Hazard Plain Automated baseline

Greenville County, SC

Risk-assessment baseline packet

County FIPS:
45045
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 2031-05-31. Plan: Greenville County (FEMA plan 111513), approved 2026-06-01.

Since the plan was approved on 2026-06-01: no new federal declaration.

NOAA Storm Events records since that date: 2 records (data through 2026-06-30).

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Inland Flooding ($104,453,044 a year), Tornado ($19,584,753) and Cold Wave ($14,971,691).

Repetitive-loss flood properties now: FMA RL 6, SRL 16 (44 CFR 77.2); any definition: 62.

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 2031-05-31
Plan:
Greenville County (FEMA plan 111513)
Approved:
2026-06-01
Days to expiry:
1,704

What changed since your last plan (approved 2026-06-01)

New federal declarations:
none
Storm Events records since approval:
2 records (data through 2026-06-30)
Repetitive loss now:
FMA RL 6, SRL 16 (44 CFR 77.2); any definition: 62
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
Greenville County (unincorporated area)UnincorporatedApproved, expires 2031-05-31Greenville County (FEMA plan 111513)2026-06-012031-05-311,704
Fountain Inn cityCityPlan 111513 approved 2026-06-01, pending adoption here; not yet eligibleGreenville County (FEMA plan 111513), pending adoption here2026-06-01 by FEMA; not yet adopted here2031-05-31 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
Greenville cityCityApproved, expires 2031-01-13City of Greenville HMP (FEMA plan 111177)2026-01-142031-01-131,566FEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
Greer cityCityApproved, expires 2031-05-31Greenville County (FEMA plan 111513)2026-06-012031-05-311,704Also approved under plan 108757 (Spartanburg County, expires 2028-03-13). FEMA's plan status map shows one plan per jurisdiction and may show one of these; this packet uses the approved plan that expires last. this jurisdiction approved 2026-06-18
Mauldin cityCityPlan 111513 approved 2026-06-01, pending adoption here; not yet eligibleGreenville County (FEMA plan 111513), pending adoption here2026-06-01 by FEMA; not yet adopted here2031-05-31 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
Simpsonville cityCityApproved, expires 2031-05-31Greenville County (FEMA plan 111513)2026-06-012031-05-311,704this jurisdiction approved 2026-09-14
Travelers Rest cityCityPlan 111513 approved 2026-06-01, pending adoption here; not yet eligibleGreenville County (FEMA plan 111513), pending adoption here2026-06-01 by FEMA; not yet adopted here2031-05-31 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
MetroconnectsWater/Sewer AuthorityApproved, expires 2028-12-04Renewable Water Resources and MetroConnects (FEMA plan 109407)2023-12-052028-12-04796
Renewable Water ResourcesWater/Sewer AuthorityApproved, expires 2028-12-04Renewable Water Resources and MetroConnects (FEMA plan 109407)2023-12-052028-12-04796

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 HighRelatively High$102,570,014$45,683$1,837,347$104,453,044122
2TornadoRelatively HighRelatively High$8,555,769$379$11,028,605$19,584,75318
3Cold WaveRelatively HighRelatively High$23,051$828,912$14,119,728$14,971,69122Includes 2 Frost/Freeze records (outside NRI's Cold Wave definition; counted in this table and in B1-d, not in the B1-e descriptor).
4EarthquakeRelatively ModerateRelatively Moderate$7,341,608n/a$2,156,399$9,498,007Storm Events does not record earthquakes.
5Ice StormVery HighVery High$5,666,153n/a$613,269$6,279,4228
6LightningVery HighVery High$331,674n/a$3,495,336$3,827,01013
7HurricaneRelatively ModerateRelatively Moderate$3,313,044$14,392$162,414$3,489,8502
8Strong WindRelatively HighRelatively High$276,943$2,522$1,969,828$2,249,293474Includes 27 High Wind and 8 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
9HailRelatively ModerateRelatively Moderate$1,579,864$53,290$556,956$2,190,110363
10Heat WaveRelatively ModerateRelatively Moderate$116$6$2,115,560$2,115,6824
11DroughtRelatively LowRelatively Lown/a$148,728n/a$148,72839
12Winter WeatherRelatively LowRelatively Moderate$38,380$44$52,585$91,008122Includes 3 Sleet records (outside NRI's Winter Weather definition).
13WildfireVery LowVery Low$57,547$10$14,956$72,5130Declared 2 times; no Storm Events record of this type.
14LandslideRelatively LowRelatively Low$15,070n/a$1,519$16,5891

