US Cat Risk Reshaped as Wildfire and Storms Define 2025 Loss Profile: Swiss Re

Key Takeaways

• Secondary perils caused $86 billion of 2025 US insured losses.
• Wildfires alone generated $40 billion, a record high.
• Severe convective storms contributed $46 billion, third‑costliest year.
• Insured loss share rose to 71%, showing high penetration.
• Insurers must focus on mitigation, accumulation and land‑use decisions.

Pulse Analysis

The Swiss Re Institute’s latest sigma report underscores a fundamental transition in North American catastrophe risk. While traditional headline makers like hurricanes have long dominated loss narratives, 2025 demonstrated that secondary perils—wildfires and severe convective storms—now drive the bulk of insured damage. With $90 billion in total insured losses, of which $86 billion stemmed from these two hazards, the data reveal a structurally higher baseline that persists even in years lacking major tropical cyclones. This trend reflects both expanding exposure in the wildland‑urban interface and climate‑driven shifts that increase event frequency and intensity.

For insurers, the implications are profound. A 71% insured loss share signals that policy coverage is deep, yet the rising loss magnitude erodes profitability and challenges traditional pricing models. Companies must enhance accumulation analysis, integrating granular exposure maps that capture the growing concentration of assets in fire‑prone and storm‑vulnerable zones. Moreover, underwriting guidelines need to evolve, incorporating dynamic risk factors such as vegetation management, building codes, and real‑time weather analytics to better price and limit emerging threats.

Policymakers and property owners also have a pivotal role. The report highlights that mitigation—through stricter building standards, defensible space creation, and strategic land‑use planning—can materially reduce loss costs over time. Collaborative resilience programs that align insurers, governments, and communities can foster investments in fire‑resistant construction and advanced storm‑water infrastructure. As secondary perils cement their place at the forefront of catastrophe risk, a coordinated, forward‑looking approach will be essential to safeguard the built environment and stabilize the reinsurance market.