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Mississippi · FEMA + NOAA + National Risk Index

Walthall County, MS

29 FEMA disaster declarations (1969-2026), with a FEMA National Risk Index rating of Very Low. Most common hazard: Hurricane.

29
FEMA declarations
19
Major disasters
26
NRI risk · Very Low
Hurricane
Top hazard

The verdict

Two federal records point in the busier direction for Walthall County. Its 29 FEMA declarations are 12% above the Mississippi county mean and exceed the count for 85% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it safer than 26%, based on modeled expected annual loss, social vulnerability, and community resilience.

Safer than 26%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
29
FEMA declarations vs 21 national county avg
233
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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FEMA OpenFEMA declaration desk

County FIPS 28147 · Walthall County 29 declarations · rank 448/3,266

DECL-HEAVY · MAJOR-MID · RANK-MID · PHOTO-FINISH · NRI-LOW · ACT-HIGH · TYPE-LEAD · VS-ST-ABOVE

  • DECL-HEAVY 29
  • MAJOR-MID 66%
  • RANK-MID #448
  • PHOTO-FINISH Bath
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Hurricane
  • VS-ST-ABOVE +12%

Nearest declaration peer: Bath, KY (0 declaration gap)

FEMA Disaster Declarations Summaries v2 filing stamps for this county register. Read with this county → · Mississippi state profile

Walthall County among high-volume declaration counties

FEMA declaration records among Walthall County and nearest peers by total count

declarations

What this shows Walthall County carries 29 FEMA declaration records, ranked 448 of 3,266 counties in this registry.

Source FEMA OpenFEMA Disaster Declarations Summaries v2 As of 2026-08-25

Where Walthall County ranks in the national declaration registry

Walthall County vs. high-volume counties in this registry

FEMA disaster declarations, all-time · Walthall County

29 Top 15% higher than 85% 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 · 2026-08-25

Walthall County's FEMA Risk Index score

0/100100/100Mississippi avg51/10025.5/100
FEMA National Risk Index composite score vs. the Mississippi county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Walthall County is led by Riverine Flooding (about $2.5M Expected Annual Loss, Historical Loss Ratio Relatively Low), while Strong Wind 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 Walthall County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 233 paid claims, totaling $2.9M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $12.4K 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. Walthall County's 29 federal records stand 12% above the Mississippi county mean of 25.9. 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's FEMA National Risk Index composite lands at 25.5/100 (Very Low), a modest reading against the rest of the country. Expected Annual Loss is rated Very Low (roughly $7.0M in annualized losses), tempered or compounded by a Relatively High social-vulnerability score and Very Low community-resilience score. Among the 18 modeled hazards, Strong Wind carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at an average of 2.5 times per year here, based on 95 historical events on record.

69 /100

Historical Activity Index

High historical activity

Walthall 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
21/30

29 OpenFEMA declarations, full ingest window (1.4x national county average)

County Disaster Density High
14/25

29 declarations (1.1x state county average of 26)

Major Disaster Share High
16/25

19 of 29 declarations are major disasters (66%)

Hazard Diversity Very High
18/20

7 different disaster types declared in Walthall County

FEMA NRI 8-hazard radar - Walthall County

Walthall County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 8, Hurricane 25, Tornado 25, Wildfire 25, Drought 25, Heat Wave 25, Winter Storm 25. The simple mean of these eight displayed scores is 21 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 21 8-hazard mean
Walthall County NRI risk profile FIPS 28147 · displayed-hazard mean 21/100
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

29

High volume

Major Disaster share

66%

Major-heavy

NRI risk score

26

Very Low

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

How often does each hazard strike Walthall 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
Strong Wind Relatively Moderate an average of 2.5 times per year
Hurricane Relatively Low roughly once every 7 years
Wildfire Relatively Low roughly once every 324 years
Heat Wave Relatively Low 12 modeled event-days per year
Drought Relatively Low 14 modeled event-days per year
Hail Relatively Low an average of 3.2 times per year
Ice Storm Relatively Low roughly once every 1 years
Tornado Relatively Low roughly once every 2 years
Lightning Relatively Low an average of 80 times per year
Earthquake Very Low roughly once every 915 years
Landslide Very Low roughly once every 6 years
Cold Wave Relatively Low an average of 1 time per year
Riverine Flooding Very Low roughly once every 4 years
Winter Weather Very Low an average of 1.5 times per year

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

Disaster Types

Hurricane 13
Severe Storm 8
Winter Storm 2
Biological 2
Flood 2
Severe Ice Storm 1
Snowstorm 1

