Moore tornado

Moore tornado
Name	Moore tornado
Date	May 20, 2013
Location	Moore, Oklahoma, United States
Scale	EF5
Fatalities	24
Injuries	>200
Damages	~$2 billion

Moore tornado

The Moore tornado struck the Moore area on May 20, 2013 as a violent tornado rated EF5 by the National Weather Service; it produced catastrophic damage across south-central Oklahoma, and prompted national responses from FEMA, American Red Cross, and the United States Department of Defense. The event became a focal point for debates in meteorology, urban planning, disaster medicine, and political science, and spurred changes in building codes, emergency management, and academic research at institutions such as the University of Oklahoma, Oklahoma State University, and the National Oceanic and Atmospheric Administration.

Overview

The tornado developed during a severe weather outbreak that affected the Southern United States and the Great Plains region; it struck near Moore, Oklahoma and traversed the southern suburbs of Oklahoma City, impacting neighborhoods, schools, and commercial districts. Major damaged sites included Plaza Towers Elementary School, Briarwood Elementary School, and the Cimarron Plaza area. High-profile figures such as Barack Obama, Mary Fallin, and Rick Perry publicly addressed the disaster, while organizations including Habitat for Humanity, Samaritan's Purse, and the American Red Cross mobilized relief efforts.

Meteorological history

Synoptic conditions involved a vigorous upper-level trough over the Rocky Mountains, a dryline along the Great Plains, and abundant low-level moisture from the Gulf of Mexico, producing strong wind shear and convective available potential energy (CAPE) favorable for supercells. The Storm Prediction Center issued a tornado watch and later a tornado warning as a discrete supercell thunderstorm intensified; the NWS Norman office confirmed the tornado’s EF5 intensity following damage surveys and radar analysis, including examination of Doppler radar velocity, dual-polarization radar signatures, and mesocyclone structure. Numerical models used in retrospective studies included the High-Resolution Rapid Refresh and WRF to simulate convective initiation and storm-scale dynamics.

Impact and damage

The tornado produced extreme structural failure consistent with EF5 damage, demolishing residences, strip malls, and public buildings; it destroyed a large portion of Plaza Towers Elementary School and heavily damaged Cimarron Plaza Shopping Center. Infrastructure impacts affected the Interstate 35 corridor and local utilities operated by Oklahoma Gas & Electric and regional water services; hospitals such as Integris Baptist Medical Center and OU Medical Center treated patients. Insurance claims involved companies including State Farm, Farmers Insurance Group, and Allstate, while economic assessments by entities like the Congressional Research Service and the Oklahoma Insurance Department estimated total losses near $2 billion and sparked federal disaster declarations under the Stafford Act.

Casualties and injuries

Twenty-four fatalities included children and adults from residential areas and schools; high-profile deaths at Plaza Towers Elementary School received extensive coverage by media organizations such as CNN, The New York Times, The Washington Post, BBC News, and Fox News. Over 200 people sustained injuries ranging from minor to life-threatening; treatment and triage protocols were implemented by emergency medical teams including the National Disaster Medical System and local EMS agencies. Survivors and families received assistance through programs administered by FEMA Individual Assistance and nonprofit groups like Team Rubicon and Doctors Without Borders that provided medical, psychological, and logistical support.

Emergency response and recovery

Local responders from the Moore Police Department, Moore Fire Department, Oklahoma Highway Patrol, and Grady County Sheriff’s Office coordinated search-and-rescue operations with federal assets including the United States Army National Guard and Urban Search and Rescue teams sponsored by FEMA US&R. Volunteer organizations such as The Salvation Army, United Way, and Convoy of Hope established shelters and distribution centers in collaboration with municipal leaders including Moore Mayor Glenn Lewis and Oklahoma Governor Mary Fallin. Reconstruction efforts involved municipal planning commissions, county emergency management agencies, and construction firms complying with updated codes influenced by studies from FEMA Building Science and the Insurance Institute for Business & Home Safety.

Investigation and analysis

Post-event investigations by the National Weather Service, academic teams from University of Oklahoma, Texas Tech University, and Purdue University, and research labs at NOAA and NCAR focused on damage assessment, radar signatures, and storm-scale dynamics; peer-reviewed articles appeared in journals such as Monthly Weather Review, Bulletin of the American Meteorological Society, and Weather and Forecasting. Engineering analyses by organizations including the FEMA Building Science group and the American Society of Civil Engineers examined failure modes in residential construction, anchoring practices, and the performance of safe rooms developed under ICC/NSSA 500 standards. Policy reviews addressed warning dissemination by the National Weather Service and media outlets like The Associated Press, examining the role of social media platforms such as Twitter and Facebook in public information.

Legacy and mitigation efforts

The tornado influenced revisions to Oklahoma state building codes, expansion of community storm shelter programs funded through federal grants administered by FEMA Hazard Mitigation Grant Program, and increased adoption of NOAA Weather Radio and smartphone alerting systems promoted by the National Weather Service and the Wireless Emergency Alerts system. Educational initiatives at schools, municipalities, and universities—including programs at University of Oklahoma School of Meteorology and Oklahoma State University Department of Emergency Management—emphasized preparedness, tornado-resistant construction, and community resilience. Memorials and policy legacies involve collaborations among civic leaders, advocacy groups, and scholars from institutions like the Brookings Institution and the RAND Corporation studying long-term recovery and hazard mitigation.

Category:Tornadoes in Oklahoma