Download the storm and disaster data

Name: PlainHazard county and state storm and disaster tables
Creator: PlainHazard
License: https://creativecommons.org/publicdomain/zero/1.0/

FEMA publishes its disaster declarations file, Disaster Declarations Summaries (v2), as CSV at https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries.csv. PlainHazard's own tables join that file (loaded through October 2, 2026) with NOAA's storm record since 1950 and FEMA's risk index, one row per county or state, and are free to reuse under CC0.

FEMA's disaster declarations as CSV

The OpenFEMA API serves each dataset as JSON by default and as CSV when the address ends in .csv. Each row is one declared area of one disaster, so a disaster appears once for every county it names; count distinct disasterNumber values to count disasters. Add ?$top=100 to fetch a sample first.

https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries.csv

Source: FEMA OpenFEMA Disaster Declarations Summaries (v2); PlainHazard's copy is loaded through October 2, 2026.

PlainHazard's tables

County summary CSV, 3,266 rows · also as JSON

One row per county: FEMA declarations, the storm record and FEMA's risk rating.

Columns of plainhazard-county-summary.csv
Column	Meaning
`fips`	County FIPS code
`county`	County name
`state`	State code
`total_disasters`	FEMA declarations naming the county, since 1953
`major_disasters`	Of which major disaster (DR) declarations
`top_incident_type`	Most frequent FEMA incident type
`first_disaster_year`	Year of the first declaration
`latest_disaster_year`	Year of the latest declaration
`storm_events`	NOAA storm records on the county, 1950 on
`storm_events_1996`	NOAA storm records, 1996 on (all event types)
`storm_days`	Days with at least one storm record since 1950
`storm_days_1996`	Days with at least one storm record since 1996
`storm_days_per_1000_sq_mi_1996`	Storm days per 1,000 sq mi since 1996
`us_rank_per_area`	U.S. rank on that rate (counties of 100 sq mi or more)
`storm_deaths`	Deaths in the storm record
`storm_damage_2025usd`	Damage in the storm record, 2025 dollars
`nri_rating`	FEMA National Risk Index rating

County storm record by hazard CSV

One row per county and hazard group: records, days with a record, zone records, deaths, injuries, damage, first and last year.

Columns of plainhazard-county-hazards.csv
Column	Meaning
`fips`	County FIPS code
`state`	State code
`hazard`	Hazard group
`events`	Storm records
`days`	Days with at least one record
`zone_records`	Of the records, filed for a forecast zone covering the county
`events_10y`	Records in the last ten years
`deaths`	Deaths
`injuries`	Injuries
`damage_2025usd`	Damage, 2025 dollars
`first_year`	First year on record
`last_year`	Latest year on record

State storm record by hazard CSV, 837 rows

One row per state and hazard group: records, deaths, injuries, damage, counties with a record.

Columns of plainhazard-state-hazards.csv
Column	Meaning
`state`	State code
`hazard`	Hazard group
`events`	Storm records
`days`	Days with at least one record
`zone_records`	Of the records, filed for a forecast zone covering the county
`events_10y`	Records in the last ten years
`deaths`	Deaths
`injuries`	Injuries
`damage_2025usd`	Damage, 2025 dollars
`counties`	Counties with a record
`first_year`	First year on record
`last_year`	Latest year on record

Each county and state page also offers its own FEMA declarations as CSV: add .csv to the page address, for example /state/kansas.csv.

Source: NOAA NCEI Storm Events Database (revision 20260918, through June 30, 2026); FEMA OpenFEMA; FEMA National Risk Index (December 2025).

Reuse

The federal source files are public. PlainHazard's tables are released under CC0 1.0: use them for anything, no permission needed. Citing "PlainHazard (plainhazard.com), from NOAA and FEMA data" helps others find the source. The methodology explains how zone records are placed on counties and how damage is converted to 2025 dollars.