What Hurricane declarations mean here

Hurricane is the most frequent declaration type on Walthall County's federal record, 45% 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 - 19 65.5%

of all 29 declarations

Emergency - 10 34.5%

of all 29 declarations

FEMA Declarations Timeline

Year Declarations
2026 2
2025 1
2022 1
2021 3
2020 5
2016 1
2012 2
2009 1
2008 2
2005 1
2004 1
2003 1
2001 1
1998 1
1990 1
Show 5 earlier declaration years
1983 1
1980 1
1977 1
1972 1
1969 1

Disaster Declarations

How the 29 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 29 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
4874 SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING DR Severe Storm 2025-05-21
4626 HURRICANE IDA DR Hurricane 2021-10-22
3569 HURRICANE IDA EM Hurricane 2021-08-28
4598 SEVERE WINTER STORMS DR Severe Ice Storm 2021-05-04
3548 HURRICANE DELTA EM Hurricane 2020-10-08
3544 HURRICANE SALLY EM Hurricane 2020-09-14
3539 HURRICANE MARCO AND TROPICAL STORM LAURA EM Hurricane 2020-08-23
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
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
1837 SEVERE STORMS, FLOODING, AND TORNADOES DR Severe Storm 2009-05-12
1794 HURRICANE GUSTAV DR Hurricane 2008-09-22
3291 HURRICANE GUSTAV EM Hurricane 2008-08-30
1604 HURRICANE KATRINA DR Hurricane 2005-08-29
1550 HURRICANE IVAN DR Hurricane 2004-09-15
Show 9 earlier declaration records
DR# Title Type Incident Date
1459 SEVERE STORMS, TORNADOES, FLOODS DR Severe Storm 2003-04-24
1360 SEVERE STORMS AND TORNADOES DR Severe Storm 2001-02-23
3132 HURRICANE GEORGES EM Hurricane 1998-09-28
859 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1990-02-28
678 SEVERE STORMS, FLOODING & TORNADOES DR Severe Storm 1983-04-16
618 STORMS, FLOOD, MUDSLIDES & TORNADOES DR Severe Storm 1980-04-19
3032 DROUGHT & FREEZING EM Snowstorm 1977-02-22
318 HEAVY RAINS & FLOODING DR Flood 1972-01-19
271 HURRICANE CAMILLE DR Hurricane 1969-08-18

Storm Events in Mississippi

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

233

Total Paid

$2.9M

Avg Per Claim

$12.4K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 25.5/100

Expected Annual Loss

Very Low

$7.0M/year

Social Vulnerability

Relatively High

Community Resilience

Very Low

Hazard Risk Breakdown

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

Strong Wind covers damaging non-thunderstorm, non-tornadic wind, the kind produced by steep pressure gradients and downslope events. It is a broad, frequent, low-drama hazard: roofs, signage, power lines and high-profile vehicles, spread across a wide area rather than concentrated on a path.

Worth noting for Walthall County: the model and the federal record do NOT point at the same hazard. Strong Wind 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

Walthall County's closest FEMA peer: Etowah County, AL

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Walthall County: nearest out-of-state National Risk Index composite and nearest FEMA declaration count (floor ≥5 records). Record similarity only, not a forecast of the next hazard.

Further reading for this county

Understanding disaster data

Walthall County's NFIP claims file (233 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 Walthall County?
The most common disaster type in Walthall County is Hurricane, with 13 declarations. Other disaster types include Severe Storm (8), Winter Storm (2), Biological (2).
How does Walthall County's FEMA declaration record compare with the Mississippi average?
FEMA lists 29 declaration records for Walthall County. That is 12% above the Mississippi county mean of 25.9. Its count is also 40% 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 Walthall County received?
Walthall County has received 19 major disaster declarations, representing 66% of all 29 disaster declarations.
How many flood insurance claims has Walthall County filed?
Walthall County has 233 National Flood Insurance Program (NFIP) claims totaling $2.9M in payments, with an average of $12.4K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Walthall County?
No. In Walthall County, Strong Wind has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $2.5M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Walthall County?
The most active year for disaster declarations in Walthall County was 2020, with 5 declarations. The county has FEMA disaster data spanning 1969 to 2026.
What is the FEMA National Risk Index score for Walthall County?
According to the FEMA National Risk Index, Walthall County, Mississippi has an overall risk score of 25.5 out of 100 (Very Low). The county's social vulnerability rating is Relatively High and community resilience is Very Low. The Expected Annual Loss (EAL) score is Very Low, representing $7.0M in annualized losses.
Which natural hazard poses the greatest risk to Walthall County?
The top hazard flagged by FEMA's NRI for Walthall County as of the latest release is Strong Wind (risk rating: Relatively Moderate). Other significant hazards include Hurricane (Relatively Low) and Wildfire (Relatively Low). FEMA's modeled event frequency puts strong wind here at an average of 2.5 times per year, drawn from 95 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.

FEMA OpenFEMA declarations + NRI for Walthall County · vintage 2026-08-25 · Methodology · Mississippi profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events