Coastal Storm disasters in the United States

How common are Coastal Storm disasters in the U.S.?

FEMA has issued 2 federal disaster declarations classified as coastal storm between 2021 and 2022, affecting 2 states and territories. Each declaration represents a formal federal recognition that an event exceeded state and local response capacity, unlocking Public Assistance, Individual Assistance, or Hazard Mitigation Grant Program funding depending on the declaration class (DR, EM, or FM). Raw declaration counts therefore measure the federal response footprint, which is a lagging and thresholded indicator: smaller events handled entirely at the state level never appear, and declaration thresholds have been recalibrated over the dataset's multi-decade history.

This disaster type's footprint is thin and scattered across the map. The three states with the most coastal storm declarations on record are ME (1 declarations), LA (1 declarations), consistent with how narrowly this hazard type is geographically concentrated.

With so few declarations on record, the year-by-year pattern is necessarily sparse. The peak year on record was 2021, with 1 coastal storm declarations issued that single year, a clustering driven by major multi-state events and the federal government's declaration cadence. The most recent year on record is 2022, with 1 declarations. Trends over the 1+ year history reflect how infrequently this disaster type crosses the federal declaration threshold at all.