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Rainfall and Inland Flooding: The Hazard That Reaches Farthest

Wind and surge get the headlines, but freshwater flooding from rain is now the leading killer in U.S. tropical systems — and it strikes far inland, long after the wind is gone. Here's why, and how little water it takes to be deadly.

Published June 18, 2026 · 14 views

Wind and surge get the headlines, but in recent years the rain has become the deadliest part of a hurricane — and it kills people who thought they were safe because they live far from the coast. The hazard that's now number one Over the half-century from 1963 to 2012, rainfall-induced freshwater flooding caused about 27% of direct U.S. hurricane deaths — already the single most common cause. In the most recent decade that share has jumped to roughly 57%: today, more people die in tropical systems from freshwater flooding than from any other hazard. And most of it happens inland — historically…

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