Hazard Plain Automated baseline

Rankin County, MS

Risk-assessment baseline packet

County FIPS:
28121
Release:
2026-10
Data as of:
2026-09-30
Storm Events data through:
2026-06-30

Hazard Plain is an independent product built from public federal data. It is not a FEMA document and is not reviewed or endorsed by FEMA or any state agency.

Hazard Plain release 2026-10, as of 2026-09-30.

Summary

Plan status as of 2026-09-30: Approved, expires 2026-12-06. Plan: Rankin County (FEMA plan 107540), approved 2021-12-07.

Since the plan was approved on 2021-12-07: 3 new hazard declarations (2 incidents) and 248 NOAA Storm Events records; details under "What changed since your last plan".

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Inland Flooding ($20,762,248 a year), Tornado ($12,408,040) and Hail ($7,679,478).

The tables that follow are organized by the items of FEMA's Local Mitigation Plan Review Tool, Element B (B1-a to B2-c); each heading says which item its tables support.

Plan clock

Status:
Approved, expires 2026-12-06
Plan:
Rankin County (FEMA plan 107540)
Approved:
2021-12-07
Days to expiry:
67
Update underway:
none recorded in FEMA's plan tracker

What changed since your last plan (approved 2021-12-07)

New federal declarations:
3 new hazard declarations (2 incidents): DR-4727-MS (Severe Storms, Straight-Line Winds, and Tornadoes.), EM-3640-MS (Severe Winter Storm), DR-4899-MS (Severe Winter Storm)
Storm Events records since approval:
248 records (data through 2026-06-30)
Repetitive loss now:
FMA RL 6, SRL 7 (44 CFR 77.2); any definition: 103
Repeat-flood change:
this release sets the baseline count.

Sources: 1, 2, 4, 6 (numbered list at the end)

Plan status for every jurisdiction listed in this county

Source: 1

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiryUpdate underwayNotes
Rankin County (unincorporated area)UnincorporatedApproved, expires 2026-12-06Rankin County (FEMA plan 107540)2021-12-072026-12-0667
Brandon cityCityExpired on 2026-09-28City of Brandon (FEMA plan 107302)2021-09-292026-09-28-2
Florence cityCityExpired on 2026-09-28City of Florence (FEMA plan 107545)2021-09-292026-09-28-2
Flowood cityCityApproved, expires 2027-04-28City of Flowood (FEMA plan 108082)2022-04-292027-04-28210
Pearl cityCityApproved, expires 2028-01-09City of Pearl (FEMA plan 108523)2023-01-102028-01-09466
Pelahatchie townTownApproved, expires 2027-07-19Town of Pelahatchie (FEMA plan 108137)2022-07-202027-07-19292
Puckett villageVillagePlan 112036 approved 2026-09-10, pending adoption here; not yet eligibleMEMA District 5 Regional (FEMA plan 112036), pending adoption here2026-09-10 by FEMA; not yet adopted here2031-09-09 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
Richland cityCityExpired on 2026-08-19City of Richland (FEMA plan 107544)2021-08-202026-08-19-42

State plan status and tribal plans in this state: see the state page.

Supports FEMA checklist item B1-a: hazard identification

Hazards NRI does not cover (local data needed)

  • dam failure (incl. upstream dams)
  • levee failure
  • flash flood as its own subtype
  • ice jams
  • debris flows
  • erosion (riverine and coastal)
  • land subsidence and sinkholes
  • expansive soils

The 18 National Risk Index hazards, ranked by expected annual loss (EAL)

Sources: 5, 6

Rank by EALHazardNRI risk ratingEAL ratingEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearCost of expected deaths and injuriesFEMA's dollar value per year, not property damageEAL total (see note)modeled dollars per yearStorm Events records, 1996 to 2026-06-30countStorm Events coverage note
1Inland FloodingRelatively ModerateRelatively Moderate$19,488,775$529,797$743,676$20,762,248242
2TornadoRelatively HighRelatively High$6,673,874$21,777$5,712,388$12,408,04078
3HailRelatively HighRelatively High$7,578,455$12,644$88,379$7,679,478233
4Cold WaveRelatively ModerateRelatively High$79,258$102,226$4,995,709$5,177,1933
5Heat WaveRelatively ModerateRelatively Moderate$284$361$4,487,468$4,488,1135
6HurricaneRelatively LowRelatively Moderate$2,039,178$333,012$121,615$2,493,8055Includes 1 Tropical Depression record (outside NRI's Hurricane definition).
7Strong WindRelatively HighRelatively High$1,324,831$27,886$1,138,042$2,490,759573Includes 4 High Wind and 16 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
8EarthquakeRelatively LowRelatively Low$1,369,277n/a$657,782$2,027,059Storm Events does not record earthquakes.
9LightningRelatively HighRelatively High$137,609n/a$1,015,305$1,152,91424
10Ice StormRelatively HighRelatively High$652,923n/a$102,493$755,4166
11DroughtRelatively ModerateRelatively Moderaten/a$439,515n/a$439,51517
12Winter WeatherRelatively ModerateRelatively Moderate$34,240$6$209,581$243,82720Includes 3 Sleet records (outside NRI's Winter Weather definition).
13WildfireVery LowVery Low$53,526$142$15,381$69,0490No recorded events in Storm Events since 1996 (data through 2026-06-30).
14LandslideVery LowVery Low$2,627n/a$43$2,6700No recorded events in Storm Events since 1996 (data through 2026-06-30).

