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Oklahoma · FEMA + NOAA + National Risk Index

Grady County, OK

37 FEMA disaster declarations (1984-2025), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Severe Storm.

37
FEMA declarations
28
Major disasters
76
NRI risk · Relatively Low
Severe Storm
Top hazard

The verdict

Two federal records point in the busier direction for Grady County. Its 37 FEMA declarations are 15% above the Oklahoma county mean and exceed the count for 95% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it in the riskiest 24%, based on modeled expected annual loss, social vulnerability, and community resilience.

Riskiest 24%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
37
FEMA declarations vs 21 national county avg
229
NFIP flood insurance claims filed

FEMA's National Risk Index and its declaration registry are separate measures. This county's registry includes Fire Management Assistance (FM) records, which are not presidential disaster declarations, alongside Major Disaster (DR) and Emergency (EM) records.

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How does Grady County compare?

Grady County vs. all counties in this dataset

FEMA disaster declarations, all-time

37 Top 5% higher than 95% of 3,266 counties

This county 0 90 all U.S. counties FEMA tracks, bucketed by value

Each bar is a band; taller bars hold more counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source FEMA Disaster Declarations Summaries v2 · 2026-08-03

Grady County's FEMA Risk Index score

FEMA National Risk Index composite score vs. the Oklahoma county average

0/100100/100Oklahoma avg56/10075.7/100
FEMA National Risk Index composite score vs. the Oklahoma county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Grady County is led by Tornado (about $10.0M Expected Annual Loss, Historical Loss Ratio Very High), while Ice Storm carries the highest National Risk Index rating (Relatively High). EAL and risk score use different inputs; they need not agree.

Source: FEMA National Risk Index (December 2025 release) - Expected Annual Loss vs composite risk rating by hazard.

What does Grady County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 229 paid claims, totaling $5.0M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $21.6K average describes payments on recorded claims only, leaving uninsured damage and properties without a claim outside the measure.

The declaration register points in the busier direction. Grady County's 37 federal records stand 15% above the Oklahoma county mean of 32.2. That comparison describes how often federal action was recorded, including any Major Disaster, Emergency, and Fire Management entries shown on this page; it does not convert the count into future probability.

FEMA National Risk Index

This county sits among the highest-risk counties nationally on FEMA's National Risk Index, a composite score of 75.7/100 (Relatively Low). Expected Annual Loss is rated Relatively Low (roughly $34.0M in annualized losses). Social vulnerability reads Relatively Moderate and community resilience Relatively Moderate, both critical modifiers of realized harm here. Of the 18 hazards FEMA models, Ice Storm stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at an average of 1.3 times per year here, based on 88 historical events on record.

Declaration frequency

The FEMA register is busy by both local and national comparisons. It contains 37 entries for Grady County, including 28 Major Disaster records, 15% above the Oklahoma county mean. Across the 41-year span, that works out to 0.9 declarations a year. Severe Storm leads the file with 14 entries. Declaration type records the federal action taken, not every assistance program approved.

78 /100

Historical Activity Index

Very High historical activity

Grady County, OK · PlainHazard-derived composite from federal records

This 0–100 index is an explicit PlainHazard composite from FEMA declaration history only on the county surface (this DB has no county-level NOAA damage row) . It is not FEMA's National Risk Index, not a forecast, and not a safety, insurance, or preparedness rating. Open the calculator · Methodology

FEMA Declarations (1953–present) Very High
27/30

37 OpenFEMA declarations, full ingest window (1.8x national county average)

County Disaster Density High
14/25

37 declarations (1.1x state county average of 32)

Major Disaster Share Very High
19/25

28 of 37 declarations are major disasters (76%)

Hazard Diversity Very High
18/20

7 different disaster types declared in Grady County

Historical Declaration Activity

Activity Band

High

vs. Oklahoma Avg

+15%

State avg: 32.2

vs. National Avg

+79%

National avg: 20.7

Avg Per Year

0.9

Over 41 years

FEMA NRI 8-hazard radar - Grady County

Grady County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 25, Flood 25, Hurricane 8, Tornado 70, Wildfire 48, Drought 48, Heat Wave 48, Winter Storm 70. The simple mean of these eight displayed scores is 43 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 43 8-hazard mean
Grady County NRI risk profile FIPS 40051 · displayed-hazard mean 43/100
How to read this radar

Each axis: NRI risk rating (Very Low-Very High) on a 0-100 scale. Rounder = broad exposure; spiky = one or two hazards dominate.

