FEMA Records
18
Below median
Mississippi · FEMA + NOAA + National Risk Index
Alcorn County, MS
18 FEMA disaster declarations (1973-2026), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Severe Storm.
- 18
- FEMA declarations
- 13
- Major disasters
- 65
- NRI risk · Relatively Low
- Severe Storm
- Top hazard
The verdict
Alcorn County has a nationally busy FEMA history: 18 declarations, more than 37% of counties in this registry. But the state comparison tempers that reading: the total is 30% below the Mississippi 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
- 18
- FEMA declarations vs 21 national county avg
- 67
- 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.
FEMA OpenFEMA declaration desk
County FIPS 28003 · Alcorn County 18 declarations · rank 1974/3,266
DECL-MID · MAJOR-MID · RANK-LOWER · PHOTO-FINISH · NRI-LOW · ACT-HIGH · TYPE-LEAD · VS-ST-BELOW
- DECL-MID 18
- MAJOR-MID 72%
- RANK-LOWER #1,974
- PHOTO-FINISH Monroe
- NRI-LOW 65
- ACT-HIGH High
- TYPE-LEAD Severe Storm
- VS-ST-BELOW -30%
Nearest declaration peer: Monroe, TN (0 declaration gap)
FEMA Disaster Declarations Summaries v2 filing stamps for this county register. Read with this county → · Mississippi state profile
Alcorn County in the declaration-count neighbourhood
FEMA declaration records among Alcorn County and nearest peers by total count
- Los Angeles · largest
Los Angeles · largest
88 declarations
- Alcorn · this county 18
Alcorn · this county
18 declarations
- Brooke · near 18
Brooke · near
18 declarations
- Mecklenburg · near 18
Mecklenburg · near
18 declarations
- Monroe · near 18
Monroe · near
18 declarations
- Ujelang · smallest 1
Ujelang · smallest
1 declarations
What this shows Alcorn County carries 18 FEMA declaration records, ranked 1974 of 3,266 counties in this registry.
How Alcorn County's FEMA declaration count compares nationally
Alcorn County vs. all counties in this dataset
FEMA disaster declarations, all-time · Alcorn County
18 37th percentile higher than 37% of 3,266 counties
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
Alcorn County's FEMA Risk Index score
Which hazard drives modeled loss here?
FEMA's modeled annual dollar loss for Alcorn County is led by Riverine Flooding (about $5.3M Expected Annual Loss, Historical Loss Ratio Relatively Moderate), while Earthquake carries the highest National Risk Index rating (Relatively Low). 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 Alcorn County's hazard record show?
Reading the federal records together
The NFIP claims register shows a middle-volume loss record here: 67 paid claims, totaling $4.3M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $64.9K 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 Alcorn County has 18. The gap is 30% 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
This county carries a high composite score on FEMA's National Risk Index, 65.0/100, rated Relatively Low. Its Expected Annual Loss rating is Relatively Low (roughly $18.7M in annualized losses), and a Relatively High social-vulnerability profile combined with Relatively Low community resilience shapes how much of that raw exposure becomes realized harm. Even the county's top-rated hazard, Earthquake, only reaches Relatively Low on FEMA's scale, none of the 18 modeled hazards stand out here. FEMA's modeled frequency puts that hazard at roughly once every 215 years here.
53 /100
Historical Activity Index
High historical activity
Alcorn 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) Moderate
13/30
18 OpenFEMA declarations, full ingest window (0.9x national county average)
County Disaster Density Moderate
9/25
18 declarations (0.7x state county average of 26)
Major Disaster Share High
18/25
13 of 18 declarations are major disasters (72%)
Hazard Diversity High
13/20
5 different disaster types declared in Alcorn County
FEMA NRI 8-hazard radar - Alcorn County
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.
Major Disaster share
72%
Major-heavy
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 Alcorn 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 |
|---|---|---|
| Earthquake | Relatively Low | roughly once every 215 years |
| Tornado | Relatively Moderate | roughly once every 3 years |
| Cold Wave | Relatively Moderate | an average of 1.3 times per year |
| Heat Wave | Relatively Low | 15 modeled event-days per year |
| Landslide | Relatively Low | roughly once every 2 years |
| Lightning | Relatively Moderate | an average of 61 times per year |
| Hurricane | Very Low | roughly once every 23 years |
| Riverine Flooding | Relatively Low | an average of 1.4 times per year |
| Drought | Relatively Low | 13 modeled event-days per year |
| Wildfire | Very Low | roughly once every 944 years |
| Strong Wind | Relatively Low | an average of 2.4 times per year |
| Ice Storm | Relatively Low | roughly once every 1 years |
| Hail | Very Low | an average of 3.5 times per year |
| Winter Weather | Very Low | an average of 4.7 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 9
Hurricane 4
Winter Storm 2
Biological 2
Snowstorm 1
What Severe Storm declarations mean here
Severe Storm is the most frequent declaration type on Alcorn County's record, 50% 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 - 13 72.2%
of all 18 declarations
Emergency - 5 27.8%
of all 18 declarations
FEMA Declarations Timeline
| Year | Declarations | |
|---|---|---|
| 2026 | 2 | |
| 2022 | 1 | |
| 2021 | 1 | |
| 2020 | 3 | |
| 2019 | 1 | |
| 2011 | 1 | |
| 2010 | 1 | |
| 2008 | 1 | |
| 2005 | 1 | |
| 2001 | 1 | |
| 1994 | 1 | |
| 1991 | 1 | |
| 1990 | 1 | |
| 1977 | 1 | |
| 1973 | 1 | |
Disaster Declarations
How the 18 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.
