US county disaster-exposure intelligence (monthly)

License unclearFresh

The full snapshot isn't published yet — check back after the next refresh.Download sample CSV Download sample JSONSample rows only (up to 20) — not the complete dataset.

Monthly county-level disaster-exposure intelligence from the keyless FEMA OpenFEMA DisasterDeclarationsSummaries v2 API (one row per designated area, no gazetteer needed — each area row carries its county FIPS). Trailing 60 complete calendar months, one row per (month, county_fips): distinct declaration counts by type (DR/EM/FM) and by assistance program (IA/PA/HM/IH), the shared 9-family incident taxonomy, the month's dominant family, max incident duration, look-ahead-free trailing-12-month recurrence features, and a documented 0-100 exposure_score (40% declaration-type weight + 20% program profile + 15% log-scaled duration + 25% recurrence) with within-month exposure_rank (1 = most exposed), exposure_tier e1..e4 quartiles, and a disaster_watch_flag. Finer-grained companion to the declaration-level dataset (same source, same taxonomy). Caveats: the score is a triage heuristic, not a damage estimate (the endpoint carries no obligation/cost figures); statewide ('000') designations are excluded from the county panel; per-area incident-type codes are not mapped; window edges carry shorter trailing lookbacks; tribal designations without county FIPS are excluded. Agent-curated: collection = keyless OpenFEMA API paged sweep; transformation = county resolution with fail-loud FIPS/identity gates + shared incident taxonomy + date arithmetic + recurrence features + documented scoring. FEMA records are U.S. federal government work under use-restricted terms (statistical research/reporting only) — commercial_use = unclear. Sample use: join exposure_score on (month_start, county_fips) to territory/order tables to model disaster-driven demand disruption and churn risk.

Source: FEMA county disaster exposure (agent-curated)
Rows: 6,777
Columns: 35
Source cadence: Monthly
Last refreshed: Sep 29, 2026
Theme: government

Column	Type	Description
month	string	Calendar month of the declarations (YYYY-MM). Trailing 60 complete months. (unit: YYYY-MM)
month_start	string	First day of the month (ISO date) — the panel's date join key. (unit: ISO date)
country_code	string	ISO alpha-3 country code (USA for every row). (unit: ISO 3166-1 alpha-3)
county_fips	string	5-digit county FIPS from the API's fipsStateCode+fipsCountyCode (fail-loud identity gate); the panel's geography join key. (unit: FIPS)
county_name	string	County label from the API's designatedArea (e.g. 'Hawaii (County)'); FIPS is the join identity. Normalized deterministically to the label of the latest declarationDate for the FIPS (alphabetical tie-break) — verified live 2026-09-29 against Alaska REAA sub-areas and one tribal designation sharing a county FIPS.
state_code	string	USPS postal state code; cross-checked against the FIPS state code (mismatch fails loudly).
state_name	string	State/territory name from the closed postal map (shared with the sibling connector).
tropical_cyclone_count	integer	Distinct declarations in the month whose incidentType maps to the tropical-cyclone family (Hurricane, Tropical Storm, Tropical Depression, Typhoon). (unit: declarations)
severe_storm_count	integer	Distinct declarations in the month mapped to the severe-storm family (Severe Storm, Tornado, Straight-Line Winds). (unit: declarations)
flood_count	integer	Distinct declarations in the month mapped to the flood family. (unit: declarations)
winter_storm_count	integer	Distinct declarations in the month mapped to the winter-storm family (Winter Storm, Snowstorm, Severe Ice Storm, Freezing). (unit: declarations)
wildfire_count	integer	Distinct declarations in the month mapped to the wildfire family. (unit: declarations)
earthquake_count	integer	Distinct declarations in the month mapped to the earthquake family. (unit: declarations)
landslide_count	integer	Distinct declarations in the month mapped to the landslide family (Mud/Landslide). (unit: declarations)
coastal_storm_count	integer	Distinct declarations in the month mapped to the coastal-storm family. (unit: declarations)
other_count	integer	Distinct declarations in the month whose incidentType falls outside the 8 mapped families (includes Biological/COVID-19). (unit: declarations)
dominant_family	string	Incident family with the most distinct declarations in the month (ties broken alphabetically). (unit: family name)
declaration_count	integer	Distinct FEMA declarations designating the county in the month (DR+EM+FM). (unit: declarations)
dr_count	integer	Distinct Major Disaster (DR) declarations in the month. (unit: declarations)
em_count	integer	Distinct Emergency (EM) declarations in the month. (unit: declarations)
fm_count	integer	Distinct Fire Management (FM) declarations in the month. (unit: declarations)
ia_designated_count	integer	Distinct declarations in the month with Individual Assistance designated for the county. (unit: declarations)
pa_designated_count	integer	Distinct declarations in the month with Public Assistance designated for the county. (unit: declarations)
hm_designated_count	integer	Distinct declarations in the month with Hazard Mitigation designated for the county. (unit: declarations)
ih_designated_count	integer	Distinct declarations in the month with Individuals and Households program designated for the county. (unit: declarations)
max_incident_duration_days	integer	Maximum incident duration in days across the month's declarations ((incidentEndDate or window end) - incidentBeginDate, floored at 0; elapsed-so-far for still-open incidents). (unit: days)
declaration_count_12m	integer	Distinct declarations designating the county in the trailing 12 calendar months (look-ahead-free; window edges use the available trailing panel months). (unit: declarations)
disaster_months_12m	integer	Distinct months with >= 1 declaration in the trailing 12 calendar months (look-ahead-free recurrence feature). (unit: months)
exposure_score	float	Documented 0-100 disruption-triage heuristic: 100(0.40max declaration-type weight [DR=1.0/EM=0.55/FM=0.35] + 0.20program breadth + 0.15log-scaled max duration + 0.25*trailing-12m recurrence). A heuristic, not a damage estimate. (unit: 0-100 score)
exposure_rank	integer	Within-month rank of exposure_score (1 = most exposed; ties by declaration_count desc, then county_fips asc). (unit: rank)
exposure_tier	string	Within-month score quartile: e1 (calmest) .. e4 (most exposed). (unit: tier)
disaster_watch_flag	integer	1 when the county has >= 2 declarations in the month, an IA designation, or exposure_score >= 75. (unit: binary)
as_of	string	Window end pinned to the first day after the trailing 60 complete months (identical for every row; same-month re-runs are hash-identical). (unit: ISO date)
source_url	string	FEMA OpenFEMA Disaster Declarations Summaries v2 data page (provenance). (unit: URL)
row_hash	string	Deterministic 16-hex sha256 over (month, county_fips, declaration_count, exposure_score) for idempotency.

