Why climate change isn’t (yet) the deciding factor in the increase in SCS insured losses in the US
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When considering US weather-related catastrophes, few perils have generated as many column inches in recent months as severe convective storms (SCS). The first half of 2023 is on track to be one of the most expensive H1 on record for US SCS activity, both in terms of economic loss and insured loss.

The (re)insurance industry has been grappling with escalating US SCS losses for nearly two decades. While the impact of climate change is still be studied, Gallagher Re’s Analytics team suggest that two main factors are driving the estimated 11.5% annual increase in aggregate industry SCS losses:

  • Damageability: Aging housing stock and loss cost trends
  • Exposure: Housing increases and total insured value, population shifts, urban sprawl

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