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 records (Storm Events records this hazard 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 21.05 (Relatively Moderate, 82.6); tract 17 (Relatively Moderate, 81.8); tract 28.20 (Relatively Moderate, 81.8)
Hurricanetract 19 (Relatively Low, 77.7); tract 28.20 (Relatively Low, 73.5); tract 25.03 (Relatively Low, 72.9)
Landslidetract 24.04 (Relatively Moderate, 97.3); tract 40.04 (Relatively Moderate, 97.2); tract 41.02 (Relatively Moderate, 95.7)
Tornadotract 19 (Very High, 93.8); tract 25.03 (Relatively High, 88.2); tract 30.10 (Relatively High, 85.8)
Wildfiretract 39.02 (Relatively Low, 78.7); tract 40.04 (Relatively Low, 78.6); tract 39.03 (Relatively Low, 78.0)

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 21.05 is Census Tract 21.05). 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 chill20 records, 1996 to 2026 (20 zone-level)1 day to 31 days (median 2 days); 17 with a recorded valueDecember 2000 (1 monthly summary record), zone-levelCold/Wind Chill, 2017-03-16, $0 property; $50,000,000 crops, reported for the zone (2017 dollars) (as recorded; larger than this county's annual agriculture value in the National Risk Index (the county or state extension service keeps crop loss records))Countywide (zone-level records).Wind chill: in event narratives only (local data needed).
Frost/Freeze (outside NRI's Cold Wave definition)crop damage2 records, 2004 to 2007 (2 zone-level)Frost/Freeze, 2007-04-08, $6,000,000 crop damage (2007 dollars); NWS zone SCZ006Countywide (zone-level records).Temperature: in event narratives only (local data needed).
DroughtU.S. Drought Monitor scale (D0 to D4)39 records, 1998 to 2026 (39 zone-level)31 days to 276 days (median 76.5 days); 12 with a recorded value276 days (9 months), 2007-05-01 to 2008-01-31, a run of 9 consecutive Storm Events drought records, zone-levelCountywide (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)429 records, 1959 to 20250.75 in to 3 in (median 0.88 in); 429 with a recorded value3 in hail, 2011-05-10; same size also recorded on 1985-06-07Hail, 1994-07-19, $500,000 property; crops not recorded (1994 dollars)Event records naming jurisdictions in the plan: Simpsonville city (40 records), Greenville city (37 records), Greer city (27 records), Mauldin city (20 records), Fountain Inn city (15 records), Travelers Rest city (13 records).
Excessive Heat, Heatheat index (in event narratives)4 records, 1999 to 2012 (4 zone-level)1 day to 3 days (median 1 day); 3 with a recorded value3 consecutive days, 2012-06-29 to 2012-07-01, zone-levelCountywide (zone-level records).Heat index: in event narratives only (local data needed).