Total = buildings + agriculture + population equivalence; FEMA values each expected death (or 10 injuries) at $13.7 million (2024 dollars).

NRI risk rating combines expected annual loss with social vulnerability and community resilience; EAL rating rates expected annual loss alone. Both compare this county with all U.S. counties.

Local data needed: state and local wildfire and landslide records (Storm Events records these hazards only in part).

Not applicable to this county per NRI, with no federal declaration and no Storm Events record since 1996: avalanche, coastal flooding, tsunami and volcanic activity. That is the evidence for leaving them out of the plan.

The state hazard mitigation plan also lists hazards for this county; FEMA asks the plan to explain any hazard it leaves out.

Supports FEMA checklist item B1-b: hazard location

Affects the whole county (national data give no location within it): Cold Wave, Drought, Hail, Heat Wave, Ice Storm, Lightning, Strong Wind and Winter Weather.

Inland Flooding: The FEMA Flood Insurance Rate Map (FIRM) is the required location source for flooding. See the FEMA Flood Map Service Center (https://msc.fema.gov) for this county.

Hazards that vary within the county: highest-rated census tracts

Source: 5

HazardHighest-rated census tractsNRI risk rating, score 0 to 100
Earthquaketract 203.04 (Relatively Low, 77.6); tract 207.05 (Relatively Low, 77.2); tract 204.02 (Relatively Low, 74.6)
Hurricanetract 204.02 (Relatively Moderate, 79.5); tract 210.03 (Relatively Moderate, 79.4); tract 209.01 (Relatively Moderate, 78.8)
Landslidetract 209.02 (Relatively Low, 91.2); tract 210.03 (Relatively Low, 90.6); tract 210.05 (Relatively Low, 85.8)
Tornadotract 204.02 (Very High, 96.5); tract 208.04 (Very High, 96.2); tract 202.19 (Very High, 95.8)
Wildfiretract 209.02 (Relatively Low, 80.8); tract 210.03 (Relatively Low, 80.8); tract 202.19 (Relatively Low, 79.5)

Up to 3 census tracts per hazard, highest National Risk Index rating first, then highest score; a tract number is the Census tract number (for example 203.04 is Census Tract 203.04). FEMA's Resilience Analysis and Planning Tool maps the National Risk Index for every tract: https://www.fema.gov/emergency-managers/practitioners/resilience-analysis-and-planning-tool

