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Oklahoma · FEMA + NOAA + National Risk Index

Osage County, OK

42 FEMA disaster declarations (1971-2026), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Severe Storm.

42
FEMA declarations
30
Major disasters
78
NRI risk · Relatively Low
Severe Storm
Top hazard

The verdict

Two federal records point in the busier direction for Osage County. Its 42 FEMA declarations are 30% above the Oklahoma county mean and exceed the count for 97% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it in the riskiest 22%, based on modeled expected annual loss, social vulnerability, and community resilience.

Riskiest 22%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
42
FEMA declarations vs 21 national county avg
96
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 Osage County compare?

Osage County vs. all counties in this dataset

FEMA disaster declarations, all-time

42 Top 3% higher than 97% 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

Osage County's FEMA Risk Index score

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

0/100100/100Oklahoma avg56/10078.1/100
FEMA National Risk Index composite score vs. the Oklahoma county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Osage County is led by Riverine Flooding (about $11.6M Expected Annual Loss, Historical Loss Ratio Relatively High), while Ice Storm carries the highest National Risk Index rating (Very 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 Osage County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 96 paid claims, totaling $1.2M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $12.2K 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. Osage County's 42 federal records stand 30% 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 78.1/100 (Relatively Low). Expected Annual Loss is rated Relatively Low (roughly $27.6M in annualized losses). Social vulnerability reads Very High and community resilience Relatively Low, both critical modifiers of realized harm here. Of the 18 hazards FEMA models, Ice Storm stands out as the sharpest exposure here, rated Very High. FEMA's modeled frequency puts that hazard at roughly once every 1 years here, based on 59 historical events on record.

Declaration frequency

The FEMA register is busy by both local and national comparisons. It contains 42 entries for Osage County, including 30 Major Disaster records, 30% above the Oklahoma county mean. Across the 55-year span, that works out to 0.8 declarations a year. Severe Storm leads the file with 15 entries. Declaration type records the federal action taken, not every assistance program approved.

82 /100

Historical Activity Index

Very High historical activity

Osage 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
30/30

42 OpenFEMA declarations, full ingest window (2.0x national county average)

County Disaster Density High
16/25

42 declarations (1.3x state county average of 32)

Major Disaster Share High
18/25

30 of 42 declarations are major disasters (71%)

Hazard Diversity Very High
18/20

7 different disaster types declared in Osage County

Historical Declaration Activity

Activity Band

High

vs. Oklahoma Avg

+30%

State avg: 32.2

vs. National Avg

+103%

National avg: 20.7

Avg Per Year

0.8

Over 55 years

FEMA NRI 8-hazard radar - Osage County

Osage County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 48, Hurricane 8, Tornado 48, Wildfire 48, Drought 48, Heat Wave 48, Winter Storm 92. The simple mean of these eight displayed scores is 44 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 44 8-hazard mean
Osage County NRI risk profile FIPS 40113 · displayed-hazard mean 44/100
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

42

Very high volume

Major Disaster share

71%

Major-heavy

NRI risk score

78

Relatively Low

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

How often does each hazard strike Osage 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 Very High roughly once every 1 years
Wildfire Relatively Moderate roughly once every 88 years
Heat Wave Relatively Moderate 24 modeled event-days per year
Drought Relatively Moderate 56 modeled event-days per year
Tornado Relatively Moderate an average of 2.3 times per year
Landslide Relatively Moderate roughly once every 1 years
Cold Wave Relatively Moderate an average of 2.1 times per year
Riverine Flooding Relatively Moderate an average of 2.1 times per year
Winter Weather Relatively Moderate an average of 9.5 times per year
Strong Wind Relatively Moderate an average of 7 times per year
Lightning Relatively Low an average of 53 times per year
Earthquake Very Low roughly once every 889 years
Hail Very Low an average of 9.3 times per year
Hurricane Very Low roughly once every 111 years

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

Disaster Types

Severe Storm 15
Severe Ice Storm 8
Flood 7
Fire 5
Tornado 4
Biological 2
Hurricane 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Osage County's record, 36% 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 - 30 71.4%

of all 42 declarations

Emergency - 8 19.0%

of all 42 declarations

Fire Management - 4 9.5%

of all 42 declarations

FEMA Declarations Timeline

Year Declarations
2026 1
2025 1
2024 1
2021 2
2020 2
2019 3
2016 1
2011 4
2010 3
2008 3
2007 3
2006 2
2005 1
2003 2
2002 1
Show 10 earlier declaration years
2001 1
1995 1
1993 1
1991 1
1987 1
1984 2
1975 1
1974 2
1973 1
1971 1