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson2 records, 2020 to 2024 (2 zone-level)Strongest recorded: Tropical Storm record, 2024-09-27, $15,000,000 property; $0 crops (2024 dollars), 4 direct deaths (reported for the zone); NWS zone SCZ106Countywide (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)8 records, 1996 to 2026 (8 zone-level)Ice Storm, 2002-12-04, $12,000,000 property; crops not reported (2002 dollars); NWS zone SCZ006Countywide (zone-level records).Ice thickness: in event narratives only (local data needed).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)122 records, 1996 to 2024 (18 zone-level)Flash Flood, 2004-07-29, $3,500,000 property; crops not reported (2004 dollars)Event records naming jurisdictions in the plan: Greenville city (27 records), Mauldin city (5 records), Greer city (4 records), Fountain Inn city (3 records), Simpsonville city (3 records), Travelers Rest city (1 record). Zone-level records (18) apply countywide.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)1 record, 2006 (1 zone-level)No damage reported in 1 record.Countywide (zone-level records).Physical measure: in event narratives only (local data needed).
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)13 records, 1996 to 2023Lightning, 2000-06-20, $400,000 property; crops not reported (2000 dollars)Event records naming jurisdictions in the plan: Greenville city (3 records), Greer city (3 records), Simpsonville city (1 record).Storm Events lists lightning with damage or casualties; physical measure in event narratives only (local data needed).
High Wind and Strong Wind (outside NRI's Strong Wind definition)wind speed (kt and mph)35 records, 1996 to 2018 (35 zone-level)40 kt (46 mph) to 70 kt (81 mph) (median 50 kt (58 mph)); 29 with a recorded value70 kt (81 mph) estimated, High Wind, 2002-12-13; NWS zone SCZ003High Wind, 2007-04-16, $500,000 property; $0 crops, reported for the zone (2007 dollars)Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)579 records, 1955 to 202640 kt (46 mph) to 85 kt (98 mph) (median 50 kt (58 mph)); 455 with a recorded value85 kt (98 mph), measurement type not recorded, Thunderstorm Wind, 1990-04-10, 4 direct injuriesThunderstorm Wind, 2008-07-21, $500,000 property; $0 crops (2008 dollars)Event records naming jurisdictions in the plan: Greenville city (53 records), Simpsonville city (42 records), Mauldin city (23 records), Travelers Rest city (22 records), Greer city (20 records), Fountain Inn city (15 records).
TornadoEnhanced Fujita (Fujita before Feb 2007)37 records, 1952 to 2024F/EF0 to F/EF3 (median F/EF1); 36 with a recorded valueF3 tornado, 1973-05-27, 16 mi path length (whole path, pre-1996), 100 yd wide, $2,500,000 property; crops not recorded (1973 dollars), 17 direct injuriesTornado, 2020-04-25, $5,000,000 property; $0 crops (2020 dollars)Event records naming jurisdictions in the plan: Simpsonville city (2 records), Greenville city (1 record), Mauldin 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)0Acres burned: in event narratives only (local data needed).
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)122 records, 1996 to 2026 (122 zone-level)Winter Storm, 1996-01-07, $5,000 property; crops not reported (1996 dollars); NWS zone SCZ003Countywide (zone-level records).Snow depth: in event narratives only (local data needed).

Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records whose zone 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.

A monthly summary record covers most or all of a month; it does not count days at wave conditions.

