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Arizona · FEMA + NOAA + National Risk Index

Graham County, AZ

13 FEMA disaster declarations (1966-2020), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Flood.

13
FEMA declarations
10
Major disasters
65
NRI risk · Relatively Low
Flood
Top hazard

The verdict

Graham County has a nationally busy FEMA history: 13 declarations, more than 17% of counties in this registry. But the state comparison tempers that reading: the total is 22% below the Arizona county mean. FEMA's separate National Risk Index places the county in the riskiest 35%; that score models loss and vulnerability rather than counting declarations.

Riskiest 35%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
13
FEMA declarations vs 21 national county avg
42
NFIP flood insurance claims filed

FEMA's National Risk Index and its declaration registry are separate measures. This county's registry includes Major Disaster (DR) and Emergency (EM) records; an EM authorizes a narrower set of federal assistance than a DR.

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How does Graham County compare?

Graham County vs. all counties in this dataset

FEMA disaster declarations, all-time

13 17th percentile higher than 17% 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

Graham County's FEMA Risk Index score

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

0/100100/100Arizona avg85/10064.6/100
FEMA National Risk Index composite score vs. the Arizona county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Graham County is led by Riverine Flooding (about $9.0M Expected Annual Loss, Historical Loss Ratio Relatively Low), while Heat Wave carries the highest National Risk Index rating (Relatively Moderate). 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 Graham County's hazard record show?

FEMA National Risk Index

This county carries a high composite score on FEMA's National Risk Index, 64.6/100, rated Relatively Low. Its Expected Annual Loss rating is Relatively Low (roughly $18.2M in annualized losses), and a Relatively High social-vulnerability profile combined with Very Low community resilience shapes how much of that raw exposure becomes realized harm. Among the 18 modeled hazards, Heat Wave carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at 4.9 modeled event-days per year here, based on 53 historical events on record.

Declaration frequency

Nationally, Graham County's 13 FEMA records form a high-volume history; within Arizona, however, the count is 22% below the county mean. 10 entries carry the Major Disaster classification. The largest incident group is Flood, appearing 7 times. The full 54-year record averages 0.2 declarations annually. A DR label alone does not say whether Individual Assistance, Public Assistance, or both followed.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 42 claims and $351.3K paid in total. PlainHazard calls 1-49 claims a light registry record, a label for this dataset rather than a finding that flood exposure is low. A short claims history can also reflect insurance take-up, the period covered, or losses that were never insured.

Start with the state benchmark: a Arizona county averages 16.7 federal declaration records, while Graham County has 13. The gap is 22% below that mean. Fewer entries indicate a quieter history of recorded federal actions, not immunity from a hazard and not a prediction about what happens next.

51 /100

Historical Activity Index

High historical activity

Graham County, AZ · 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) Moderate
9/30

13 OpenFEMA declarations, full ingest window (0.6x national county average)

County Disaster Density Moderate
10/25

13 declarations (0.8x state county average of 17)

Major Disaster Share Very High
19/25

10 of 13 declarations are major disasters (77%)

Hazard Diversity High
13/20

5 different disaster types declared in Graham County

Historical Declaration Activity

Activity Band

High

vs. Arizona Avg

-22%

State avg: 16.7

vs. National Avg

-37%

National avg: 20.7

Avg Per Year

0.2

Over 54 years

FEMA NRI 8-hazard radar - Graham County

Graham County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 25, Hurricane 8, Tornado 8, Wildfire 48, Drought 48, Heat Wave 48, Winter Storm 48. The simple mean of these eight displayed scores is 30 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 30 8-hazard mean
Graham County NRI risk profile FIPS 04009 · displayed-hazard mean 30/100
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

13

Low volume

Major Disaster share

77%

Mostly major

NRI risk score

65

Relatively Low

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

How often does each hazard strike Graham 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
Heat Wave Relatively Moderate 4.9 modeled event-days per year
Wildfire Relatively Moderate roughly once every 180 years
Lightning Relatively High an average of 58 times per year
Drought Relatively Moderate 85 modeled event-days per year
Winter Weather Relatively Moderate an average of 7.1 times per year
Riverine Flooding Relatively Low an average of 1.7 times per year
Avalanche Very Low roughly once every 100 years
Earthquake Very Low roughly once every 850 years
Landslide Very Low an average of 2 times per year
Hail Very Low roughly once every 5 years
Strong Wind Very Low roughly once every 2 years
Hurricane Very Low roughly once every 44 years
Cold Wave Very Low roughly once every 59 years
Tornado Very Low roughly once every 11 years

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

Disaster Types

Flood 7
Biological 2
Severe Storm 2
Hurricane 1
Drought 1

What Flood declarations mean here

Flood is the most frequent declaration type on Graham County's record, 54% of its declarations. Federal flood declarations cover two mechanisms that behave very differently: riverine flooding, which builds over days as a watershed drains and is usually forecast well in advance, and flash flooding, which can arrive in under an hour from rainfall that fell somewhere upstream.

