Grant County, Oklahoma: hazard history

FEMA declared 32 disasters that named Grant County between 1973 and 2021.

Most recent declarations

• DR-4587 2021 · Severe Ice Storm · Severe Winter Storms
• EM-3555 2021 · Severe Ice Storm · Severe Winter Storm
• DR-4575 2020 · Severe Ice Storm · Severe Winter Storm
• DR-4530 2020 · Biological · Covid-19 Pandemic
• EM-3462 2020 · Biological · Covid-19
• DR-4438 2019 · Severe Storm · Severe Storms, Straight-line Winds, Tornadoes, And Flooding
• DR-4256 2015 · Severe Storm · Severe Winter Storms And Flooding
• DR-4247 2015 · Severe Ice Storm · Severe Winter Storms And Flooding
• DR-4222 2015 · Severe Storm · Severe Storms, Tornadoes, Straight-line Winds, And Flooding
• DR-4109 2013 · Severe Storm · Severe Winter Storm And Snowstorm

Not counted above: 40 statewide declarations, which covered every county in Oklahoma. A declaration is a decision to send federal help, not a measure of how bad an event was. Records run from 1953. Source: FEMA OpenFEMA Disaster Declarations Summaries.

Records start in 1996. Damage is NOAA's estimate at the time, in nominal dollars, and is often rounded; it is not insurance claims data. A storm that crossed two NOAA zones in this county is recorded, and counted, once per zone. A storm filed against a forecast zone is counted in every county that zone covers, with the whole storm's damage; do not add these figures across counties.

NOAA storm event records in Grant County each year. The busiest year was 1997, with 46 records.

Years with no record are left out of the table, not shown as zero.

Costliest records

1. Ice Storm · Jan 30, 2002$25.0M
   NOAA name: NWS forecast zone · NOAA record 5277190
2. Tornado · May 24, 1998$2.0M
   NOAA name: Grant County · NOAA record 5668849
3. Ice Storm · Dec 27, 2015$363K
   NOAA name: NWS forecast zone · NOAA record 608099
4. Tornado · Mar 5, 2026$250K
   NOAA name: Grant County · NOAA record 1324864
5. Winter Storm · Dec 26, 2000$100K
   NOAA name: NWS forecast zone · NOAA record 5176958

Deadliest records

1. Heat · Aug 1, 20061 death
   NOAA name: NWS forecast zone · NOAA record 5530439

Each line is one NOAA record, linked to its page at NOAA. One large storm can appear more than once if NOAA recorded it in several zones of this county. Dollars are nominal.

The National Flood Insurance Program paid $110K on 8 claims in Grant County from 1986 to 2008.

A count of claims, not a rate: NFIP publishes no count of insured homes beside it, and most flood damage is uninsured. Nominal dollars. Records run from 1978 to 2024; claims filed without a county code are not on any county page. Source: FEMA OpenFEMA FIMA NFIP Redacted Claims.

A hazard vulnerability analysis rates each hazard for probability, impact, preparedness and response. Probability is the one column the county’s federal record can fill — NCEI storm events from 1996 to 2026 and FEMA declarations naming the county — and this is what it says for a facility here, on the 0–3 scale of the all-hazards structure surveyors expect. The other six columns are the facility’s own judgment about its building, and Calchis leaves them blank.

A dash means the record does not speak to that hazard; it is not a zero. Whether a finished document satisfies the CMS Emergency Preparedness Rule is the facility’s finding and its surveyor’s. Complete the HVA for a facility in Grant County — the technological, human and hazardous-materials rows, the six facility columns, the approval and the printed document — or read the sample analysis on that page first.

• Every figure is counted from public federal records held by Calchis: NOAA NCEI Storm Events, FEMA OpenFEMA Disaster Declarations, and FEMA NFIP claims. Nothing is modeled or estimated.
• NOAA files some events against a county and others against an NWS forecast zone, and publishes a code for both. Records are counted as Grant County by that code — county records by the county's own FIPS code, zone records through the National Weather Service's published list of which counties each zone covers. No name matching is involved. Of 705 records, 438 were filed against this county and 267 against a forecast zone covering it. A zone storm is counted in every county its zone covers, and its damage figure is the whole storm's, not this county's share — NOAA does not publish that split. So these figures describe this county; they must not be added up across counties. Left out: 1% of Oklahoma's NOAA records, which are marine zones or zones NWS does not map to a county.
• Counts last rebuilt from the source records on Sep 15, 2026.