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Mississippi · FEMA + NOAA + National Risk Index

Clarke County, MS

25 FEMA disaster declarations (1973-2026), with a FEMA National Risk Index rating of Very Low. Most common hazard: Hurricane.

25
FEMA declarations
18
Major disasters
36
NRI risk · Very Low
Hurricane
Top hazard

The verdict

Clarke County has a nationally busy FEMA history: 25 declarations, more than 71% of counties in this registry. But the state comparison tempers that reading: the total is 3% below the Mississippi county mean. FEMA's separate National Risk Index places the county safer than 36%; that score models loss and vulnerability rather than counting declarations.

Safer than 36%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
25
FEMA declarations vs 21 national county avg
80
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 Clarke County compare?

Clarke County vs. all counties in this dataset

FEMA disaster declarations, all-time

25 Top 29% higher than 71% 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

Clarke County's FEMA Risk Index score

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

0/100100/100Mississippi avg51/10036/100
FEMA National Risk Index composite score vs. the Mississippi county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Clarke County is led by Riverine Flooding (about $3.4M Expected Annual Loss, Historical Loss Ratio Relatively Low), while Lightning 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 Clarke County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 80 paid claims, totaling $1.3M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $16.3K average describes payments on recorded claims only, leaving uninsured damage and properties without a claim outside the measure.

Start with the state benchmark: a Mississippi county averages 25.9 federal declaration records, while Clarke County has 25. The gap is 3% 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.

FEMA National Risk Index

FEMA's data shows an elevated National Risk Index composite of 36.0/100 for this county (Very Low rating). Expected Annual Loss comes in at Very Low (roughly $9.0M in annualized losses). Social vulnerability (Relatively High) and community resilience (Relatively Low) both factor into how that raw exposure plays out on the ground. Among the 18 modeled hazards, Lightning carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at an average of 73 times per year here, based on 93,651 historical events on record.

Declaration frequency

Nationally, Clarke County's 25 FEMA records form a high-volume history; within Mississippi, however, the count is 3% below the county mean. 18 entries carry the Major Disaster classification. The largest incident group is Hurricane, appearing 10 times. The full 53-year record averages 0.5 declarations annually. A DR label alone does not say whether Individual Assistance, Public Assistance, or both followed.

63 /100

Historical Activity Index

High historical activity

Clarke County, MS · 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) High
18/30

25 OpenFEMA declarations, full ingest window (1.2x national county average)

County Disaster Density Moderate
12/25

25 declarations (1.0x state county average of 26)

Major Disaster Share High
18/25

18 of 25 declarations are major disasters (72%)

Hazard Diversity Very High
15/20

6 different disaster types declared in Clarke County

Historical Declaration Activity

Activity Band

High

vs. Mississippi Avg

-3%

State avg: 25.9

vs. National Avg

+21%

National avg: 20.7

Avg Per Year

0.5

Over 53 years

FEMA NRI 8-hazard radar - Clarke County

Clarke County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 25, Hurricane 25, Tornado 48, Wildfire 8, Drought 25, Heat Wave 25, Winter Storm 25. The simple mean of these eight displayed scores is 24 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 24 8-hazard mean
Clarke County NRI risk profile FIPS 28023 · displayed-hazard mean 24/100
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

25

High volume

Major Disaster share

72%

Major-heavy

NRI risk score

36

Very Low

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

How often does each hazard strike Clarke 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
Lightning Relatively Moderate an average of 73 times per year
Hurricane Relatively Low roughly once every 7 years
Tornado Relatively Moderate roughly once every 1 years
Cold Wave Relatively Low roughly once every 1 years
Drought Relatively Low 11 modeled event-days per year
Landslide Very Low roughly once every 2 years
Heat Wave Relatively Low 10 modeled event-days per year
Earthquake Very Low roughly once every 569 years
Hail Relatively Low an average of 3.4 times per year
Strong Wind Relatively Low an average of 2.8 times per year
Riverine Flooding Relatively Low an average of 1.3 times per year
Ice Storm Relatively Low roughly once every 1 years
Wildfire Very Low roughly once every 1,648 years
Winter Weather Relatively Low an average of 2.3 times per year

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

Disaster Types

Hurricane 10
Severe Storm 8
Winter Storm 2
Biological 2
Flood 2
Snowstorm 1

What Hurricane declarations mean here

Hurricane is the most frequent declaration type on Clarke County's federal record, 40% of its declarations. Atlantic tropical systems run on a defined season, 1 June to 30 November, with most activity concentrated between August and October; Pacific and territorial basins run on their own calendars. A single named storm routinely produces one declaration number covering a long corridor of counties at once, well inland as well as on the coast, which is why an affected county's count can jump by several in one year without several separate events having occurred.

One practical distinction matters when reading these records: a tropical declaration usually bundles wind, storm surge and inland rainfall flooding under a single incident, but the insurance behind them is split. Wind damage falls to property insurers, while flood and surge damage is covered only under a separate National Flood Insurance Program policy. That is why a county can show heavy declaration activity and a comparatively small NFIP claims record, or the reverse.