Flood is also the one hazard class where a second federal dataset exists for the same events. The National Flood Insurance Program records what was actually paid on insured losses, so it measures a narrower thing than the declaration count: uninsured damage, and flooding outside mapped special flood hazard areas, never enters it. Reading the two together is more informative than either alone.

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 - 10 76.9%

of all 13 declarations

Emergency - 3 23.1%

of all 13 declarations

FEMA Declarations Timeline

Year Declarations
2020 2
2006 1
2005 2
1993 1
1991 1
1984 1
1979 1
1978 1
1977 1
1973 1
1966 1

Disaster Declarations

How the 13 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 13 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4524 COVID-19 PANDEMIC DR Biological 2020-04-04
3442 COVID-19 EM Biological 2020-03-13
1660 SEVERE STORMS AND FLOODING DR Severe Storm 2006-09-07
3241 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-12
1586 SEVERE STORMS AND FLOODING DR Severe Storm 2005-04-14
977 SEVERE STORMS, TORNADOES & FLOODING DR Flood 1993-01-19
884 SEVERE STORMS & FLOODING DR Flood 1990-12-06
691 SEVERE STORMS & FLOODING DR Flood 1983-10-05
570 SEVERE STORMS & FLOODING DR Flood 1978-12-21
551 SEVERE STORMS & FLOODING DR Flood 1978-03-04
3038 DROUGHT EM Drought 1977-04-15
360 HEAVY RAINS & FLOODING DR Flood 1972-10-25
217 FLOODING DR Flood 1966-04-30

Storm Events in Arizona

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

Storm Type Events Fatalities Injuries Property Damage
Flash Flood 2,094 45 18 $149.9M
Excessive Heat 1,812 1,497 120 $0
Thunderstorm Wind 1,680 3 19 $75.9M
Heat 727 1,206 39 $0
High Wind 446 0 0 $734.0K

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

NFIP Flood Insurance Claims

Total Claims

42

Total Paid

$351.3K

Avg Per Claim

$8.4K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 64.6/100

Expected Annual Loss

Relatively Low

$18.2M/year

Social Vulnerability

Relatively High

Community Resilience

Very Low

Hazard Risk Breakdown

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

Heat Wave is measured in event-days per year rather than discrete events, and it is the hazard whose harm is most consistently undercounted: its toll is health and mortality, concentrated among people without cooling, rather than visible damage to property.

Worth noting for Graham County: the model and the federal record do NOT point at the same hazard. Heat Wave carries the highest modeled rating (Relatively Moderate), while the county's declaration history is led by Flood. 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

Graham County's closest FEMA peer: Carroll County, AR

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

Further reading for this county

Most disaster-prone counties

With 13 FEMA declarations, Graham County sits in the high-volume declaration band - see how that count ranks against other U.S. counties.

More PlainHazard guides

Frequently Asked Questions

What is the most common disaster type in Graham County?
The most common disaster type in Graham County is Flood, with 7 declarations. Other disaster types include Biological (2), Severe Storm (2), Hurricane (1).
How does Graham County's FEMA declaration record compare with the Arizona average?
The typical Arizona county has 16.7 FEMA declaration records; Graham County has 13, or 22% fewer. Against the national county mean of 20.7, this county's total is 37% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Graham County received?
Graham County has received 10 major disaster declarations, representing 77% of all 13 disaster declarations.
How many flood insurance claims has Graham County filed?
Graham County has 42 National Flood Insurance Program (NFIP) claims totaling $351.3K in payments, with an average of $8.4K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Graham County?
No. In Graham County, Heat Wave has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $9.0M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Graham County?
The most active year for disaster declarations in Graham County was 2005, with 2 declarations. The county has FEMA disaster data spanning 1966 to 2020.
What is the FEMA National Risk Index score for Graham County?
According to the FEMA National Risk Index, Graham County, Arizona has an overall risk score of 64.6 out of 100 (Relatively Low). The county's social vulnerability rating is Relatively High and community resilience is Very Low. The Expected Annual Loss (EAL) score is Relatively Low, representing $18.2M in annualized losses.
Which natural hazard poses the greatest risk to Graham County?
The top hazard flagged by FEMA's NRI for Graham County is Heat Wave (risk rating: Relatively Moderate). Other significant hazards include Wildfire (Relatively Moderate) and Lightning (Relatively High). FEMA's modeled event frequency puts heat wave here at 4.9 modeled event-days per year, drawn from 53 historical events on record. FEMA derives these ratings from historical event frequency, the assets exposed, and the community's vulnerability profile.
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 Graham County

Against a Arizona county mean of 17 declarations, Graham County, AZ records 13, or 22% fewer. PlainHazard classifies that historical total as high activity.

  • Major Disaster is the largest group (10 of 13) in a declaration history that remains below its state benchmark; frequency here is not a forecast. Arizona overview
  • Nationally the county exceeds 17% of recorded county totals, but its own Arizona benchmark is higher. The ranking keeps those two contexts separate. Most-disaster rankings
  • A short NFIP claims file cannot establish low flood exposure; the data guide explains the limits of each federal measure. Disaster-data guide

A below-average federal record is not a safety guarantee. Use National Weather Service alerts and local emergency-management notices for present conditions, not this historical comparison.

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.