Global insurance and reinsurance brokerage group Aon has announced the expansion of its automated incident response (AER) services to include severe convective storms (SCS) in the United States.
This enhancement is designed to help insurers better manage losses, deploy resources and respond quickly to policyholders during active weather events.
U.S. SCS has become one of the most volatile sources of catastrophe losses in the insurance industry.
According to Aon’s 2026 Climate and Catastrophe Insights Report, the South China Sea disaster is the costliest insured disaster of the 21st century, with cumulative insured losses of approximately $794 billion (before inflation).
In 2025 alone, U.S. SCS will cause $52 billion in insured losses, highlighting the need for faster loss intelligence during active events.
An expansion of Aon’s existing AER platform, which already covers disasters such as U.S. hurricanes, European storms and Japanese typhoons, the U.S. SCS service combines the broker’s latest SCS catastrophe model with daily weather data and storm reports.
This provides updated event loss estimates that are consistent with how insurers manage their portfolios, capital and business operations at the time of an event.
“In response to the ongoing loss pressure that SCS places on insurers’ profitability, the AER solution is designed to support faster, more confident decision-making during active events and in the critical days that follow,” explains Aon.
Adding: “By providing daily decision-ready loss and claims count estimates, AER can help insurers manage SCS volatility across underwriting, risk management, reinsurance and claims.”
As part of its key benefits, the solution enables faster and faster response times; it also provides a view of gross, ceded and net positions in reinsurance; it helps enhance stakeholder communications; and it enables operators to make clearer portfolio and pricing decisions around SCS tail risk.
“For insurers, severe convective storms are no longer isolated events, they are a source of ongoing volatility that is reshaping the way capital and claims decisions are made,” said Tracy Hatlestad, North America head of analytics at Aon Reinsurance Solutions.
“During active events and in the days that follow, carriers are under increasing pressure to act earlier, communicate clearly and understand their net positions, while loss information continues to evolve. Having daily decision-ready loss insights becomes critical to managing U.S. South China Sea risks with clarity and confidence.”
Aon’s AER services for US SCS include the following key features: daily modeled loss calculations; customizable event definitions consistent with contract structure; and dynamic updates 72 hours after the event
Aon’s AER is an important complement to Aon’s broader analytics and consulting services, helping clients improve the speed and efficiency of responding to ongoing disaster events by providing automated, daily loss insights directly to decision makers.
Aon highlighted that AER enhances existing modeling, claims and incident response processes to enable clients to respond faster, more coordinated and with more confidence.
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