Disaster Declarations

How the 42 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 42 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
5621 RATTLESNAKE FIRE FM Fire 2026-02-19
5544 NORTH ROAD FIRE FM Fire 2024-10-30
4776 SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING DR Tornado 2024-04-30
4587 SEVERE WINTER STORMS DR Severe Ice Storm 2021-02-24
3555 SEVERE WINTER STORM EM Severe Ice Storm 2021-02-17
4530 COVID-19 PANDEMIC DR Biological 2020-04-05
3462 COVID-19 EM Biological 2020-03-13
4453 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2019-07-12
4438 SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING DR Severe Storm 2019-06-01
3411 FLOODING EM Flood 2019-05-25
4256 SEVERE WINTER STORMS AND FLOODING DR Severe Storm 2016-02-10
1989 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2011-06-06
1985 SEVERE WINTER STORM AND SNOWSTORM DR Severe Storm 2011-05-13
2874 OSAGE COUNTY FIRE COMPLEX FM Fire 2011-03-24
3316 SEVERE WINTER STORM EM Severe Storm 2011-02-02
1917 SEVERE STORMS, TORNADOES, AND STRAIGHT-LINE WINDS DR Severe Storm 2010-05-24
1876 SEVERE WINTER STORM DR Severe Storm 2010-02-25
3308 SEVERE WINTER STORM EM Severe Storm 2010-01-30
1775 SEVERE STORMS AND FLOODING DR Severe Storm 2008-07-09
1735 SEVERE WINTER STORMS DR Severe Ice Storm 2007-12-18
Show 22 earlier declaration records
DR# Title Type Incident Date
3280 SEVERE WINTER STORMS EM Severe Ice Storm 2007-12-10
1712 SEVERE STORMS, FLOODING, AND TORNADOES DR Severe Storm 2007-07-07
1678 SEVERE WINTER STORMS DR Severe Storm 2007-02-01
3272 SEVERE WINTER STORMS AND FLOODING EM Severe Ice Storm 2007-01-14
2628 SPERRY FIRE FM Fire 2006-01-19
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
1452 SEVERE ICE STORM DR Severe Ice Storm 2003-02-04
1401 SEVERE WINTER ICE STORM DR Severe Ice Storm 2002-02-01
1355 SEVERE WINTER ICE STORM DR Severe Ice Storm 2001-01-05
1058 TORNADOES, SEVERE STORMS AND FLOODING DR Tornado 1995-06-26
991 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1993-05-12
905 SEVERE STORMS & TORNADOES DR Tornado 1991-05-08
778 SEVERE STORMS & FLOODING DR Flood 1986-10-14
709 SEVERE STORMS & FLOODING DR Flood 1984-05-31
704 SEVERE STORMS & TORNADOES DR Tornado 1984-05-03
453 SEVERE STORMS & FLOODING DR Flood 1974-11-26
441 SEVERE STORMS & FLOODING DR Flood 1974-06-10
419 HEAVY RAINS & FLOODING DR Flood 1974-03-22
392 SEVERE STORMS, FLOODING, & TORNADOES DR Severe Storm 1973-06-13
314 HEAVY RAINS & FLOODS DR Flood 1971-09-28

Storm Events in Oklahoma

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

96

Total Paid

$1.2M

Avg Per Claim

$12.2K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 78.1/100

Expected Annual Loss

Relatively Low

$27.6M/year

Social Vulnerability

Very High

Community Resilience

Relatively Low

Hazard Risk Breakdown

Ice Storm Very High
Wildfire Relatively Moderate
Heat Wave Relatively Moderate
Drought Relatively Moderate
Tornado Relatively Moderate
Landslide Relatively Moderate
Cold Wave Relatively Moderate
Riverine Flooding Relatively Moderate
Winter Weather Relatively Moderate
Strong Wind Relatively Moderate
Lightning Relatively Low
Earthquake Very Low
Hail Very Low
Hurricane Very 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 Osage County: the model and the federal record do NOT point at the same hazard. Ice Storm carries the highest modeled rating (Very 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

Osage County's closest FEMA peer: Harris County, TX

Comparisons use published FEMA declaration fields plus the National Risk Index composite for Osage 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 Osage County - capture-dated entries only.

Further reading for this county

Understanding disaster data

Osage County's NFIP claims file (96 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 Osage County?
The most common disaster type in Osage County is Severe Storm, with 15 declarations. Other disaster types include Severe Ice Storm (8), Flood (7), Fire (5).
How does Osage County's FEMA declaration record compare with the Oklahoma average?
FEMA lists 42 declaration records for Osage County. That is 30% above the Oklahoma county mean of 32.2. Its count is also 103% 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 Osage County received?
Osage County has received 30 major disaster declarations, representing 71% of all 42 disaster declarations.
How many flood insurance claims has Osage County filed?
Osage County has 96 National Flood Insurance Program (NFIP) claims totaling $1.2M in payments, with an average of $12.2K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Osage County?
No. In Osage County, Ice Storm has the highest National Risk Index rating (Very High), while Riverine Flooding leads Expected Annual Loss at about $11.6M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Osage County?
The most active year for disaster declarations in Osage County was 2011, with 4 declarations. The county has FEMA disaster data spanning 1971 to 2026.
What is the FEMA National Risk Index score for Osage County?
According to the FEMA National Risk Index, Osage County, Oklahoma has an overall risk score of 78.1 out of 100 (Relatively Low). The county's social vulnerability rating is Very High and community resilience is Relatively Low. The Expected Annual Loss (EAL) score is Relatively Low, representing $27.6M in annualized losses.
Which natural hazard poses the greatest risk to Osage County?
FEMA's NRI data points to Osage County as of the latest release is Ice Storm (risk rating: Very High). Other significant hazards include Wildfire (Relatively Moderate) and Heat Wave (Relatively Moderate). FEMA's modeled event frequency puts ice storm here at roughly once every 1 years, drawn from 59 historical events on record. The underlying methodology weighs historical event frequency against 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 Osage County

Osage County, OK has 42 federal declaration records, 30% 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 30 of 42 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 97% 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.