First 10 sample rows — a preview, not the complete dataset.

month	month_start	country_code	county_fips	county_name	state_code	state_name	tropical_cyclone_count	wildfire_count	dominant_family	declaration_count	dr_count	em_count	pa_designated_count	hm_designated_count	ih_designated_count	max_incident_duration_days	declaration_count_12m	disaster_months_12m	exposure_score	exposure_rank	exposure_tier	disaster_watch_flag	as_of	source_url	row_hash
2021-09	2021-09-01	USA	06017	El Dorado (County)	CA	California	0	2	wildfire	2	1	1	2	1	0	68	2	1	67.84	1	e4	1	2026-09-01	https://www.fema.gov/openfema-data-page/disaster-declarations-summaries-v2	82347463b070c1a6
2021-09	2021-09-01	USA	34003	Bergen (County)	NJ	New Jersey	2	0	tropical-cyclone	2	1	1	2	1	1	2	2	1	64.88	2	e4	1	2026-09-01	https://www.fema.gov/openfema-data-page/disaster-declarations-summaries-v2	f6b15a8e5aa02fde
2021-09	2021-09-01	USA	34013	Essex (County)	NJ	New Jersey	2	0	tropical-cyclone	2	1	1	2	1	1	2	2	1	64.88	2	e4	1	2026-09-01	https://www.fema.gov/openfema-data-page/disaster-declarations-summaries-v2	a747d8832477c9bd
2021-09	2021-09-01	USA	34015	Gloucester (County)	NJ	New Jersey	2	0	tropical-cyclone	2	1	1	2	1	1	2	2	1	64.88	2	e4	1	2026-09-01	https://www.fema.gov/openfema-data-page/disaster-declarations-summaries-v2	10affde1f793081c
2021-09	2021-09-01	USA	34017	Hudson (County)	NJ	New Jersey	2	0	tropical-cyclone	2	1	1	2	1	1	2	2	1	64.88	2	e4	1	2026-09-01	https://www.fema.gov/openfema-data-page/disaster-declarations-summaries-v2	ac824fd0933ea41c
2021-09	2021-09-01	USA	34019	Hunterdon (County)	NJ	New Jersey	2	0	tropical-cyclone	2	1	1	2	1	1	2	2	1	64.88	2	e4	1	2026-09-01	https://www.fema.gov/openfema-data-page/disaster-declarations-summaries-v2	8d5cd8d8cd6a639d
2021-09	2021-09-01	USA	34021	Mercer (County)	NJ	New Jersey	2	0	tropical-cyclone	2	1	1	2	1	1	2	2	1	64.88	2	e4	1	2026-09-01	https://www.fema.gov/openfema-data-page/disaster-declarations-summaries-v2	307aa3ebb343de21
2021-09	2021-09-01	USA	34023	Middlesex (County)	NJ	New Jersey	2	0	tropical-cyclone	2	1	1	2	1	1	2	2	1	64.88	2	e4	1	2026-09-01	https://www.fema.gov/openfema-data-page/disaster-declarations-summaries-v2	b9ffa8f95562f6be
2021-09	2021-09-01	USA	34027	Morris (County)	NJ	New Jersey	2	0	tropical-cyclone	2	1	1	2	1	1	2	2	1	64.88	2	e4	1	2026-09-01	https://www.fema.gov/openfema-data-page/disaster-declarations-summaries-v2	d3fee83b39b29b32
2021-09	2021-09-01	USA	34031	Passaic (County)	NJ	New Jersey	2	0	tropical-cyclone	2	1	1	2	1	1	2	2	1	64.88	2	e4	1	2026-09-01	https://www.fema.gov/openfema-data-page/disaster-declarations-summaries-v2	584c41206cd45035