Supports FEMA checklist item B1-c: hazard extent

Extent: scale, observed range and worst recorded event per hazard

Sources: 6, 7

HazardScaleRecordscount and yearsObserved rangeWorst recorded eventMost damaging (when different)How it applies to jurisdictionsNote
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill3 records, 2010 to 2026 (3 zone-level)2 days to 14 days (median 5 days); 3 with a recorded value14 consecutive days, 2010-01-01 to 2010-01-14, zone-levelCountywide (zone-level records).
Frost/Freeze (outside NRI's Cold Wave definition)crop damage0
DroughtU.S. Drought Monitor scale (D0 to D4)17 records, 2006 to 2026 (17 zone-level)16 days to 84 days (median 61 days); 7 with a recorded value84 days (about 2.8 months), 2007-04-12 to 2007-07-04, a run of 5 consecutive Storm Events drought records, zone-levelDrought, 2023-11-01, $0 property; $2,940,000 crops (zone total, 2023 dollars)Countywide (zone-level records).Storm Events enters a drought at D2 or worse east of the Rockies and D3 or worse from the Rockies west (NWS Instruction 10-1605); NRI drought counts D3 and D4 only.
EarthquakeModified Mercalli (local data)0Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hailhail size (inches)322 records, 1958 to 20260.75 in to 4.5 in (median 1 in); 322 with a recorded value4.5 in hail, 1996-04-14; same size also recorded on 1993-03-30Hail, 2013-03-18, $100,000,000 property; $0 crops (2013 dollars)Event records naming jurisdictions in the plan: Brandon city (51 records), Florence city (27 records), Puckett village (17 records), Flowood city (16 records), Pearl city (12 records), Pelahatchie town (12 records), Richland city (7 records).
Excessive Heat, Heatheat index (in event narratives)5 records, 2005 to 2010 (5 zone-level)4 days to 12 days (median 5 days); 5 with a recorded value12 consecutive days, 2007-08-05 to 2007-08-16, zone-levelCountywide (zone-level records).
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson5 records, 2005 to 2021 (5 zone-level)Strongest recorded: Hurricane record (NOAA event type 'Hurricane (Typhoon)'), 2005-08-29, $300,000,000 property; $25,000,000 crops (2005 dollars), 40 direct injuries (reported for the zone); NWS zone MSZ049Countywide (zone-level records).Storm Events files every zone of a storm's episode under the storm's type; flooding from the storm is filed as Flood or Flash Flood records.
Ice StormSperry-Piltz ice scale (local data)6 records, 1996 to 2021 (6 zone-level)Ice Storm, 2011-02-03, $900,000 property; $0 crops (2011 dollars); NWS zone MSZ049Countywide (zone-level records).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)242 records, 1996 to 2026Flash Flood, 2003-04-06, $30,000,000 property; crops not reported (2003 dollars)Event records naming jurisdictions in the plan: Flowood city (35 records), Florence city (25 records), Brandon city (12 records), Pelahatchie town (9 records), Richland city (5 records), Puckett village (4 records), Pearl city (3 records).Flood depth: see the FEMA Flood Insurance Rate Map. Storm Events damage is often $0 or blank for floods, major ones included; FEMA Public Assistance by declaration (B1-d) shows which floods cost the most.
Debris Flownone (count and damage only)0
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)24 records, 2001 to 2025Lightning, 2025-04-22, $0 property; $0 crops (2025 dollars), 1 direct deathLightning, 2005-08-12, $1,200,000 property; crops not reported (2005 dollars)Event records naming jurisdictions in the plan: Brandon city (2 records), Florence city (1 record), Flowood city (1 record), Pelahatchie town (1 record), Puckett village (1 record).Storm Events lists lightning with damage or casualties.
High Wind and Strong Wind (outside NRI's Strong Wind definition)wind speed (kt and mph)20 records, 1998 to 2025 (20 zone-level)35 kt (40 mph) to 58 kt (67 mph) (median 40 kt (46 mph)); 19 with a recorded value58 kt (67 mph) measured gust, High Wind, 2024-04-10; NWS zone MSZ049High Wind, 2006-04-29, $300,000 property; crops not reported (zone total, 2006 dollars)Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)649 records, 1958 to 202635 kt (40 mph) to 90 kt (104 mph) (median 52 kt (60 mph)); 479 with a recorded value90 kt (104 mph), measurement type not recorded, Thunderstorm Wind, 1973-11-04Thunderstorm Wind, 2008-04-04, $8,000,000 property; $0 crops (2008 dollars)Event records naming jurisdictions in the plan: Brandon city (75 records), Florence city (47 records), Pelahatchie town (36 records), Flowood city (33 records), Puckett village (25 records), Pearl city (9 records), Richland city (9 records).
TornadoEnhanced Fujita (Fujita before Feb 2007)114 records, 1950 to 2026F/EF0 to F/EF5 (median F/EF1); 112 with a recorded valueF5 tornado, 1966-03-03, 35.4 mi path length (whole path, pre-1996), 33 yd wide, $25,000,000 property; crops not recorded (1966 dollars)Tornado, 2003-04-24, $50,000,000 property; crops not reported (2003 dollars)Event records naming jurisdictions in the plan: Brandon city (5 records), Pelahatchie town (4 records), Puckett village (4 records), Florence city (3 records), Flowood city (3 records), Richland city (1 record).Before 1996 a tornado is listed once, under the county where it began, with its whole path's rating and length; from 1996 on, each county lists its own segment. Length is not used to rank tornadoes (see Methods).
Wildfireacres burned (local data)0
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)20 records, 1997 to 2026 (20 zone-level)Heavy Snow, 2010-02-11, $1,200,000 property; $0 crops (2010 dollars); NWS zone MSZ049Countywide (zone-level records).

In event narratives only (local data needed): wind chill, temperature, heat index, ice thickness, acres burned and snow depth; any physical measure of debris flow and lightning.

Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records from zones that no NWS zone-county file places in this county (mostly before 2020) are not counted here (the Methods page explains the zone matching).

Dollars are nominal (as reported), labeled with the year; not adjusted for inflation.

Supports FEMA checklist item B1-d: previous occurrences

Federal declarations for this county: 24 declarations covering 19 separate hazard incidents counted in this packet (declarations for the same incident count once; non-natural and evacuation-only declarations are not counted).

