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Canada Derecho to be one of costliest convective storm losses: Aon

The Derecho type event that drove a line of severe thunderstorms across southern parts of the Canadian provinces of Ontario and Quebec last week has the potential to be one of the most expensive insurance industry losses from the convective storm peril in the country.

The severe thunderstorms struck last Saturday and at one point almost a million homes were left without power as the Derecho system rolled through the region.

Wind gusts of more than hurricane strength were recorded, with recordings made up to 132 km/h, while reports said “extensive damage” was experienced across the region, with property and infrastructure damage widespread.


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