Hazard Plain Automated baseline

Clark County, AR

Risk-assessment baseline packet

County FIPS:
05019
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 2030-08-26. Plan: Clark County (FEMA plan 109386), approved 2025-08-27.

Since the plan was approved on 2025-08-27: 1 new hazard declaration (1 incident) and 10 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 ($3,593,985 a year), Tornado ($1,894,942) and Lightning ($1,091,877).

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 2030-08-26
Plan:
Clark County (FEMA plan 109386)
Approved:
2025-08-27
Days to expiry:
1,426

What changed since your last plan (approved 2025-08-27)

New federal declarations:
1 new hazard declaration (1 incident): EM-3636-AR (Severe Winter Storm)
Storm Events records since approval:
10 records (data through 2026-06-30)
Repetitive loss now:
FMA RL 0, SRL 0 (44 CFR 77.2); any definition: 4
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
Clark CountyCountyApproved, expires 2030-08-26Clark County (FEMA plan 109386)2025-08-272030-08-261,426this jurisdiction approved 2025-07-14
Amity cityCityPlan 109386 approved 2025-08-27, pending adoption here; not yet eligibleClark County (FEMA plan 109386), pending adoption here2025-08-27 by FEMA; not yet adopted here2030-08-26 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
Arkadelphia cityCityApproved, expires 2030-08-26Clark County (FEMA plan 109386)2025-08-272030-08-261,426
Caddo Valley townTownApproved, expires 2030-08-26Clark County (FEMA plan 109386)2025-08-272030-08-261,426
Gum Springs townTownPlan 109386 approved 2025-08-27, pending adoption here; not yet eligibleClark County (FEMA plan 109386), pending adoption here2025-08-27 by FEMA; not yet adopted here2030-08-26 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
Gurdon cityCityApproved, expires 2030-08-26Clark County (FEMA plan 109386)2025-08-272030-08-261,426
Okolona townTownApproved, expires 2030-08-26Clark County (FEMA plan 109386)2025-08-272030-08-261,426
Whelen Springs townTownApproved, expires 2030-08-26Clark County (FEMA plan 109386)2025-08-272030-08-261,426
Arkadelphia School DistrictSchool/School DistrictApproved, expires 2030-08-26Clark County (FEMA plan 109386)2025-08-272030-08-261,426
Gurdon School DistrictSchool/School DistrictPlan 109386 approved 2025-08-27, pending adoption here; not yet eligibleClark County (FEMA plan 109386), pending adoption here2025-08-27 by FEMA; not yet adopted here2030-08-26 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
Henderson State UniversityCollege/UniversityPlan 109386 approved 2025-08-27, pending adoption here; not yet eligibleClark County (FEMA plan 109386), pending adoption here2025-08-27 by FEMA; not yet adopted here2030-08-26 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
Ouachita Baptist UniversityCollege/UniversityPlan 109386 approved 2025-08-27, pending adoption here; not yet eligibleClark County (FEMA plan 109386), pending adoption here2025-08-27 by FEMA; not yet adopted here2030-08-26 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.

