated as it crossed into dense residential and commercial zones. Eyewitnesses and storm chasers reported multiple smaller vortices rotating around the parent circulation during the tornado’s early stage. Those satellite vortices create localized spikes in wind speed, which accounts for why some structures in the path were reduced to foundations while adjacent ones suffered only partial damage.

The tornado’s forward speed of 20 to 25 mph, documented in the NWS Central Region service assessment, meant each structure in the path faced sustained rotational winds rather than a brief pass. That prolonged contact is one reason damage surveys documented complete destruction across entire city blocks rather than sporadic impact.

Buildings That Could Not Resist the Wind

A NIST investigation deployed to Joplin three days after the tornado found that no national performance-based construction standards existed for tornado-resistant building design. NIST issued 16 recommendations, including calls for uniform national standards and for tornado shelters in multi-family and commercial buildings capable of accommodating 200 to 300 people at a time, because such shelters were largely absent.

The lack of residential basements compounded the structural problem. Analysis of Joplin’s housing stock found that only 28 percent of newer homes had below-grade shelters. At the Home Depot on Range Line Road, seven people died when tilt-up concrete wall panels collapsed in a chain reaction after the roof was lifted. St. John’s Regional Medical Center, a nine-story building, sustained EF5-level damage and was later demolished. The Greenbriar Nursing Home was leveled, killing 21 residents. NIST also found that hospitals and critical facilities carried no requirement to remain operational during tornado events, a gap the report identified directly.

Over 7,400 residential structures were damaged, with more than 3,000 heavily damaged or destroyed outright. Total property damage reached approximately $2.8 billion, the costliest single tornado on record in the United States at the time.

The Warning System and Who It Reached

A tornado warning was issued at 5:17 p.m. CDT, 17 minutes before the tornado touched down west of the city. Civil defense sirens sounded roughly 20 minutes before the storm entered Joplin proper. A tornado watch had been in effect since 1:30 p.m., giving residents more than four hours of advance awareness of the developing risk.

The NWS service assessment found that many residents did not respond to the warnings. Contributing factors included a documented local belief that Joplin was protected by its geography, the practical shortage of accessible shelter for people without basements, and a siren pattern that had led some residents to disregard successive activations. Fifty-four percent of fatalities occurred in private residences.

The timing added a specific dimension that the documentary foregrounds. Joplin High School’s graduation ceremonies had taken place at Missouri Southern State University that day. The high school building was empty when the tornado destroyed it. The Class of 2011 was scattered across the city when the storm arrived in the late afternoon.

What the Documentary Shows

“The Twister: Caught in the Storm” centers on members of Joplin’s Class of 2011, whose graduation ceremony at Missouri Southern State University had concluded hours before the storm arrived, and builds its account from cellphone recordings, CCTV footage, and weather camera material alongside new survivor interviews. The film runs 88 minutes and was released on Netflix on March 19, 2025. Raw, the production company behind “Don’t F**k with Cats” (2019) and “The Tinder Swindler” (2022), produced the documentary.

Director Lacey’s connection to Joplin predated the documentary. She worked as a house designer on ABC’s “Extreme Makeover: Home Edition” during its Joplin build, the show’s series finale. Speaking to KSMU ahead of the film’s release, Lacey described wanting the film to be “about people with transformative stories of how that day had shifted them,” and said that when she learned the tornado had destroyed Joplin High School, she knew the story had to be told from the graduating class’s perspective.

Three main survivor accounts carry the documentary’s narrative. Cecil Cornish, then 17 and working at a Cherry Berry frozen yogurt shop when the storm hit, helped customers shelter and became a visible figure in Joplin’s recovery. Mac Wright and Kaylee Parker had been out the previous night and, using a weather app, tracked the developing storm before turning back to warn others. Keegan Tinney, another survivor featured in the film, stayed in Joplin and is now a personal injury lawyer.

The case the film identifies as medically exceptional belonged to Steven Weersing, then 16. Weersing was driving with friends when the tornado lifted his vehicle. He suffered a punctured lung, cracked ribs, and fell into a coma. He subsequently contracted mucormycosis, a fungal infection caused by Apophysomyces trapeziformis, a pathogen found in soil and organic debris that enters the body through penetrating trauma wounds. A 2012 study in the New England Journal of Medicine documented 13 cases of cutaneous mucormycosis among Joplin survivors who sustained wounds in heavily damaged areas, of whom five died. The outbreak was the largest known cluster of the disease following a natural disaster at that time. Weersing recovered; the film identifies him as “Miracle Boy.”

The Death Toll the Storm Left Behind

The mucormycosis cases placed the event’s final death count in dispute between sources. The NWS official tally is 158. The City of Joplin and NIST both count 161, incorporating additional indirect deaths including tornado-related fungal disease fatalities and a police officer killed by lightning while assisting with recovery the following day. Under any of those counts, the Joplin tornado was the deadliest single tornado on record in the United States since official record-keeping began in 1950.

The documentary holds a 76 percent Tomatometer score on Rotten Tomatoes from early reviews. Critics describe the structure as “propulsive and suspenseful” but note the film is lighter on context and factual detail than the scope of the event might warrant. That gap is where the physical record matters: the tornado’s death toll was not a product of wind strength alone. It was the outcome of extreme wind acting on buildings with no requirement to resist it, in a city without sufficient shelter infrastructure, and against a population the warning system reached with limited time and limited options. The human accounts in the film carry the weight they do because of a structural failure the documentary largely leaves in the background.