The world is witnessing a dramatic shift in the landscape of natural disasters, with severe convective storms (SCS) emerging as a formidable force. These storms, characterized by hail, damaging winds, and tornadoes, have become the costliest insured peril of the 21st century, reshaping the way insurers, investors, and asset owners assess and price risk. A recent analysis by First Street reveals a startling reality: SCS are not just localized events but systemic risks with global implications.
In 2025, SCS caused approximately $82 billion in global economic losses, accounting for nearly one-third of all worldwide natural catastrophe losses and surpassing the impact of any other peril. This trend is not merely a statistical anomaly; it's a harbinger of a changing climate and a growing challenge for the insurance industry. The cumulative insured losses from SCS have now exceeded those of tropical cyclones, marking a significant turning point in the history of natural disaster management.
The First Street report, titled 'Global Severe Convective Storm Risk: Pricing Economic Exposure to a Rising Peril,' offers a comprehensive analysis that goes beyond traditional catastrophe studies. It maps out the intersection of SCS hazards with dense populations and economic assets, revealing a rapidly expanding exposure. This research quantifies SCS as a systemic, portfolio-level financial risk, challenging the notion that these storms are localized and easily diversified away.
The numbers are staggering. Annually, damaging SCS winds expose $17.8 trillion in GDP (9.8% of global output) and 907 million people, with this exposure projected to grow by nearly 14% in the next 30 years. Damaging hail, another component of SCS, exposes $10.6 trillion in GDP (5.8% of global output) and 567 million people, with a similar upward trajectory. On a 1-in-20-year storm basis, a staggering 62% of global GDP is exposed to damaging winds, and 52% to damaging hail, underscoring the pervasive nature of these hazards.
The report further highlights the concentration of exposure across major economic corridors. The Americas bear the brunt of this risk, with 13.6% of regional GDP exposed annually to damaging winds and 11.2% to hail, the highest shares of any region. This exposure is driven by the unique overlap of severe-storm climatology with high-value insured assets in the United States, with Texas standing out as the single largest concentration of hail-exposed GDP globally.
In contrast, the Asia-Pacific region holds the largest absolute exposure, with $10 trillion in GDP exposed to damaging winds and $4.3 trillion to hail. This exposure encompasses globally significant manufacturing and logistics hubs, such as Jiangsu, Guangdong, and Taiwan. However, the report warns that climate change is expected to accelerate the expansion of damaging wind exposure, particularly in the Asia-Pacific region, with increases surpassing 18%, and across Europe, the Middle East, and Africa, with increases of approximately 14%.
This rapid intensification of SCS risks poses a significant challenge for markets that have traditionally seen minimal underwriting focus. Matthew Eby, CEO of First Street, emphasizes the shift in perspective, stating, 'For too long, severe convective storms have been priced as background noise. This research shows that SCS is a recurring, correlated risk sitting on top of trillions of dollars in GDP. Making that visible is the first step to pricing it correctly.'
Dr. Jeremy Porter, Chief Economist at First Street, underscores the implications for investors, lenders, and insurers, stating, 'Severe convective storm exposure is concentrated in the most productive parts of the global economy, and it's expanding. The takeaway is clear: SCS can no longer be treated as a secondary peril. It belongs in due diligence, stress testing, and long-term asset performance assumptions alongside hurricanes and wildfires.'
In conclusion, the analysis by First Street serves as a wake-up call, urging the insurance industry and policymakers to reevaluate their approach to SCS risks. As these storms continue to intensify and expand their reach, the need for accurate pricing, robust risk management, and innovative solutions becomes increasingly urgent. The future of our global economy and the resilience of our insurance systems depend on our ability to confront this growing challenge head-on.