Federal disaster declarations for this county

Sources: 1, 2, 3

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsFlagsNotes
2026-02-062026-01-23DR-4899-MSMajor disasterSevere Winter StormWinter Weathernone placed in this county by FEMA's record; $103,887.07 for this declaration is not placed in any county (see the state page)new since last plan; within last 5 years
2026-01-242026-01-23EM-3640-MSEmergencySevere Winter StormWinter Weatherno Public Assistance recordednew since last plan; within last 5 yearssame incident as DR-4899
2023-08-122023-06-14DR-4727-MSMajor disasterSevere Storms, Straight-Line Winds, and Tornadoes.Strong Wind; Tornadono Public Assistance recordednew since last plan; within last 5 years
2021-10-222021-08-28DR-4626-MSMajor disasterHurricane IdaHurricaneno Public Assistance recordedin the 12 months before plan approval; within last 5 years
2021-08-282021-08-28EM-3569-MSEmergencyHurricane IdaHurricaneno Public Assistance recordedin the 12 months before plan approvalsame incident as DR-4626
2021-05-042021-02-11DR-4598-MSMajor disasterSevere Winter StormsIce Storm$394,953.84in the 12 months before plan approval
2020-10-082020-10-07EM-3548-MSEmergencyHurricane DeltaHurricaneno Public Assistance recorded
2020-04-052020-01-20DR-4528-MSMajor disasterCOVID-19 PandemicNon-natural, not counted$169,368.96
2020-03-132020-01-20EM-3474-MSEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedsame incident as DR-4528
2014-04-302014-04-28DR-4175-MSMajor disasterSevere Storms, Tornadoes, and FloodingInland Flooding; Tornado$512,235.95
2012-08-292012-08-26DR-4081-MSMajor disasterHurricane IsaacHurricaneno Public Assistance recorded
2012-08-282012-08-26EM-3348-MSEmergencyTropical Storm IsaacHurricaneno Public Assistance recordedsame incident as DR-4081
2008-08-302008-08-28EM-3291-MSEmergencyHurricane GustavHurricane$20,413.49
2005-08-292005-08-29DR-1604-MSMajor disasterHurricane KatrinaHurricane$4,170,096.74
2005-07-102005-07-10DR-1594-MSMajor disasterHurricane DennisHurricane$4,379.03
2004-09-152004-09-13DR-1550-MSMajor disasterHurricane IvanHurricaneno Public Assistance recorded
2003-04-242003-04-06DR-1459-MSMajor disasterSevere Storms, Tornadoes, FloodsInland Flooding; Tornado$304,219.64
1992-11-251992-11-21DR-968-MSMajor disasterSevere Storms, High Winds & TornadoesTornado (primary); also designated: Strong Windno Public Assistance recorded
1983-06-011983-06-01DR-683-MSMajor disasterSevere Storms, Tornadoes, and FloodingInland Flooding; TornadoPA not declared for this county
1983-04-161983-04-16DR-678-MSMajor disasterSevere Storms, Flooding & TornadoesInland Flooding; TornadoPA not declared for this county
1979-04-161979-04-16DR-577-MSMajor disasterStorms, Tornadoes, FloodsInland Flooding; Tornadono Public Assistance recorded
1977-02-221977-02-22EM-3032-MSEmergencyDrought & FreezingWinter Weather (primary); also designated: Droughtno Public Assistance recorded
1974-04-181974-04-18DR-430-MSMajor disasterHeavy Rains & FloodingInland Floodingno Public Assistance recorded
1969-08-181969-08-18DR-271-MSMajor disasterHurricane CamilleHurricane (primary); also designated: Inland Floodingno Public Assistance recorded

County Public Assistance: applicants the FEMA record places in this county, including any state agencies FEMA files there; statewide rows are listed on the state page; federal share obligated, nominal dollars.

Statewide declarations

Source: 2

DeclaredIncident beganFEMA numberTypeTitleMapped hazard
1962-10-101962-10-10DR-135-MSMajor disasterChlorine Barge AccidentNon-natural, not counted
1961-02-271961-02-27DR-108-MSMajor disasterFloodsInland Flooding
1953-12-061953-12-06DR-14-MSMajor disasterTornadoTornado

FEMA recorded these with designated area Statewide and no county, so they are listed on every county page in the state and not counted with county rows. Local data needed: whether each one affected this county.

Public Assistance not placed in any Mississippi county: 3 rows, $3,519,904.13; listed on the Mississippi state page.

Source: 3

Previous occurrences by hazard, with explicit no-event rows

Sources: 2, 6, 7

HazardStorm Events records, all years on file(years in the Period column)Since plan approvalrecordsIn the 12 months before plan approvalrecordsLast 5 yearsrecordsDeclared incidents, all yearsseparate disastersDeclared since approvalseparate disastersPeriodStatement
Cold Wave3202001996 to 2026-06-30
Drought17505101996 to 2026-06-30
Earthquake000000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail32226426001955 to 2026-06-30
Heat Wave5000001996 to 2026-06-30
Hurricane5010801996 to 2026-06-30Includes 1 Tropical Depression record.
Ice Storm6010101996 to 2026-06-30
Inland Flooding24264564701996 to 2026-06-30
Landslide0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Lightning24505001996 to 2026-06-30
Strong Wind66912217123211955 to 2026-06-30Includes 4 High Wind and 16 Strong Wind records.
Tornado11419319711950 to 2026-06-30
Wildfire0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Winter Weather20545211996 to 2026-06-30Includes 3 Sleet records.

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2025-04-22Lightning$0 property; $0 crops (2025 dollars)1, 0BARNETT RES EASTnew since last plan; within last 5 yearsB1-c worst recorded: Lightning
2024-04-10High Wind58 kt (67 mph) measured gust$10,000 property; $0 crops (zone total, 2024 dollars)0, 0NWS zone MSZ049 (RANKIN), zone-levelnew since last plan; within last 5 yearsB1-c worst recorded: High Wind and Strong Wind
2014-04-28TornadoEF3, 28.59 mi within this county, 400 yd wide$13,000,000 property; $200,000 crops (2014 dollars)1, 10LAKELAND to CLARKSBURGdeaths or injuries recorded
2010-01-01Cold/Wind Chill$600,000 property; $0 crops (zone total, 2010 dollars)0, 0NWS zone MSZ049 (RANKIN), zone-levelB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2007-08-05Heat$0 property; $0 crops (zone total, 2007 dollars)0, 0NWS zone MSZ049 (RANKIN), zone-levelB1-c worst recorded: Excessive Heat, Heat
2005-08-29Hurricane (NOAA event type 'Hurricane (Typhoon)')$300,000,000 property; $25,000,000 crops (zone total, 2005 dollars)0, 40NWS zone MSZ049 (RANKIN), zone-levelB1-c worst recorded: Hurricane, Tropical Storm, Tropical Depression
2003-04-06Flash Flood$30,000,000 property; crops not reported (2003 dollars)0, 0RICHLANDB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
1996-04-14Hail4.5 in$100,000 property; crops not reported (1996 dollars)0, 0FANNINB1-c worst recorded: Hail
1992-11-21TornadoF4, 37 mi path length (whole path, pre-1996), 880 yd wide$25,000,000 property; crops not recorded (1992 dollars)10, 98location not recordeddeaths or injuries recorded
1973-11-04Thunderstorm Wind90 kt (104 mph), measurement type not recordeddamage not recorded (pre-1996 record)0, 0location not recordedB1-c worst recorded: Thunderstorm Wind
1966-03-03TornadoF5, 35.4 mi path length (whole path, pre-1996), 33 yd wide$25,000,000 property; crops not recorded (1966 dollars)0, 0location not recordedB1-c worst recorded: Tornado
1958-02-26TornadoF3, 27.6 mi path length (whole path, pre-1996), 60 yd wide$250,000 property; crops not recorded (1958 dollars)1, 14location not recordeddeaths or injuries recorded