Supports FEMA checklist item B1-d: previous occurrences

Federal declarations for this county: 26 declarations covering 18 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
2026-04-072026-01-21DR-4908-SCMajor disasterSevere Winter StormWinter Weather$12,456.21in the 12 months before plan approval; within last 5 years
2026-01-232026-01-21EM-3632-SCEmergencySevere Winter StormWinter Weatherno Public Assistance recordedin the 12 months before plan approval; within last 5 yearssame incident as DR-4908
2025-03-232025-03-23FM-5576-SCFire managementTable Rock Fire ComplexWildfireno Public Assistance recordedwithin last 5 years
2024-09-292024-09-25DR-4829-SCMajor disasterHurricane HeleneHurricane (primary); also designated: Inland Flooding, Landslide, Tornado$106,069,338.10within last 5 years
2024-09-262024-09-25EM-3619-SCEmergencyHurricane HeleneHurricane (primary); also designated: Inland Flooding, Landslide, Tornadono Public Assistance recordedwithin last 5 yearssame incident as DR-4829
2024-08-052024-08-04EM-3606-SCEmergencyHurricane DebbyHurricane (primary); also designated: Inland Floodingno Public Assistance recordedwithin last 5 years
2023-08-312023-08-29EM-3597-SCEmergencyHurricane IdaliaHurricane (primary); also designated: Inland Floodingno Public Assistance recordedwithin last 5 years
2022-11-212022-09-25DR-4677-SCMajor disasterHurricane IanHurricaneno Public Assistance recordedwithin last 5 years
2022-09-292022-09-25EM-3585-SCEmergencyHurricane IanHurricaneno Public Assistance recordedwithin last 5 yearssame incident as DR-4677
2020-03-272020-01-20DR-4492-SCMajor disasterCOVID-19 PandemicNon-natural, not counted$294,731,884.34
2020-03-172020-02-06DR-4479-SCMajor disasterSevere Storms, Tornadoes, Straight-Line Winds, and FloodingInland Flooding; Strong Wind; Tornado$1,561,567.31
2020-03-132020-01-20EM-3470-SCEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedsame incident as DR-4492
2019-09-012019-08-31EM-3421-SCEmergencyHurricane DorianHurricaneno Public Assistance recorded
2018-09-102018-09-08EM-3400-SCEmergencyHurricane FlorenceHurricaneno Public Assistance recorded
2017-10-162017-09-06DR-4346-SCMajor disasterHurricane IrmaHurricane$81,937.93
2017-09-072017-09-06EM-3386-SCEmergencyHurricane IrmaHurricaneno Public Assistance recordedsame incident as DR-4346
2016-11-122016-11-12FM-5162-SCFire managementPinnacle Mountain FireWildfireno Public Assistance recorded
2016-10-062016-10-04EM-3378-SCEmergencyHurricane MatthewHurricaneno Public Assistance recorded
2015-10-052015-10-01DR-4241-SCMajor disasterSevere Storms and FloodingInland FloodingPA not declared for this county
2015-10-032015-10-01EM-3373-SCEmergencySevere Storms and FloodingInland Floodingno Public Assistance recordedsame incident as DR-4241
2014-02-122014-02-10EM-3369-SCEmergencySevere Winter StormIce Stormno Public Assistance recorded
2006-01-202005-12-15DR-1625-SCMajor disasterSevere Ice StormIce Storm$5,031,731.18
2005-09-102005-08-29EM-3233-SCEmergencyHurricane Katrina EvacuationHurricane: evacuation support, not a local hazard event; not counted$491,970.21
2004-10-072004-09-06DR-1566-SCMajor disasterTropical Storm FrancesHurricanePA not declared for this county
2003-01-082002-12-04DR-1451-SCMajor disasterSevere Ice StormIce Storm$698,772.24
1977-08-041977-08-04EM-3047-SCEmergencyDroughtDroughtno Public Assistance recorded

School districts and special districts in this county: $9,790,381.08 (included in the county total above). Public Assistance matched by applicant name to the school districts and special districts FEMA lists as plan participants in this county. They have no row of their own in the jurisdiction table, so their total is listed here. These dollars are already included in the county PA column of the declarations table (the FEMA record places each applicant in this county), so this line is not added to it.

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
1955-08-201955-08-20DR-44-SCMajor disasterHurricanesHurricane (primary); also designated: Inland Flooding
1954-10-171954-10-17DR-29-SCMajor disasterHurricaneHurricane (primary); also designated: Inland Flooding

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 filed under this county for declarations that do not list it: 1 row, $32,662.12

Sources: 2, 3

FEMA numberDeclaredTitleApplicantPA obligatedfederal share obligated, nominal dollars
DR-1313-SC2000-01-31Severe Winter StormFountain Inn, City of$32,662.12

FEMA's Public Assistance summaries file these applicants under this county, but FEMA's declaration rows for these disasters do not designate it (an electric cooperative or district serving several counties, for example). Not in any declaration row above and not counted.