FEMA Records

37

Very high volume

Major Disaster share

76%

Mostly major

NRI risk score

76

Relatively Low

Source: FEMA National Risk Index Per-county per-hazard ratings, December 2025 release

How often does each hazard strike Grady County?

FEMA's National Risk Index models a historical event count and an annualized frequency for each hazard type. Most hazards are expressed as modeled occurrences per year; FEMA expresses drought and heat-wave frequency as event-days per year. These modeled frequencies are not forecasts.

Hazard NRI Risk Rating Recurrence
Ice Storm Relatively High an average of 1.3 times per year
Tornado Relatively High an average of 1.3 times per year
Hail Relatively Moderate an average of 12 times per year
Wildfire Relatively Moderate roughly once every 209 years
Cold Wave Relatively Moderate an average of 1.7 times per year
Heat Wave Relatively Moderate 17 modeled event-days per year
Winter Weather Relatively Moderate an average of 8.9 times per year
Drought Relatively Moderate 42 modeled event-days per year
Earthquake Relatively Low roughly once every 640 years
Riverine Flooding Relatively Low roughly once every 1 years
Landslide Very Low roughly once every 3 years
Hurricane Very Low roughly once every 109 years
Lightning Relatively Low an average of 51 times per year
Strong Wind Relatively Low an average of 5.5 times per year

Source: FEMA National Risk Index Modeled annualized frequency; drought and heat wave use event-days/year, December 2025 release

Disaster Types

Severe Storm 14
Severe Ice Storm 11
Flood 4
Fire 3
Biological 2
Tornado 2
Hurricane 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Grady County's record, 38% of its declarations. In FEMA's vocabulary this covers convective weather: thunderstorm straight-line winds, large hail, and the multi-day outbreaks that often carry embedded tornadoes. Activity is heaviest in spring and summer, though the season varies by region.

These events behave differently from a hurricane on paper. Damage tends to be distributed along a storm track rather than concentrated on a coastline, and a declaration typically follows an outbreak that crossed several counties over a few days, not a single point of impact. Because the qualifying threshold is the cost of uninsured public and individual losses rather than storm intensity, two similar storms can produce a declaration in one year and none in another.

Declaration counts describe past federal action. They are a record of what was declared, not a forecast of future hazard probability.

Declaration Types

What DR / EM / FM mean

FEMA categorizes declarations as Major Disasters (DR), Emergencies (EM), or Fire Management Assistance (FM).

Major Disaster - 28 75.7%

of all 37 declarations

Emergency - 8 21.6%

of all 37 declarations

Fire Management - 1 2.7%

of all 37 declarations

FEMA Declarations Timeline

Year Declarations
2025 1
2021 3
2020 2
2019 1
2016 3
2015 1
2011 2
2010 3
2009 1
2008 2
2007 4
2006 1
2005 1
2003 1
2002 1
Show 6 earlier declaration years
2001 4
1999 1
1995 1
1993 1
1987 2
1984 1