Point any LLM at the metadata endpoint — the documentation above is machine-readable too (JSON-LD + Croissant).

cURL

curl "https://datazimuts.com/v1/datasets/fema_county_disaster_exposure_intel/us_county_disaster_exposure_monthly" | jq '{title, rows, columns_count, license}'

Python

import requests

ds = requests.get("https://datazimuts.com/v1/datasets/fema_county_disaster_exposure_intel/us_county_disaster_exposure_monthly").json()
print(ds["title"], ds["rows"], "rows")

# Sample rows for an LLM context window
for row in ds.get("sample_rows", [])[:5]:
    print(row)

API endpoint: https://datazimuts.com/v1/datasets/fema_county_disaster_exposure_intel/us_county_disaster_exposure_monthly

Tip: fetch /llms.txt for the full machine-readable catalog.

Cite this snapshot

Pinned to snapshot 20260929T195202Z-59231720d955 and its content hash, so readers get exactly the data you used.

APA

FEMA county disaster exposure (agent-curated). (2026). US county disaster-exposure intelligence (monthly) [Data set, snapshot 20260929T195202Z-59231720d955, sha256 59231720d955]. Datazimuts. Retrieved 2026-09-30, from https://datazimuts.com/en/datasets/fema_county_disaster_exposure_intel/us_county_disaster_exposure_monthly?snapshot=20260929T195202Z-59231720d955

BibTeX

@misc{dz_fema_county_disaster_exposure_intel_us_c_59231720,
  title        = {{US county disaster-exposure intelligence (monthly)}},
  author       = {{FEMA county disaster exposure (agent-curated)}},
  year         = {2026},
  publisher    = {Datazimuts},
  howpublished = {\url{https://datazimuts.com/en/datasets/fema_county_disaster_exposure_intel/us_county_disaster_exposure_monthly?snapshot=20260929T195202Z-59231720d955}},
  note         = {Snapshot 20260929T195202Z-59231720d955, sha256 59231720d955e08f4a4c58488aa028cc65b81feb3297cb79abcebb67376dd868; accessed 2026-09-30}
}

Embed a table or a chart

Paste this into any page. The embed is pinned to the same snapshot, follows the reader's light or dark setting, and always shows the source, license and a link back.

Type

X axis

Value

Aggregate

Theme

HTML

<iframe src="https://datazimuts.com/embed/chart?dataset=fema_county_disaster_exposure_intel%2Fus_county_disaster_exposure_monthly&lang=en&theme=auto&snapshot=20260929T195202Z-59231720d955&x=month&y=tropical_cyclone_count&agg=avg" title="US county disaster-exposure intelligence (monthly)" width="100%" height="380" style="border:0" loading="lazy"></iframe>

US county disaster-exposure intelligence (monthly)

Follow this dataset

Cite this snapshot

Embed a table or a chart

Use your own AI key