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 Wave22027001996 to 2026-06-30Includes 2 Frost/Freeze records.
Drought39022101996 to 2026-06-30
Earthquake000000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail4290328001955 to 2026-06-30
Heat Wave4000001996 to 2026-06-30
Hurricane2001901996 to 2026-06-30
Ice Storm8011301996 to 2026-06-30
Inland Flooding122009501996 to 2026-06-30
Landslide1000101996 to 2026-06-30
Lightning13001001996 to 2026-06-30
Strong Wind6142852101955 to 2026-06-30Includes 27 High Wind and 8 Strong Wind records.
Tornado37001201950 to 2026-06-30
Wildfire0000201996 to 2026-06-30No Storm Events records of this type; 2 federal declared incidents (see declarations table)
Winter Weather122038101996 to 2026-06-30Includes 3 Sleet records.

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2024-09-27Tropical Storm$15,000,000 property; $0 crops, reported for the zone (2024 dollars)4, 0NWS zone SCZ106 (CENTRAL GREENVILLE), zone-levelwithin last 5 yearsdeaths or injuries recorded
2014-08-09Flash Flood$1,500,000 property; $0 crops (2014 dollars)2, 0BRANDON to PARK PLACEdeaths or injuries recorded
2011-05-10Hail3 indamage not reported0, 0LOCUST HILLB1-c worst recorded: Hail
2007-04-08Frost/Freeze$0 property; $6,000,000 crops, reported for the zone (2007 dollars)0, 0NWS zone SCZ006 (GREATER GREENVILLE), zone-levelB1-c worst recorded: Frost/Freeze
2004-07-29Flash Flood$3,500,000 property; crops not reported (2004 dollars)0, 0GREENVILLEB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2002-12-13High Wind70 kt (81 mph) estimateddamage not reported0, 0NWS zone SCZ003 (GREENVILLE MOUNTAINS), zone-levelB1-c worst recorded: High Wind and Strong Wind
2002-12-04Ice Storm$12,000,000 property; crops not reported, reported for the zone (2002 dollars)0, 0NWS zone SCZ006 (GREATER GREENVILLE), zone-levelB1-c worst recorded: Ice Storm
2000-12-01Extreme Cold/Wind Chilldamage not reported0, 0NWS zone SCZ003 (NORTHERN GREENVILLE), zone-levelB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2000-06-20Lightning$400,000 property; crops not reported (2000 dollars)0, 0GREENVILLEB1-c worst recorded: Lightning
1996-12-25Cold/Wind Chilldamage not reported2, 0NWS zone SCZ006 (GREATER GREENVILLE), zone-leveldeaths or injuries recorded
1990-04-10Thunderstorm Wind85 kt (98 mph), measurement type not recordeddamage not recorded (pre-1996 record)0, 4location not recordedB1-c worst recorded: Thunderstorm Wind
1973-05-27TornadoF3, 16 mi path length (whole path, pre-1996), 100 yd wide$2,500,000 property; crops not recorded (1973 dollars)0, 17location not recordedB1-c worst recorded: Tornado

