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Mississippi · FEMA + NOAA + National Risk Index

Grenada County, MS

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

27
FEMA declarations
19
Major disasters
55
NRI risk · Relatively Low
Severe Storm
Top hazard

The verdict

Two federal records point in the busier direction for Grenada County. Its 27 FEMA declarations are 4% above the Mississippi county mean and exceed the count for 78% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it in the riskiest 45%, based on modeled expected annual loss, social vulnerability, and community resilience.

Riskiest 45%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
27
FEMA declarations vs 21 national county avg
320
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 28043 · Grenada County 27 declarations · rank 702/3,266

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

  • DECL-HEAVY 27
  • MAJOR-MID 70%
  • RANK-MID #702
  • PHOTO-FINISH Greene
  • NRI-LOW 55
  • ACT-HIGH High
  • TYPE-LEAD Severe Storm
  • VS-ST-ABOVE +4%

Nearest declaration peer: Greene, MO (0 declaration gap)

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

Grenada County among high-volume declaration counties

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

declarations

What this shows Grenada County carries 27 FEMA declaration records, ranked 702 of 3,266 counties in this registry.

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

Where Grenada County ranks in the national declaration registry

Grenada County vs. high-volume counties in this registry

FEMA disaster declarations, all-time · Grenada County

27 Top 22% higher than 78% 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

Grenada County's FEMA Risk Index score

0/100100/100Mississippi avg51/10055.4/100
FEMA National Risk Index composite score vs. the Mississippi county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Grenada County is led by Riverine Flooding (about $5.6M Expected Annual Loss, Historical Loss Ratio Relatively Low), 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 Grenada County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 320 paid claims, totaling $3.7M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $11.7K 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. Grenada County's 27 federal records stand 4% 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 carries a high composite score on FEMA's National Risk Index, 55.4/100, rated Relatively Low. Its Expected Annual Loss rating is Very Low (roughly $11.9M in annualized losses), and a Very High social-vulnerability profile combined with Relatively High 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 293 years here.

71 /100

Historical Activity Index

High historical activity

Grenada 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
20/30

27 OpenFEMA declarations, full ingest window (1.3x national county average)

County Disaster Density High
13/25

27 declarations (1.0x state county average of 26)

Major Disaster Share High
18/25

19 of 27 declarations are major disasters (70%)

Hazard Diversity Very High
20/20

8 different disaster types declared in Grenada County

FEMA NRI 8-hazard radar - Grenada County

Grenada County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 25, 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 26 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 26 8-hazard mean
Grenada County NRI risk profile FIPS 28043 · displayed-hazard mean 26/100
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

27

High volume

Major Disaster share

70%

Major-heavy

NRI risk score

55

Relatively Low

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

How often does each hazard strike Grenada 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 293 years
Tornado Relatively Moderate roughly once every 3 years
Lightning Relatively Moderate an average of 65 times per year
Landslide Relatively Low roughly once every 2 years
Hail Relatively Low an average of 3 times per year
Heat Wave Relatively Low 15 modeled event-days per year
Strong Wind Relatively Moderate an average of 2 times per year
Hurricane Relatively Low roughly once every 16 years
Riverine Flooding Relatively Low an average of 2 times per year
Cold Wave Relatively Low an average of 1.2 times per year
Ice Storm Relatively Low roughly once every 1 years
Wildfire Very Low roughly once every 937 years
Drought Relatively Low 14 modeled event-days per year
Winter Weather Very Low an average of 3.2 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 10
Hurricane 6
Winter Storm 2
Severe Ice Storm 2
Biological 2
Flood 2
Tornado 2
Snowstorm 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Grenada County's record, 37% 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 - 19 70.4%

of all 27 declarations

Emergency - 8 29.6%

of all 27 declarations

FEMA Declarations Timeline

Year Declarations
2026 2
2025 1
2022 1
2021 2
2020 4
2019 1
2012 2
2011 1
2008 1
2005 1
2002 1
2001 1
1999 1
1994 1
1991 2
Show 5 earlier declaration years
1984 1
1978 1
1977 1
1973 1
1971 1

Disaster Declarations

How the 27 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 27 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
4538 SEVERE STORMS, FLOODING, AND MUDSLIDES DR Severe Storm 2020-04-23
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
4429 SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING DR Severe Storm 2019-04-23
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
1398 SEVERE STORMS, TORNADOES AND FLOODING DR Severe Storm 2001-12-07
1360 SEVERE STORMS AND TORNADOES DR Severe Storm 2001-02-23
1265 SEVERE WINTER STORMS, ICE AND FREEZING RAIN DR Severe Ice Storm 1999-01-25
1009 SEVERE WINTER STORM, FREEEZING RAIN AND SLEET DR Severe Storm 1994-02-18
Show 7 earlier declaration records
DR# Title Type Incident Date
906 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1991-05-17
895 SEVERE STORMS & FLOODING DR Flood 1991-03-05
3087 SEVERE STORMS & FLOODING EM Flood 1983-12-21
3063 TORNADOES EM Tornado 1978-04-24
3032 DROUGHT & FREEZING EM Snowstorm 1977-02-22
368 HEAVY RAINS, TORNADOES & FLOODING DR Severe Storm 1973-03-27
302 STORMS & TORNADOES DR Tornado 1971-02-22

Storm Events in Mississippi

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

320

Total Paid

$3.7M

Avg Per Claim

$11.7K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 55.4/100

Expected Annual Loss

Very Low

$11.9M/year

Social Vulnerability

Very High

Community Resilience

Relatively High

Hazard Risk Breakdown

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

Grenada County's closest FEMA peer: St. John Island, VI

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Grenada 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

Grenada County's NFIP claims file (320 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 Grenada County?
The most common disaster type in Grenada County is Severe Storm, with 10 declarations. Other disaster types include Hurricane (6), Winter Storm (2), Severe Ice Storm (2).
How does Grenada County's FEMA declaration record compare with the Mississippi average?
FEMA lists 27 declaration records for Grenada County. That is 4% above the Mississippi county mean of 25.9. Its count is also 30% 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 Grenada County received?
Grenada County has received 19 major disaster declarations, representing 70% of all 27 disaster declarations.
How many flood insurance claims has Grenada County filed?
Grenada County has 320 National Flood Insurance Program (NFIP) claims totaling $3.7M in payments, with an average of $11.7K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Grenada County?
No. In Grenada County, Earthquake has the highest National Risk Index rating (Relatively Low), while Riverine Flooding leads Expected Annual Loss at about $5.6M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Grenada County?
The most active year for disaster declarations in Grenada County was 2020, with 4 declarations. The county has FEMA disaster data spanning 1971 to 2026.
What is the FEMA National Risk Index score for Grenada County?
According to the FEMA National Risk Index, Grenada County, Mississippi has an overall risk score of 55.4 out of 100 (Relatively Low). Social vulnerability here rates Very High, while community resilience comes in at Relatively High. The Expected Annual Loss (EAL) score is Very Low, representing $11.9M in annualized losses.
Which natural hazard poses the greatest risk to Grenada County?
FEMA's NRI data points to Grenada County as of the latest release is Earthquake (risk rating: Relatively Low). Other significant hazards include Tornado (Relatively Moderate) and Lightning (Relatively Moderate). FEMA's modeled event frequency puts earthquake here at roughly once every 293 years. 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.

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