Download these 18 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 |
| 4528 | COVID-19 PANDEMIC | DR | Biological | 2020-04-05 |
| 3474 | COVID-19 | EM | Biological | 2020-03-13 |
| 4470 | SEVERE STORM, STRAIGHT-LINE WINDS, AND FLOODING | DR | Severe Storm | 2019-12-06 |
| 4429 | SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING | DR | Severe Storm | 2019-04-23 |
| 1972 | SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND ASSOCIATED FLOODING | DR | Severe Storm | 2011-04-29 |
| 1916 | SEVERE STORMS, TORNADOES, AND FLOODING | DR | Severe Storm | 2010-05-14 |
| 3291 | HURRICANE GUSTAV | EM | Hurricane | 2008-08-30 |
| 1604 | HURRICANE KATRINA | DR | Hurricane | 2005-08-29 |
| 1360 | SEVERE STORMS AND TORNADOES | DR | Severe Storm | 2001-02-23 |
| 1009 | SEVERE WINTER STORM, FREEEZING RAIN AND SLEET | DR | Severe Storm | 1994-02-18 |
| 906 | SEVERE STORMS, TORNADOES & FLOODING | DR | Severe Storm | 1991-05-17 |
| 859 | SEVERE STORMS, TORNADOES & FLOODING | DR | Severe Storm | 1990-02-28 |
| 3032 | DROUGHT & FREEZING | EM | Snowstorm | 1977-02-22 |
| 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 Alcorn 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
67
Total Paid
$4.3M
Avg Per Claim
$64.9K
Source: FEMA National Flood Insurance Program (NFIP) OpenFEMA Claims Data
FEMA National Risk Index
Overall Risk
Relatively Low
Score: 65.0/100
Expected Annual Loss
Relatively Low
$18.7M/year
Social Vulnerability
Relatively High
Community Resilience
Relatively Low
Hazard Risk Breakdown
Earthquake Relatively Low
Tornado Relatively Moderate
Cold Wave Relatively Moderate
Heat Wave Relatively Low
Landslide Relatively Low
Lightning Relatively Moderate
Hurricane Very Low
Riverine Flooding Relatively Low
Drought Relatively Low
Wildfire Very Low
Strong Wind Relatively Low
Ice Storm Relatively Low
Hail 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: Earthquake
Earthquake is the model's clearest example of a hazard with no season and no warning. Its expected loss is driven less by how often shaking occurs than by how much of the building stock predates modern seismic codes, so exposure can be high in places where nothing has happened for a long time.
Worth noting for Alcorn County: the model and the federal record do NOT point at the same hazard. Earthquake carries the highest modeled rating (Relatively Low), 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
Alcorn County's closest FEMA peer: Stafford County, VA
Comparisons use published FEMA declaration fields plus the National Risk Index composite for Alcorn County. Record similarity, not a safety rating.
Similar modeled NRI score
Alcorn County: NRI composite 65.0 (Relatively Low).
Similar Major-disaster share
Alcorn County: 13 of 18 of its declarations are Major.
Closest declaration profiles
Alcorn County shows 18 FEMA declarations, led by Severe Storm.
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 Alcorn County - capture-dated entries only.
Compare beyond this state
Nationwide peers by NRI score & FEMA declaration volume
Two PlainHazard-derived comparison paths for Alcorn 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.
Similar NRI composite
Nearest out-of-state counties by FEMA NRI score. This county: 65.0 (Relatively Low).
Similar declaration volume
Nearest out-of-state counties by FEMA declaration count. This county: 18. NRI peers are excluded so the two link sets stay distinct.
Further reading for this county
Understanding disaster data
Alcorn County's NFIP claims file (67 claims) and FEMA declaration history measure different federal records - this guide separates them from modeled NRI risk.
More PlainHazard guides
- Most disaster-prone counties - U.S. counties ranked by FEMA declaration totals.
- Understanding disaster data - declarations vs storm events vs NRI scores.
- Preparing for natural disasters - household checklist (not county-specific advice).
Frequently Asked Questions
What is the most common disaster type in Alcorn County?
The most common disaster type in Alcorn County is Severe Storm, with 9 declarations. Other disaster types include Hurricane (4), Winter Storm (2), Biological (2).
How does Alcorn County's FEMA declaration record compare with the Mississippi average?
The typical Mississippi county has 25.9 FEMA declaration records; Alcorn County has 18, or 30% fewer. Against the national county mean of 20.7, this county's total is 13% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Alcorn County received?
Alcorn County has received 13 major disaster declarations, representing 72% of all 18 disaster declarations.
How many flood insurance claims has Alcorn County filed?
Alcorn County has 67 National Flood Insurance Program (NFIP) claims totaling $4.3M in payments, with an average of $64.9K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Alcorn County?
No. In Alcorn County, Earthquake has the highest National Risk Index rating (Relatively Low), while Riverine Flooding leads Expected Annual Loss at about $5.3M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Alcorn County?
The most active year for disaster declarations in Alcorn 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 Alcorn County?
According to the FEMA National Risk Index, Alcorn County, Mississippi has an overall risk score of 65.0 out of 100 (Relatively Low). Social vulnerability here rates Relatively High, while community resilience comes in at Relatively Low. The Expected Annual Loss (EAL) score is Relatively Low, representing $18.7M in annualized losses.
Which natural hazard poses the greatest risk to Alcorn County?
FEMA's NRI data points to Alcorn County as of the latest release is Earthquake (risk rating: Relatively Low). Other significant hazards include Tornado (Relatively Moderate) and Cold Wave (Relatively Moderate). FEMA's modeled event frequency puts earthquake here at roughly once every 215 years. 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 Alcorn County · vintage 2026-08-25 · Methodology · Mississippi profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events