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Natural Hazard Catastrophe Modelling

All insureds with exposures to catastrophic natural hazards are highly dependent on the results of catastrophe modelling.
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All insureds with exposures to catastrophic natural hazards are highly dependent on the results of catastrophe modelling, which underwriters use to define loss expectancies and the resulting premium for catastrophe coverage. This has become a key component of every property placement submission and in many cases is a driving factor not only in the pricing, but in market participation and terms and conditions. Many insureds also use modelling results to determine the limits that they choose to purchase and/or how to structure their risk transfer or retention program.

However, catastrophe models are highly sensitive to uncertainty driven by poor or missing data. When the quality of the data is addressed, there is a better quantification and qualification of the risk being considered. The underwriting process is closely associated with the CAT model outputs. If your organization is able to manage better the uncertainty in your CAT modelling, it can significantly increase the probability of a successful outcome of the underwriting process in relation to market conditions.

Recognizing the need for an innovative solution to the data quality issue, Marsh’s Advisory has taken our expertise in natural hazard risk assessment and developed a process focused on reducing the uncertainty in CAT modelling by improving the data inputs and outputs. By providing high quality modelling data, we are able to provide more accurate modelling results. When shared with the underwriting community, this more accurate information typically results in offers of preferred pricing and terms.

Our service provides underwriters with specific documentation validating the primary characteristics and secondary modifiers as well as special conditions for the sites identified as drivers of the portfolio average annual loss (AAL). The enhanced data permits underwriters’ teams to fully use all appropriate modifiers to reduce the uncertainty in the modelling process and utilize the proper vulnerabilities for an organization’s locations, which in many cases will result in lower loss expectancies for our clients.

In addition to supporting the underwriting process, we provide organizations with more accurate data upon which to base more informed decision making around risk priorities, risk management needs, and risk transfer allocations.

Service Highlights

Marsh’s Advisory natural hazards and analytics experts have developed an additional level of assessment in response to the recent focus by property underwriters on data quality. In today’s environment, it is imperative that organizations provide complete, accurate, and validated data in order to differentiate themselves to the underwriting community.

Catastrophe models are very sophisticated, with many primary and secondary modifiers considered in analyzing potential loss to physical structures, contents, and resulting business interruption. Supplying incomplete data to underwriters introduces uncertainty to modelling results. This uncertainty will increase the modelled loss estimates, which can result in increased premiums. It also negatively affects underwriting decisions by creating “uncertainty loading,” where an underwriter increases pricing to account for the level of unknowns in underwriting decisions. This ultimately increases premiums even further than the loss estimates taken alone would warrant. The property insurance markets have shown that they are very receptive to input data that can be verified.

Insureds should also conduct a technical analysis of their operational risk exposures in order to properly align and optimize the terms, conditions, limits, and sub-limits of their property insurance programs. Underwriters are placing greater emphasis on supply chain and business continuity planning, so the more detailed information your organization has the better. This type of information can also be utilized to further refine the modelled loss estimates as well as for cost-benefit risk management and risk transfer decision making.

The steps in the process include

  • Performing an initial modelling run to generate AAL results by location. This information can be obtained by analyzing previous modelling results.
  • Identifying the loss drivers in the portfolio.
  • Performing assessments, including plan reviews and site visits, for these loss drivers.
  • Incorporating the data gathered in the assessments into the modelling input data and remodelling the portfolio.
  • Developing a Construction and Coding Report for each of the facilities that documents the coding information for provision to the markets.

Additional deliverables include

  • An input datasheet containing the enhanced data from the site visits which can be provided to the insurance markets.
  • A report that details the assessment methodology and the results.

Applying Marsh’s Advisory process to your property portfolio can help you achieve your data quality and property insurance cost reduction objectives. It can also help you to make more informed decisions about your risk management priorities and program.

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