Natural Disasters Trigger 69% Surge in Public Protests Across Latin America, New Research Finds
For Immediate Release
EMBARGO LIFTS APRIL 7, 2026
Study covering five major economies finds smaller communities face the longest economic recoveries, with damage persisting for up to four months
BUENOS ARIES, April 7, 2026 – When a natural disaster strikes a Latin American community, the damage doesn’t stop at downed power lines and flooded streets. A new study finds that disasters trigger a 69 percent spike in public protests in affected districts, a social fallout that emergency planners rarely account for and that current disaster response systems are not designed to address.
A forthcoming study in the journal Risk Analysis is among the first to measure the local economic and social impact of natural disasters across five of the region’s largest economies: Argentina, Brazil, Chile, Colombia and Mexico. Where most previous research has relied on country-level data collected annually or quarterly, this study uses monthly satellite measurements of nighttime light emission to track economic activity district by district, capturing community-level disruption that official statistics often miss.
“What we found is that the economic toll of a natural disaster does not fall evenly; smaller communities absorb the hardest hits and take the longest to recover,” said study author Fernando Antonio Ignacio González of the Universidad Católica del Norte and the National Scientific and Technical Research Council in Argentina. “Understanding exactly when and where impacts are felt is essential for directing the right resources to the right places at the right time. One-size-fits-all disaster response is not enough. Small communities and flood-prone regions need dedicated, faster-acting systems.”
Key Findings:
- During the first month following a natural disaster, economic activity drops immediately and measurably. Nighttime luminosity (the amount of artificial light generated on the Earth’s surface in the evening), fell by 18% on average and is an indicator of economic activity.
- Protests spike 69 percent, yet governments do not crack down. Public protests surge in the immediate aftermath of a disaster, with no corresponding increase in government use of force, including curfews, mass arrestor physical confrontations indicating a need for more integrated disaster management.
- Disaster type determines the timing of damage. Floods and other hydrological disasters cause immediate economic disruption, knocking out roads and shutting down businesses within the first month. Storms and droughts work through slower channels, with agricultural losses accumulating over months and the economic toll only becoming visible two to three months after the disaster begins. Earthquakes and other geophysical events showed no statistically significant economic decline in the data, a finding that González attributes, in part to the speed with which essential infrastructure is restored after seismic events.
- Chile leads in disaster exposure but is one of the leading countries in speedy recovery. More than a third of Chilean districts were affected during the study period, yet Chile rebounds more quickly than any other country studied. likely attributed to the county’s strict building codes, mandatory insurance requirements, pre-positioned emergency resources and macroeconomic stability that allows the government to deploy funds quickly. This contrasts in Argentina, where economic damage does not appear until roughly three months after a disaster but then persists for up to five months, a pattern linked to recurring fiscal crises, challenges in cross-governmental coordination and rapid urbanization that has concentrated populations in flood-prone areas. Brazil, Colombia and Mexico showed no statistically significant economic decline in the data. Long with other parameters, such as type of disaster and people affected. Monthly satellite measurements of nighttime light emission provided insights on development patterns and local economic activity. And lastly, protest and coercion variables were pulled from the Global Database of Events, Language, and Tone Project.
The study covered thousands of districts across the five countries and applied an event study design with an estimator built to handle the staggered and varied timing of disaster occurrences.
Recommendations for Regional Policymakers
- Develop disaster response systems tailored to the type and timing of each event, rather than applying uniform protocols across all disasters.
- Invest in resilience-building in small districts which face the longest recoveries and are least equipped to respond on their own.
- Incorporate conflict prevention and community engagement strategies directly into emergency management protocols to address the social tensions that follow disasters.
- Prioritize macroeconomic stability and fiscal preparedness as foundations of disaster resilience. The study’s findings suggest that a government’s ability to respond effectively depends heavily on whether it has the borrowing capacity and institutional resources to act quickly when disaster strikes.
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About Society for Risk Analysis
The Society for Risk Analysis (SRA) is a multidisciplinary, global organization dedicated to advancing the science and practice of risk analysis. Founded in 1980, SRA brings together researchers, practitioners, and policymakers from diverse fields including engineering, public health, environmental science, economics, and decision theory. The Society fosters collaboration and communication on risk assessment, management, and communication to inform decision-making and protect public well-being. SRA supports a wide range of scholarly activities, publications, and conferences. Learn more at www.sra.org.
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