The full list is in the Excel file, sheet "B1-d Storm Events history" (1,427 rows).

Location is the place NOAA recorded, as written in its data; it need not be a jurisdiction in this plan.

Local data needed: state-declared emergencies, from your state emergency management agency (federal data do not include them).

Tribal and special-area declarations in this state are listed on the state page.

Supports FEMA checklist item B1-e: probability of future events

Probability: FEMA annualized frequency and descriptor per hazard

Sources: 5, 6

HazardFEMA annualized frequency (modeled)unit per rowUnitIn plain termsDescriptorDescriptor basisNRI events or days in its record period (hail, wind and tornado are area-weighted, so can be fractional)NRI periodLocationNote
Cold Wave0.895event-days per yearabout 0.895 days per yearPossibleStorm Events event-days in 2 of 30 years, 1996 to 2025 (6.67%)172005-11-12 to 2024-11-12 (19 years)countywide
Drought13.6event-days per yearabout 13.6 days per yearLikelyStorm Events event-days in 6 of 30 years, 1996 to 2025 (20%)4412000 to 2025 (25.25 years; D3 and D4 only)countywide
Earthquake0.00196annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.196%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail4.62events per yearabout 4.62 per yearHighly likelyFEMA annualized frequency (modeled)175.6 (modeled)1986 to 2023 (38 years)countywide
Heat Wave15event-days per yearabout 15 days per yearLikelyStorm Events event-days in 4 of 30 years, 1996 to 2025 (13.3%)2362005-11-12 to 2024-11-12 (19 years)countywide
Hurricane0.0882events per yearabout 1 in 11 yearsPossibleFEMA annualized frequency (modeled)361851 to 2024 (Atlantic)see B1-fNRI counts hurricane and tropical storm tracks passing within storm-force wind range; federal declarations are in B1-d.
Ice Storm1.25event-days per yearabout 1.25 days per yearLikelyStorm Events event-days in 5 of 30 years, 1996 to 2025 (16.7%)851946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding3.71event-days per yearabout 3.71 days per yearHighly likelyStorm Events event-days in 28 of 30 years, 1996 to 2025 (93.3%)1041996 to 2023 (28 years)see B1-f
Landslide0.25events per year (modeled)about 1 in 4 yearsLikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning72.4days per year with a strikeabout 72.4 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind3.89events per yearabout 3.89 per yearHighly likelyFEMA annualized frequency (modeled)1481986 to 2023 (38 years)countywide
Tornado1.24events per yearabout 1.24 per yearHighly likelyFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Wildfire0.000714annual probability at a locationchance a given location in the county burns in a year: 0.0714%Storm Events records in 0 of 30 years, 1996 to 2025 (0%)not shownmodeledsee B1-fNo descriptor: no Storm Events record 1996 to 2025
Winter Weather2.53event-days per yearabout 2.53 days per yearLikelyStorm Events event-days in 12 of 30 years, 1996 to 2025 (40%)482005-11-12 to 2024-11-12 (19 years)countywide

FEMA annualized frequency (modeled) is the National Risk Index v1.20 (December 2025) estimate of how often a hazard affects this county in a year; it is not recorded events divided by years, and its unit differs by hazard (events, event-days, or days with a lightning strike per year). For earthquake, wildfire, coastal flooding and tsunami the value is the chance (or number of events) at a location in the county, not across the county, so no "1 in N years" is given and the descriptor comes from Storm Events where it has a record (none for earthquake). The Methods page gives each hazard's method, from FEMA's National Risk Index Technical Documentation v1.20.

Where NRI gives event-days, the descriptor comes from the share of years with a Storm Events record; NRI's source records more events, so the two differ.