Disaster Declarations

How the 37 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 37 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
5569 NORGE FIRE FM Fire 2025-03-15
4587 SEVERE WINTER STORMS DR Severe Ice Storm 2021-02-24
3555 SEVERE WINTER STORM EM Severe Ice Storm 2021-02-17
4575 SEVERE WINTER STORM DR Severe Ice Storm 2020-12-21
4530 COVID-19 PANDEMIC DR Biological 2020-04-05
3462 COVID-19 EM Biological 2020-03-13
4438 SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING DR Severe Storm 2019-06-01
4274 SEVERE STORMS AND FLOODING DR Flood 2016-07-15
4256 SEVERE WINTER STORMS AND FLOODING DR Severe Storm 2016-02-10
4247 SEVERE WINTER STORMS AND FLOODING DR Severe Ice Storm 2015-12-29
4222 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2015-05-26
1989 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2011-06-06
3316 SEVERE WINTER STORM EM Severe Storm 2011-02-02
1883 SEVERE WINTER STORM DR Severe Ice Storm 2010-03-05
1876 SEVERE WINTER STORM DR Severe Storm 2010-02-25
3308 SEVERE WINTER STORM EM Severe Storm 2010-01-30
1846 WILDFIRES DR Fire 2009-06-19
1735 SEVERE WINTER STORMS DR Severe Ice Storm 2007-12-18
3280 SEVERE WINTER STORMS EM Severe Ice Storm 2007-12-10
1718 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2007-08-24
Show 17 earlier declaration records
DR# Title Type Incident Date
1712 SEVERE STORMS, FLOODING, AND TORNADOES DR Severe Storm 2007-07-07
1707 SEVERE STORMS, TORNADOES AND FLOODING DR Severe Storm 2007-06-07
3272 SEVERE WINTER STORMS AND FLOODING EM Severe Ice Storm 2007-01-14
1623 EXTREME WILDFIRE THREAT DR Fire 2006-01-10
3219 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-05
1465 SEVERE STORMS AND TORNADOES DR Severe Storm 2003-05-10
1401 SEVERE WINTER ICE STORM DR Severe Ice Storm 2002-02-01
1384 SEVERE STORMS, FLOODING, AND TORNADOES DR Severe Storm 2001-06-29
1355 SEVERE WINTER ICE STORM DR Severe Ice Storm 2001-01-05
3158 SEVERE WINTER AND ICE STORM EM Severe Ice Storm 2000-12-28
1349 SEVERE STORMS AND FLOODING DR Severe Storm 2000-11-27
1272 OK, TORNADOES 5/3/99 DR Tornado 1999-05-04
1058 TORNADOES, SEVERE STORMS AND FLOODING DR Tornado 1995-06-26
991 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1993-05-12
794 SEVERE STORMS & FLOODING DR Flood 1987-07-09
778 SEVERE STORMS & FLOODING DR Flood 1986-10-14
693 SEVERE STORMS & FLOODING DR Flood 1983-10-26

Storm Events in Oklahoma

Statewide NOAA context only. PlainHazard does not currently attribute these state totals to Grady County.

Storm Type Events Fatalities Injuries Property Damage
Hail 5,894 0 1 $19.8M
Thunderstorm Wind 5,592 6 36 $199.5M
Drought 2,935 0 0 $0
Heat 2,134 7 428 $0
Excessive Heat 1,771 2 401 $0

Source: NOAA Storm Events Database State-level aggregated data, 2015-2025

NFIP Flood Insurance Claims

Total Claims

229

Total Paid

$5.0M

Avg Per Claim

$21.6K

Source: FEMA National Flood Insurance Program (NFIP) OpenFEMA Claims Data

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 75.7/100

Expected Annual Loss

Relatively Low

$34.0M/year

Social Vulnerability

Relatively Moderate

Community Resilience

Relatively Moderate

Hazard Risk Breakdown

Ice Storm Relatively High
Tornado Relatively High
Hail Relatively Moderate
Wildfire Relatively Moderate
Cold Wave Relatively Moderate
Heat Wave Relatively Moderate
Winter Weather Relatively Moderate
Drought Relatively Moderate
Earthquake Relatively Low
Riverine Flooding Relatively Low
Landslide Very Low
Hurricane Very Low
Lightning Relatively Low
Strong Wind Relatively Low

Source: FEMA National Risk Index (NRI) Ratings reflect relative scores among all US counties. Data: hazards.fema.gov/nri

The model's sharpest exposure here: Ice Storm

Ice storms load power lines and tree limbs with accumulating freezing rain until they fail. The characteristic cost is infrastructure and multi-day power loss across a wide area rather than structural damage to buildings, which is why their consequences often outlast the weather that caused them.

Worth noting for Grady County: the model and the federal record do NOT point at the same hazard. Ice Storm carries the highest modeled rating (Relatively High), while the county's declaration history is led by Severe Storm. That is not a contradiction, the two measure genuinely different things. Declarations record federal ACTION, which requires damage costly enough to exceed state and local capacity; the Risk Index models EXPECTED annual loss across all 18 hazards whether or not any declaration ever followed. A hazard can be the county's largest modeled exposure and never once have driven a declaration.

National Risk Index ratings are modeled estimates of expected annual loss, not predictions of what will happen in any given year.

