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The Actuary Whose Storm Models Haven't Missed in Eleven Years

An insurance actuary's seasonal storm-loss forecasts have landed within her stated range for eleven consecutive years. She insists that's a warning sign, not a triumph.

A satellite image of a large storm system over open water

Eleven storm seasons in a row, her model's projected loss range has held. Not exactly — no forecast is exact — but within the band she gives her underwriting team every spring, close enough that the streak has become something of a quiet legend inside the firm.

She is the first to say this should make people nervous, not impressed. A model that's never been wrong hasn't necessarily gotten smarter; it may simply not have been tested by the kind of season that breaks it yet.

The discomfort of a perfect record

Every year she runs a version of the model deliberately stressed with a worse season than anything in the historical record, specifically so the underwriting team has a number for the year the streak ends. So far, real seasons have never come close to that stress case — which she says is exactly the problem.

Insurance modeling rewards being right until the one year it doesn't, and the payout for that single miss can erase a decade of accurate years. She reviews her own model every winter looking for the specific weakness that eleven good years have been quietly hiding.

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