The full list is in the Excel file, sheet "B1-d Storm Events history" (1,413 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 Wave0.38event-days per yearabout 0.38 days per yearLikely (from Storm Events: 10 of 30 years)event-days in 10 of 30 years, 1996 to 2025 (33.3%)7.212005-11-12 to 2024-11-12 (19 years)countywide
Drought42.1event-days per yearabout 42.1 days per yearLikely (from Storm Events: 9 of 30 years)event-days in 9 of 30 years, 1996 to 2025 (30%)1,5542000 to 2025 (25.25 years; D3 and D4 only)countywide
Earthquake0.00254annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.254%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail4.8events per yearabout 4.8 per yearHighly likelyFEMA annualized frequency (modeled)182.4 (modeled)1986 to 2023 (38 years)countywide
Heat Wave1.14event-days per yearabout 1.14 days per yearLikely (from Storm Events: 3 of 30 years)event-days in 3 of 30 years, 1996 to 2025 (10%)18.32005-11-12 to 2024-11-12 (19 years)countywide
Hurricane0.0438events per yearabout 1 in 23 yearsPossibleFEMA annualized frequency (modeled)161851 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 Storm1.83event-days per yearabout 1.83 days per yearLikely (from Storm Events: 6 of 30 years)event-days in 6 of 30 years, 1996 to 2025 (20%)1241946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding2.79event-days per yearabout 2.79 days per yearLikely (from Storm Events: 25 of 30 years)event-days in 25 of 30 years, 1996 to 2025 (83.3%)781996 to 2023 (28 years)see B1-f
Landslide0.889events per year (modeled)about 0.89 per yearLikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning56.3days per year with a strikeabout 56.3 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind2.56events per yearabout 2.56 per yearHighly likelyFEMA annualized frequency (modeled)981986 to 2023 (38 years)countywide
Tornado0.464events per yearabout 1 in 2 yearsLikelyFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Wildfire0.000288annual probability at a locationchance a given location in the county burns in a year: 0.0288%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 Weather4.76event-days per yearabout 4.76 days per yearLikely (from Storm Events: 26 of 30 years)event-days in 26 of 30 years, 1996 to 2025 (86.7%)90.42005-11-12 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 2025163305.43
Hail2.00 in+1996 to 202513300.433
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 20254153013.8
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 202511300.367
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 202510300.333
TornadoEF0-11996 to 202516300.533
TornadoEF2-31996 to 20252300.0667
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 Wave123 of 12336.769.696.0Very High 1, Relatively High 24, Relatively Moderate 88, Relatively Low 10
Drought11 of 12381.988.491.6Relatively Low 11, No Rating 112
Earthquake123 of 12332.365.982.6Relatively Moderate 11, Relatively Low 107, Very Low 5
Hail123 of 12340.164.684.3Relatively Moderate 30, Relatively Low 93
Heat Wave123 of 1232.723.252.3Relatively Low 81, Very Low 42
Hurricane123 of 12348.658.777.7Relatively Low 118, Very Low 5
Ice Storm123 of 12371.792.698.9Very High 4, Relatively High 81, Relatively Moderate 38
Inland Flooding123 of 1234.756.598.6Very High 2, Relatively High 29, Relatively Moderate 42, Relatively Low 38, Very Low 12
Landslide123 of 12312.442.097.3Relatively Moderate 3, Relatively Low 6, Very Low 114
Lightning123 of 12340.479.296.6Very High 1, Relatively High 67, Relatively Moderate 47, Relatively Low 8
Strong Wind123 of 12322.949.777.3Relatively Moderate 44, Relatively Low 79
Tornado123 of 12342.466.893.8Very High 1, Relatively High 25, Relatively Moderate 82, Relatively Low 15
Wildfire120 of 12320.646.478.7Relatively Low 21, Very Low 99, No Rating 3
Winter Weather123 of 12318.327.445.2Relatively Low 122, Very Low 1

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
Greenville County (unincorporated area)UnincorporatedApproved, expires 2031-05-31FMA RL 4, SRL 6; any 41$37,560,491.370 total; 0 since its planIncludes $210,085.41 for declarations not counted as hazard incidents (DR-4492-SC, EM-3233-SC).
Fountain Inn cityCityPlan 111513 approved 2026-06-01, pending adoption here; not yet eligibleFMA RL 0, SRL 0; any 0$685,260.4833 total; no approved plan
Greenville cityCityApproved, expires 2031-01-13FMA RL 0, SRL 1; any 5$11,503,511.91121 total; 0 since its planIncludes $488,263.01 for declarations not counted as hazard incidents (EM-3233-SC).
Greer cityCityApproved, expires 2031-05-31FMA RL 0, SRL 0; any 0$1,518,015.1954 total; 0 since its planAlso approved under plan 108757 (Spartanburg County, expires 2028-03-13). FEMA's plan status map shows one plan per jurisdiction and may show one of these; this packet uses the approved plan that expires last.
Mauldin cityCityPlan 111513 approved 2026-06-01, pending adoption here; not yet eligibleFMA RL 2, SRL 8; any 13$1,138,356.0149 total; no approved plan
Simpsonville cityCityApproved, expires 2031-05-31FMA RL 0, SRL 1; any 3$3,913,512.7488 total; 0 since its plan
Travelers Rest cityCityPlan 111513 approved 2026-06-01, pending adoption here; not yet eligibleFMA RL 0, SRL 0; any 0$229,815.2336 total; no approved plan

