For two decades, Florida International University’s (FIU) Wall of Wind (WOW) has been at the forefront of research into extreme weather, providing valuable insights into how buildings and infrastructure can withstand hurricane-force winds. The facility is unique in the United States for its ability to simulate a Category 5 hurricane and test structures at full scale.
“The main beneficiaries of the work done at the Wall of Wind are the communities threatened by hurricanes and other extreme weather events,” said Arindam Gan Chowdhury, director of the NSF-funded NHERI Wall of Wind Experimental Facility, interim director of the International Hurricane Research Center (IHRC), and professor of civil and environmental engineering at FIU.
Chowdhury emphasized that WOW’s research goes beyond buildings, covering infrastructure such as traffic signals, power systems, bridges, and even natural environments like trees and coastal features. When these systems fail during storms, communities can experience severe disruptions.
WOW’s mission is to help scientists understand how hurricane-force winds affect both built and natural environments and use this knowledge to develop technologies that strengthen community resilience.
This year marks not only WOW’s 20th anniversary but also significant anniversaries for major hurricanes: Katrina in 2005 and Harvey and Maria in 2017. Katrina caused $201 billion in damages while Harvey resulted in $160 billion in losses; Maria was particularly deadly with an estimated 3,000 fatalities. These figures are adjusted for inflation to 2024 dollars. Other wind events like tornadoes have also had devastating effects—for example, a tornado outbreak in April 2011 caused about $14 billion in damages across three states.
WOW’s research extends to more common wind phenomena such as downbursts. Amal Elawady, associate professor at FIU, recently co-authored a study examining how trees can either protect or endanger homes during high winds depending on various factors including species type and tree placement. Her findings could soon influence insurance risk models to better inform homeowners about their specific risks during extreme weather events.
Since its inception after Hurricane Andrew devastated South Florida in 1992, WOW has grown from a mobile prototype with two fans to its current configuration: a twelve-fan wall capable of producing winds up to 157 mph. This capacity allows researchers worldwide—such as those from Politecnico di Milano who tested designs for Milan’s Bosco Verticale—to evaluate structural resilience under simulated storm conditions.
Research conducted at WOW has led directly to changes in building codes. For instance, early studies demonstrated that ring-shank nails provide stronger roof anchoring than smooth-shank nails—a change adopted by Florida’s building code in 2004. More recent work informed updates by The American Society of Civil Engineers (ASCE), including new guidelines for elevated homes and canopies like “Florida Rooms.” In recognition of these contributions, ASCE awarded WOW the Charles Pankow Award for Innovation in 2018.
Elaina Sutley from the University of Kansas noted: “We documented damage to dozens of elevated buildings after Hurricane Michael (2018). Thanks to the collaboration with the Wall of Wind staff, we were able to combine our fieldwork findings with wind tunnel experiments to quantitatively understand the impact of the gap underneath elevated buildings.” She added that new design provisions based on this research have made coastal elevated buildings safer since their inclusion into U.S. codes as of 2024.
Ioannis Zisis at FIU highlighted his work on canopy design: “My first proposal was in the 2016 version… My collaboration with colleagues in Canada led to a successful proposal that introduced new design guidelines for canopies in the 2016 and 2022 versions of the ASCE/SEI 7.”
WOW also plays a role in product development. The Aerodynamic Mitigation and Power System (AMPS), developed by Chowdhury and Andres Tremante at FIU, uses rooftop micro-turbines both to reduce destructive wind pressure on roofs during storms and generate renewable energy stored for later use or supplied back into electrical grids. “AMPS turns wind from a foe to a friend,” said Chowdhury.
Private companies regularly utilize WOW facilities for product testing under realistic conditions. Draper Inc., which produces outdoor shade systems, tested products there; Market Director Clint Childress explained they wanted scientific data backing their performance claims: “Then we found the wall of wind…to be able verify what our design could do.”
John Knezevich—president of Knezevich Consulting—commented on benefits seen by Bison Innovative Products following scientific testing at WOW: “Now Bison has something that’s truly proven by science…probably the number one thing that Wall Of Wind has accomplished…is advancing roofing industry which benefits Florida homeowners considerably because it directly reduces losses caused by wind damage.”
Looking ahead, FIU is leading efforts alongside several universities toward establishing NICHE—the National Full-Scale Testing Infrastructure for Community Hardening—which will be supported through National Science Foundation funding via its Mid-Scale Research Infrastructure program. When completed NICHE will allow full-scale testing against combined forces typical during major storms—including surge waves—in experimental settings larger than any currently available worldwide.
Arindam Chowdhury described NICHE as addressing critical challenges posed by natural hazards so communities remain resilient: “NICHE will enable discovery technologies innovative solutions foster resilient communities safer stronger more prosperous.”
The planned facility will include advanced digital simulation capabilities—a digital twin—allowing researchers virtual access alongside physical experiments; stakeholders would be able visualize mitigation strategies under realistic storm scenarios before implementation regionally.
Additionally this fall FIU plans unveil WOPDT—the Wind-Only Physical Design Testbed—with capability produce winds up-to-200 mph aiding further development towards NICHE completion future integration within NSF Natural Hazards Engineering Research Infrastructure network dedicated minimizing loss from disasters across U.S.-based university sites.
