Tropical Storm in the United States

How dangerous are Tropical Storm events in the U.S.?

The loss ranking is the stronger warning against reading frequency alone. Tropical Storm is #24 of 54 by event count but rises to #7 for combined property and crop damage. Its losses make up 4.4% of the catalog total, while its fatalities rank #13 and represent 2% of recorded deaths. Fewer events can still produce an outsized financial record.

The year-to-year record shows real volatility around a high baseline. The peak year on record was 2020, logging 714 events and $1.7B in property damage in a single calendar year. The most recent year in the dataset is 2025 with 10 events recorded. Across the full 11-year window, annual event counts reflect seasonal climate cycles (ENSO phases, active vs. quiet severe-weather years) and long-term shifts tied to a warming climate both help explain the swings.

Per event, this hazard is far more dangerous than its frequency suggests. It ranks #24 by how often it is recorded among the 44 hazard types with at least 100 events, but #9 by fatalities per event, at 65.9 deaths per 1,000 recorded events. Recorded damage averages $3.7M per event. A reader scanning total counts would underestimate the risk of encountering one.

Geographic exposure is heavily concentrated in a handful of high-severity states. The three states absorbing the largest share of events are Florida (767 events, 92 fatalities), Georgia (655 events, 28 fatalities), North Carolina (379 events, 25 fatalities), reflecting both physical geography (coastal exposure, plains corridors, terrain) and dense population sitting directly in harm's way. At the other end, states such as Delaware, Hawaii, American Samoa report far fewer events, a genuinely rare event outside the leading states, not merely an underreported one.

Human impact is a defining part of this hazard's NOAA record. Across 3,185 events, the database lists 210 fatalities and 71 injuries. PlainHazard places hazard types with at least 100 recorded fatalities in its very-high human-toll band. That is a descriptive grouping of this 2015-2025 catalog, not an official NOAA risk grade and not a statement about the severity of every individual event.

NOAA entries are reports filed by local National Weather Service offices. Counts therefore reflect both observed weather and reporting practice; they do not measure unreported events, household exposure, or the probability of a future event at one address.