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 - 18 72.0%

of all 25 declarations

Emergency - 7 28.0%

of all 25 declarations

FEMA Declarations Timeline

Year Declarations
2026 2
2022 1
2021 2
2020 3
2019 2
2016 1
2012 2
2011 1
2008 1
2005 2
2004 1
2003 1
1990 1
1979 2
1977 1
Show 2 earlier declaration years
1974 1
1973 1

Disaster Declarations

How the 25 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 25 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4899 SEVERE WINTER STORM DR Winter Storm 2026-02-06
3640 SEVERE WINTER STORM EM Winter Storm 2026-01-24
4626 HURRICANE IDA DR Hurricane 2021-10-22
3569 HURRICANE IDA EM Hurricane 2021-08-28
3550 HURRICANE ZETA EM Hurricane 2020-10-28
4536 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2020-04-16
4528 COVID-19 PANDEMIC DR Biological 2020-04-05
3474 COVID-19 EM Biological 2020-03-13
4450 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2019-06-20
4415 SEVERE STORMS, FLOODING, AND TORNADO DR Severe Storm 2019-02-14
4268 SEVERE STORMS AND FLOODING DR Flood 2016-03-25
4081 HURRICANE ISAAC DR Hurricane 2012-08-29
3348 TROPICAL STORM ISAAC EM Hurricane 2012-08-28
1972 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND ASSOCIATED FLOODING DR Severe Storm 2011-04-29
3291 HURRICANE GUSTAV EM Hurricane 2008-08-30
1604 HURRICANE KATRINA DR Hurricane 2005-08-29
1594 HURRICANE DENNIS DR Hurricane 2005-07-10
1550 HURRICANE IVAN DR Hurricane 2004-09-15
1459 SEVERE STORMS, TORNADOES, FLOODS DR Severe Storm 2003-04-24
859 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1990-02-28
Show 5 earlier declaration records
DR# Title Type Incident Date
599 HURRICANE FREDERIC DR Hurricane 1979-09-13
577 STORMS, TORNADOES, FLOODS DR Severe Storm 1979-04-16
3032 DROUGHT & FREEZING EM Snowstorm 1977-02-22
430 HEAVY RAINS & FLOODING DR Flood 1974-04-18
368 HEAVY RAINS, TORNADOES & FLOODING DR Severe Storm 1973-03-27

Storm Events in Mississippi

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 5,557 17 60 $93.9M
Flash Flood 1,551 6 9 $83.6M
Hail 1,411 0 0 $90.1M
Heat 1,340 3 0 $0
Tornado 1,097 68 610 $562.0M

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

NFIP Flood Insurance Claims

Total Claims

80

Total Paid

$1.3M

Avg Per Claim

$16.3K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 36.0/100

Expected Annual Loss

Very Low

$9.0M/year

Social Vulnerability

Relatively High

Community Resilience

Relatively Low

Hazard Risk Breakdown

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

Lightning is modeled as a high-frequency, low-per-event hazard: strike counts are large, but each strike affects a very small area. Its aggregate cost accumulates through structure fires, electrical and electronic damage, and it is one of the few hazards whose risk is essentially continuous through the season rather than episodic.

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

Clarke County's closest FEMA peer: Garfield County, OK

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

Further reading for this county

Understanding disaster data

Clarke County's NFIP claims file (80 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 Clarke County?
The most common disaster type in Clarke County is Hurricane, with 10 declarations. Other disaster types include Severe Storm (8), Winter Storm (2), Biological (2).
How does Clarke County's FEMA declaration record compare with the Mississippi average?
The typical Mississippi county has 25.9 FEMA declaration records; Clarke County has 25, or 3% fewer. Against the national county mean of 20.7, this county's total is 21% higher. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Clarke County received?
Clarke County has received 18 major disaster declarations, representing 72% of all 25 disaster declarations.
How many flood insurance claims has Clarke County filed?
Clarke County has 80 National Flood Insurance Program (NFIP) claims totaling $1.3M in payments, with an average of $16.3K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Clarke County?
No. In Clarke County, Lightning has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $3.4M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Clarke County?
The most active year for disaster declarations in Clarke County was 2020, with 3 declarations. The county has FEMA disaster data spanning 1973 to 2026.
What is the FEMA National Risk Index score for Clarke County?
According to the FEMA National Risk Index, Clarke County, Mississippi has an overall risk score of 36.0 out of 100 (Very Low). On social vulnerability the county rates Relatively High; on community resilience, Relatively Low. The Expected Annual Loss (EAL) score is Very Low, representing $9.0M in annualized losses.
Which natural hazard poses the greatest risk to Clarke County?
The top hazard flagged by FEMA's NRI for Clarke County as of the latest release is Lightning (risk rating: Relatively Moderate). Other significant hazards include Hurricane (Relatively Low) and Tornado (Relatively Moderate). FEMA's modeled event frequency puts lightning here at an average of 73 times per year, drawn from 93,651 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 Clarke County

Against a Mississippi county mean of 26 declarations, Clarke County, MS records 25, or 3% fewer. PlainHazard classifies that historical total as high activity.

  • Major Disaster is the largest group (18 of 25) in a declaration history that remains below its state benchmark; frequency here is not a forecast. Mississippi overview
  • Nationally the county exceeds 71% of recorded county totals, but its own Mississippi benchmark is higher. The ranking keeps those two contexts separate. 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

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.