Descriptor scale used in this packet (defined per unit)

Sources: 5, 6

UnitDescriptorDefinition
events per yearHighly likely1 or more per year
events per yearLikelyabout once in 1 to 10 years
events per yearPossibleabout once in 10 to 100 years
events per yearUnlikelyless than once in 100 years
annual probabilityLikely10% to under 100% chance in a given year
annual probabilityPossible1% to under 10% chance in a given year
annual probabilityUnlikelyunder 1% chance in a given year
event-days (share of years)Highly likelyevent-days recorded in 90% or more of years
event-days (share of years)Likelyevent-days recorded in 10% to under 90% of years
event-days (share of years)Possibleevent-days recorded in some years but under 10% of years
lightning strike-daysHighly likelycloud-to-ground strikes on 1 or more days per year

Intensity bands: historical frequency (Storm Events)

Source: 6

HazardBandYearsEventscounty-coded recordsYears in periodEvents per yearevents / years
Hail1.00-1.99 in1996 to 2025110303.67
Hail2.00 in+1996 to 202512300.4
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 20253853012.8
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 202531301.03
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 2025117303.9
TornadoEF0-11996 to 202568302.27
TornadoEF2-31996 to 20259300.3
TornadoEF4-51996 to 20250300
Tornadounrated (EFU)1996 to 20250300

The bands show how often events of each severity were recorded in this county, to profile how severe events have been (FEMA's probability item asks for the range of intensities).

Hail smaller than 1 inch is not counted: on 2010-01-05 the National Weather Service raised its severe-hail threshold from 3/4 inch to 1 inch, so smaller reports became less common after 2009 (NWS Service Change Notice 09-52). NRI hail frequency uses a 0.75 inch threshold.

Optional: future conditions. Not a required item in the 2025 FEMA Local Mitigation Planning Policy Guide; some states ask for it. The federal Climate Mapping for Resilience and Adaptation (CMRA) site gives county exposure to future climate conditions (https://resilience.climate.gov/).

Supports FEMA checklist item B1-f: hazards that vary across jurisdictions

Range of census tract risk within the county

Source: 5

HazardTractsrated of allNRI risk score, 0 to 100Tracts by rating
MinMedianMax
Cold Wave37 of 3718.973.689.5Relatively High 15, Relatively Moderate 19, Relatively Low 2, Very Low 1
Drought8 of 3767.287.197.7Relatively High 1, Relatively Moderate 2, Relatively Low 4, Very Low 1, No Rating 29
Earthquake37 of 3726.759.877.6Relatively Low 34, Very Low 3
Hail37 of 3773.496.098.7Very High 4, Relatively High 30, Relatively Moderate 3
Heat Wave37 of 373.281.593.8Relatively High 15, Relatively Moderate 19, Relatively Low 2, Very Low 1
Hurricane37 of 3750.372.379.5Relatively Moderate 3, Relatively Low 33, Very Low 1
Ice Storm37 of 3737.483.291.7Relatively High 3, Relatively Moderate 30, Relatively Low 4
Inland Flooding37 of 371.146.683.0Relatively High 1, Relatively Moderate 17, Relatively Low 12, Very Low 7
Landslide37 of 3724.468.491.2Relatively Low 5, Very Low 32
Lightning37 of 378.578.994.9Relatively High 20, Relatively Moderate 14, Relatively Low 2, Very Low 1
Strong Wind37 of 3732.784.192.4Relatively High 24, Relatively Moderate 11, Relatively Low 2
Tornado37 of 3743.187.096.5Very High 6, Relatively High 26, Relatively Moderate 3, Relatively Low 2
Wildfire37 of 3726.266.580.8Relatively Low 17, Very Low 20
Winter Weather37 of 3720.870.887.0Relatively High 7, Relatively Moderate 27, Relatively Low 3

Drought: Agriculture is all of NRI's expected annual loss for this hazard in the county, so the tract range mostly reflects where crop and livestock value is.

Rated tracts only: No Rating (score 0.0), Not Applicable and Insufficient Data tracts are counted but not used for the minimum, median and maximum.

The score ranks a tract against all U.S. tracts (100 = highest). The rating is FEMA's category for the tract's risk value, computed differently, so the two can disagree.

Frequency data for cold wave, drought, hail, heat wave, ice storm, lightning, strong wind and winter weather are county-wide or coarse (49 km grid or NWS zone), the same for every jurisdiction; the tract range mostly reflects where buildings and people are (crop and livestock value where a line above names agriculture).

Each jurisdiction (starting figures from federal data)

Sources: 1, 3, 4, 6

JurisdictionTypePlan statusRepetitive lossFMA RL and SRL (44 CFR 77.2); repeat-flood, any definitionPublic Assistance to this jurisdictionFEMA records matched by applicant name; federal share obligated, nominal dollarsEvent records naming this placeall years; since its planNotes
Rankin County (unincorporated area)UnincorporatedApproved, expires 2026-12-06FMA RL 4, SRL 3; any 31$3,093,537.630 total; 0 since its planIncludes $72,851.89 for declarations not counted as hazard incidents (DR-4528-MS).
Brandon cityCityExpired on 2026-09-28FMA RL 0, SRL 0; any 9$625,090.61145 total; 8 since its planIncludes $52,861.37 for declarations not counted as hazard incidents (DR-4528-MS).
Florence cityCityExpired on 2026-09-28FMA RL 1, SRL 2; any 7$134,990.03103 total; 14 since its plan
Flowood cityCityApproved, expires 2027-04-28FMA RL 0, SRL 2; any 24$246,274.2988 total; 17 since its plan
Pearl cityCityApproved, expires 2028-01-09FMA RL 1, SRL 0; any 19$740,852.8024 total; 0 since its plan
Pelahatchie townTownApproved, expires 2027-07-19FMA RL 0, SRL 0; any 1$135,518.1762 total; 5 since its plan
Puckett villageVillagePlan 112036 approved 2026-09-10, pending adoption here; not yet eligibleFMA RL 0, SRL 0; any 0no Public Assistance recorded51 total; no approved plan
Richland cityCityExpired on 2026-08-19FMA RL 0, SRL 0; any 8$174,703.3422 total; 0 since its plan

Repetitive-loss counts are for whole NFIP communities, which can extend beyond this county (see the note in B2-c).