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

School districts and special districts get a plan clock row only.

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 2026-06-01county-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$119,565,617,038$17,148,334525,347$23,051$828,912$14,119,728under 0.0001%
Droughtn/a$11,794,971n/an/a$148,728n/a1.26% (agriculture)NRI has no building exposure for this hazard; agriculture shown
Earthquake$205,874,373,295n/a525,534$7,341,608n/a$2,156,3990.00357%
Hail$119,565,617,038$17,148,334525,347$1,579,864$53,290$556,9560.00132%
Heat Wave$119,565,617,038$17,148,334525,347$116$6$2,115,560under 0.0001%
Hurricane$119,526,985,791$17,148,334525,146$3,313,044$14,392$162,4140.00277%
Ice Storm$119,560,050,934n/a525,325$5,666,153n/a$613,2690.00474%
Inland Flooding$119,528,279,784$1,383,9395,882$102,570,014$45,683$1,837,347n/a (see note)NRI 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$3,359,270,840n/a15,484$15,070n/a$1,5190.000449%
Lightning$119,565,617,038n/a525,347$331,674n/a$3,495,3360.000277%
Strong Wind$119,565,617,038$17,148,334525,347$276,943$2,522$1,969,8280.000232%$0
Tornado$119,565,617,038$17,148,334525,347$8,555,769$379$11,028,6050.00716%
Wildfire$8,951,084,580$3,023,87954,202$57,547$10$14,9560.000643%
Winter Weather$119,542,021,622$17,148,334525,214$38,380$44$52,585under 0.0001%

Totals since 2026-06-01 (Storm Events through 2026-06-30): 2 county-coded records, 2 with a damage value recorded (including $0), $0; 0 zone-level records, 0 with a damage value recorded (including $0), $0 reported for the zone; Public Assistance: no counted declaration since the plan.

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
Population525,347
Building value (total, not at risk)$119,565,617,038
Agriculture value (total, not at risk)$17,148,334
NRI risk rating (all hazards)Relatively Moderate
Expected annual loss, buildings and agriculture, all hazards$130,863,197
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)$38,124,503
Social vulnerability ratingRelatively Low
Community resilience ratingRelatively Moderate
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)16
Repetitive loss, NFIP insurance definition54Severe repetitive loss, NFIP insurance definition10

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 total616541062629
of which: Greenville County (unincorporated area)4634241519
of which: Greenville city0151504
of which: Simpsonville city0131302
of which: Mauldin city281261314
Statewide, no county in FEMA's file0020200

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
Greenville County (unincorporated area)4500894634241519
Fountain Inn city4502090000000
Greenville city4500910151504
Greer city4502000000000
Mauldin city450198281261314
Simpsonville city4500920131302
Travelers Rest city4502640000000

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 residential61549957625
2 to 4 unit residential0010101
other residential0000000
non-residential0141403
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 3 properties are FMA repetitive loss but not NFIP repetitive loss, and 51 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, organized by the items of FEMA's Local Mitigation Plan Review Tool, Element B. Each section heading names the item its tables support; the plan and FEMA's review decide whether the 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). Greenville County, SC: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 45045). Automated baseline. https://hazardplain.org/sc/45045/ 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: [email protected]

Hazard Plain release 2026-10. As of 2026-09-30; Storm Events data through 2026-06-30. Automated baseline.