Data-matched county comparisons

Grady County's closest FEMA peer: Richland County, ND

Comparisons use published FEMA declaration fields plus the National Risk Index composite for Grady County. Record similarity, not a safety rating.

How these peers are chosen

Cohort: Published U.S. county equivalents outside the source state or territory. Each metric keeps six ETL candidates; three unique destinations are shown after de-duplicating across axes. Declaration-volume ranking combines count and Major-disaster share and prefers a different leading incident type; Major-share ranks the Major fraction adjusted for volume; NRI ranks the modeled composite score only.

Retained FEMA snapshot feed for Grady County - capture-dated entries only.

Further reading for this county

Understanding disaster data

Grady County's NFIP claims file (229 claims) and FEMA declaration history measure different federal records - this guide separates them from modeled NRI risk.

More PlainHazard guides

Frequently Asked Questions

What is the most common disaster type in Grady County?
The most common disaster type in Grady County is Severe Storm, with 14 declarations. Other disaster types include Severe Ice Storm (11), Flood (4), Fire (3).
How does Grady County's FEMA declaration record compare with the Oklahoma average?
FEMA lists 37 declaration records for Grady County. That is 15% above the Oklahoma county mean of 32.2. Its count is also 79% above the national county mean of 20.7. A larger declaration history records more federal actions; it is not a forecast of the county's next hazard.
How many major FEMA disaster declarations has Grady County received?
Grady County has received 28 major disaster declarations, representing 76% of all 37 disaster declarations.
How many flood insurance claims has Grady County filed?
Grady County has 229 National Flood Insurance Program (NFIP) claims totaling $5.0M in payments, with an average of $21.6K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Grady County?
No. In Grady County, Ice Storm has the highest National Risk Index rating (Relatively High), while Tornado leads Expected Annual Loss at about $10.0M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Grady County?
The most active year for disaster declarations in Grady County was 2001, with 4 declarations. The county has FEMA disaster data spanning 1984 to 2025.
What is the FEMA National Risk Index score for Grady County?
According to the FEMA National Risk Index, Grady County, Oklahoma has an overall risk score of 75.7 out of 100 (Relatively Low). On social vulnerability the county rates Relatively Moderate; on community resilience, Relatively Moderate. The Expected Annual Loss (EAL) score is Relatively Low, representing $34.0M in annualized losses.
Which natural hazard poses the greatest risk to Grady County?
Based on FEMA NRI data, the highest-risk natural hazard in Grady County is Ice Storm (risk rating: Relatively High). Other significant hazards include Tornado (Relatively High) and Hail (Relatively Moderate). FEMA's modeled event frequency puts ice storm here at an average of 1.3 times per year, drawn from 88 historical events on record. These scores are based on FEMA's analysis of historical event frequency, exposed assets, and community vulnerability.
Data Sources & Methodology

Disaster declaration data comes from the FEMA OpenFEMA Disaster Declarations Summaries v2 API, which includes all federally declared disasters, emergencies, and fire management assistance grants.

Storm event data is sourced from the NOAA Storm Events Database (2015-2025), which tracks significant weather events including thunderstorms, tornadoes, floods, and winter storms.

Flood insurance data comes from the FEMA National Flood Insurance Program (NFIP) OpenFEMA claims dataset.

This data is provided for informational purposes only. FEMA disaster declarations represent federal response actions and may not capture all local emergencies or weather events.

What this means for Grady County

Grady County, OK has 37 federal declaration records, 15% more than the Oklahoma county mean of 32; its history sits in PlainHazard's high activity band.

  • Within this above-state-average declaration file, major disaster leads with 28 of 37 records; the category describes past federal action, not the next likely hazard. Oklahoma overview
  • The state benchmark and national rank point the same way: this count tops the Oklahoma mean and the totals for 95% of 3,266 U.S. counties. Most-disaster rankings
  • Use the data guide to separate this mid-volume insurance-claims file from declaration counts and modeled NRI risk. Disaster-data guide

An above-average declaration count records past federal responses; it does not predict the next event. Current warnings come from the National Weather Service and local emergency officials.

All federal data sources used on this page
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainHazard Editorial

Verify with FEMA → · Verify with FEMA NRI → · Verify with NOAA →

Every figure on PlainHazard is rendered directly from FEMA federal disaster data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or national statistics report, the data & editorial changelog, or report a data error.