County Public Assistance in B1-d also includes applicants filed under the county that are not jurisdictions in this plan (for example state agencies, special districts and nonprofits), so the jurisdiction rows add up to less.

Supports FEMA checklist items B2-a and B2-b: vulnerability and potential impacts

Local data needed

The table below gives county-level starting figures; the plan describes impacts for each jurisdiction and its own assets.

  • Critical facilities and lifelines per hazard
  • A problem statement per jurisdiction per hazard
  • Changes in development in hazard-prone areas since the last approval, or a statement of none (E1-a)
  • Future assets

County-level starter: exposure, expected annual loss and damage since the plan

Sources: 1, 2, 3, 5, 6, 7

HazardBuilding exposuremodeled dollarsAgriculture exposuremodeled dollarsPopulation exposedpeopleEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearCost of expected deaths and injuriesFEMA's dollar value per year, not property damageEAL as % of exposurebuildings; agriculture where notedStorm Events damage since 2021-12-07county-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
Cold Wave$27,569,124,716$146,795,808153,271$79,258$102,226$4,995,7090.000287%$0
Droughtn/a$10,550,721n/an/a$439,515n/a4.17% (agriculture)$2,940,000NRI has no building exposure for this hazard; agriculture shown
Earthquake$47,489,447,430n/a157,031$1,369,277n/a$657,7820.00288%
Hail$27,569,126,144$146,795,808153,271$7,578,455$12,644$88,3790.0275%$9,269,000
Heat Wave$27,569,124,716$146,795,808153,271$284$361$4,487,468under 0.0001%
Hurricane$27,567,370,782$146,795,808153,251$2,039,178$333,012$121,6150.0074%
Ice Storm$27,566,571,380n/a153,241$652,923n/a$102,4930.00237%
Inland Flooding$27,525,062,686$16,868,3588,861$19,488,775$529,797$743,676n/a (see note)$1,279,000NRI counts the full building value of any census block with some flood loss; this is not the value of buildings in the floodplain. Use local FIRM overlays for B2-a/B2-b.
Landslide$192,194,611n/a1,001$2,627n/a$430.00137%
Lightning$27,569,126,144n/a153,271$137,609n/a$1,015,3050.000499%$345,000
Strong Wind$27,569,126,144$146,795,808153,271$1,324,831$27,886$1,138,0420.00481%$2,127,500$49,000no Public Assistance recorded (1 declaration)Storm Events damage since the plan includes 1 zone-level High Wind record ($10,000) and 5 zone-level Strong Wind records ($39,000): NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition.
Tornado$27,569,126,144$146,795,808153,271$6,673,874$21,777$5,712,3880.0242%$2,720,000no Public Assistance recorded (1 declaration)
Wildfire$1,474,138,240$25,284,95817,722$53,526$142$15,3810.00363%
Winter Weather$27,569,124,716$146,795,808153,271$34,240$6$209,5810.000124%$300,000no Public Assistance recorded (2 declarations)

Totals since 2021-12-07 (Storm Events through 2026-06-30): 230 county-coded records, 230 with a damage value recorded (including $0), $15,740,500; 18 zone-level records, 18 with a damage value recorded (including $0), $3,289,000 reported for the zone; Public Assistance: none recorded on the 3 counted declarations.

FEMA does not split Public Assistance by hazard. A declaration mapped to several hazards is listed under each of them with its full amount, so the per-hazard column does not add up to the total; the unit total counts each declaration once.

NRI computes earthquake exposure on its own basis, so it exceeds the county building value in B2-a.

Supports FEMA checklist item B2-a: vulnerability (county context)

County context

Source: 5

MeasureValue
Population153,271
Building value (total, not at risk)$27,569,126,144
Agriculture value (total, not at risk)$146,795,808
NRI risk rating (all hazards)Relatively Moderate
Expected annual loss, buildings and agriculture, all hazards$40,902,225
Expected annual loss, population equivalence, all hazards (NRI values each statistical life at $13.7M; a modeled value of expected deaths and injuries, not property damage)$19,287,860
Social vulnerability ratingRelatively Low
Community resilience ratingRelatively High
NRI versionDecember 2025

FEMA's all-hazard expected annual loss adds buildings, agriculture and population equivalence; this table gives the property part and the population-equivalence part as separate rows.

Social vulnerability: higher means people are more likely to be harmed and slower to recover. Community resilience: lower means the community is less able to recover. High social vulnerability and low resilience both raise the NRI risk rating.

Supports FEMA checklist item B2-c: repetitive loss properties

Repetitive loss in this county, both definitions

Sources: 1, 4

DefinitionPropertiesSevere repetitive lossProperties
Repetitive loss, FMA definition (44 CFR 77.2)6Severe repetitive loss, FMA definition (44 CFR 77.2)7
Repetitive loss, NFIP insurance definition101Severe repetitive loss, NFIP insurance definition5

The state NFIP coordinator's list, the source FEMA's Handbook names, often uses the NFIP insurance definition (second row).

Repeat-flood properties: county and state-level rows

Sources: 1, 4

ScopeRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
County total671015103251
of which: Jackson city (plan jurisdiction listed on the Hinds County page)0030300
of which: Rankin County (unincorporated area)4331331013
of which: Brandon city0090903
of which: Florence city1272703
of which: Pearl city1019019011
of which: Pelahatchie town0010100
of which: Flowood city0222024219
of which: Richland city0080802
of which: Pearl River Valley Water Supply District (community ID not in plan data)0010100
Statewide, no county in FEMA's file1141403

3 of the county's repeat-flood properties belong to NFIP communities whose plan jurisdiction is not listed on this page (the community rows above name the page that lists it).

The statewide row counts properties FEMA's file gives with no county in this state; they are listed for reference and are not in this county's counts.

Repeat-flood properties by jurisdiction in the plan (NFIP community)

Sources: 1, 4

JurisdictionNFIP community IDRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
Rankin County (unincorporated area)2801424331331013
Brandon city2801430090903
Florence city2801441272703
Flowood city2802890222024219
Pearl city2801451019019011
Pelahatchie town2801460010100
Puckett village2801470000000
Richland city2802990080802

Counts by occupancy group for each jurisdiction are in the Excel file, sheet "B2-c Jurisdictions".

Jurisdiction rows are whole NFIP communities and need not add up to the county total: a community that extends into another county is counted in full on each jurisdiction row, while the county table counts only its part in this county.

County repeat-flood properties by occupancy group

Sources: 1, 4

Occupancy groupRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
single-family residential5462363128
2 to 4 unit residential1030301
other residential0018018018
non-residential031821914
not reported0000000

FEMA's occupancy groups have no institutional class; institutional properties are counted in non-residential or other residential in the table by occupancy group.

FMA RL and FMA SRL are the Flood Mitigation Assistance definitions (44 CFR 77.2), the ones the FEMA Local Mitigation Planning Policy Guide cites. NFIP repetitive loss (the FEMA insurance definition) is 2 or more claims over $1,000 in 10 years, and a property can leave that group once it is mitigated. Also shown: NFIP severe repetitive loss, any category, mitigated and currently insured. The Methods page gives the OpenFEMA field details.

Counts are aggregates of FEMA's public NFIP Multiple Loss Properties file (FEMA's data date 2026-08-02; file version 2026-08-04). No property is identified. County assignment is FEMA's geocode.

In this county 0 properties are FMA repetitive loss but not NFIP repetitive loss, and 95 properties are NFIP repetitive loss but not FMA repetitive loss.

Exact counts; no count suppression.

Sources

Tables cite these sources by number. The full list, for the plan's bibliography (FEMA review item A4-a):

  1. FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-29T134039Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)
  2. FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-29T162832Z, pulled 2026-09-30, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)
  3. FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-29T150754Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)
  4. FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)
  5. FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-30, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)
  6. NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-30, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/
  7. NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-30, https://www.weather.gov/gis/ZoneCounty
  8. U.S. Census Bureau, Census 2024 Gazetteer, 2020 place by county, CT county-to-cousub crosswalk, version 2024-gazetteer, pulled 2026-09-30, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_counties_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_cousubs_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_place_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_unsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_elsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_scsd_national.zip, https://www2.census.gov/geo/docs/reference/codes2020/national_place_by_county2020.txt, https://www2.census.gov/geo/docs/reference/ct_change/ct_cou_to_cousub_crosswalk.xlsx (used to match place names and codes; no table prints its values)

What this packet is and what the plan adds

This packet is the federal data for the plan's risk assessment (the summary on page 1 says how it is organized); the plan and FEMA's review decide whether each item is met.

The plan adds what only the community has: local data on assets, critical facilities, development and each jurisdiction's impacts; local hazard history, including state-declared emergencies; the mitigation strategy; and adoption.

How the federal data are built: National Risk Index values are FEMA's model, not counts of events. Storm Events is more complete from 1996; zone-level records are placed by forecast zone, not by location in the county. Public Assistance for a jurisdiction is matched by applicant name. The Methods page gives every rule and the known edge cases.

OpenFEMA disclaimer

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

Reuse, citation and corrections

Reuse and citation: Hazard Plain text and tables are licensed under Creative Commons Attribution 4.0 International (CC BY 4.0, https://creativecommons.org/licenses/by/4.0/); credit Hazard Plain and the release. The underlying federal data are public domain; OpenFEMA data are also subject to the OpenFEMA terms and conditions.

Cite this: Hazard Plain (2026). Rankin County, MS: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 28121). Automated baseline. https://hazardplain.org/ms/28121/ Built from FEMA OpenFEMA, the FEMA National Risk Index and NOAA NCEI Storm Events; source versions in the packet's Sources list.

Corrections: to report an error, name the packet, the table and what your records show. Contact: contact@hazardplain.org