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 LowVery Low$3,395,834$83,451$114,700$3,593,985137
2TornadoRelatively ModerateRelatively Low$712,641$872$1,181,429$1,894,94213
3LightningRelatively HighRelatively High$15,449n/a$1,076,429$1,091,87711
4EarthquakeRelatively LowRelatively Low$525,066n/a$249,839$774,905Storm Events does not record earthquakes.
5Ice StormRelatively HighRelatively High$706,936n/a$39,164$746,0997
6Heat WaveRelatively LowRelatively Low$51$113$651,737$651,90211
7Strong WindRelatively ModerateRelatively Moderate$294,446$45$356,948$651,440198Includes 1 High Wind and 7 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
8HailRelatively LowRelatively Low$451,772$12,452$32,346$496,570142
9DroughtRelatively LowRelatively Lown/a$98,599n/a$98,59922
10Cold WaveVery LowVery Low$4,886$33$83,555$88,4733Includes 3 Frost/Freeze records (outside NRI's Cold Wave definition; counted in this table and in B1-d, not in the B1-e descriptor).
11HurricaneVery LowVery Low$50,490$9,185$2,387$62,0636Includes 3 Tropical Depression records (outside NRI's Hurricane definition).
12Winter WeatherRelatively LowRelatively Low$34,994$105$3,715$38,81344
13WildfireVery LowVery Low$9,234$21$2,613$11,8688
14LandslideVery LowVery Low$1,719n/a$141$1,8600No 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 landslide 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 9536.01 (Relatively Moderate, 82.1); tract 9538 (Relatively Moderate, 81.7); tract 9536.02 (Relatively Low, 76.5)
Hurricanetract 9538 (Relatively Low, 54.8); tract 9536.01 (Relatively Low, 54.7); tract 9537 (Relatively Low, 53.6)
Landslidetract 9537 (Relatively Low, 94.2); tract 9536.02 (Relatively Low, 88.3); tract 9539.01 (Very Low, 79.8)
Tornadotract 9536.01 (Very High, 94.7); tract 9538 (Relatively High, 93.3); tract 9537 (Relatively High, 92.6)
Wildfiretract 9537 (Relatively Low, 84.3); tract 9536.02 (Relatively Low, 73.8); tract 9539.01 (Very Low, 65.8)

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 9536.01 is Census Tract 9536.01). 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 chill0
Frost/Freeze (outside NRI's Cold Wave definition)crop damage3 records, 2007 to 2009 (3 zone-level)No crop damage reported in 3 records.Countywide (zone-level records).
DroughtU.S. Drought Monitor scale (D0 to D4)22 records, 2000 to 2017 (22 zone-level)1 day to 225 days (median 72 days); 6 with a recorded value225 days (about 7.4 months), 2012-06-19 to 2013-01-29, a run of 8 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)192 records, 1965 to 20260.75 in to 4.5 in (median 1 in); 191 with a recorded value4.5 in hail, 2026-04-25Hail, 1994-07-17, $500 property; crops not recorded (1994 dollars)Event records naming jurisdictions in the plan: Arkadelphia city (34 records), Amity city (25 records), Gurdon city (14 records), Okolona town (11 records), Gum Springs town (7 records), Whelen Springs town (5 records), Caddo Valley town (1 record).
Excessive Heat, Heatheat index (in event narratives)11 records, 1999 to 2012 (11 zone-level)1 day to 42 days (median 8 days); 7 with a recorded value2012-06-25 to 2012-08-05 (3 records, 1 of them a monthly summary record), zone-levelCountywide (zone-level records).
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson6 records, 2005 to 2020 (6 zone-level)Strongest recorded: Tropical Storm record, 2008-09-13 to 2008-09-14, $750,000 property; $0 crops (2008 dollars); NWS zone ARZ053Most damaging recorded: Tropical Depression, 2012-08-30, $1,000,000 property; crops not reported (zone total, 2012 dollars)Countywide (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)7 records, 1998 to 2023 (7 zone-level)Ice Storm, 2015-02-16, $75,000 property; $0 crops (2015 dollars); NWS zone ARZ053Countywide (zone-level records).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)137 records, 1996 to 2025Flood, 2009-12-24, $1,250,000 property; $0 crops (2009 dollars), 2 direct injuriesEvent records naming jurisdictions in the plan: Arkadelphia city (64 records), Amity city (10 records), Gurdon city (9 records), Gum Springs town (8 records), Okolona town (2 records), Whelen Springs town (1 record).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)11 records, 1997 to 2013Lightning, 1997-07-23, damage not reported, 1 direct death, 2 direct injuriesLightning, 2008-07-22, $200,000 property; $0 crops (2008 dollars)Event records naming jurisdictions in the plan: Arkadelphia city (4 records), Amity city (1 record), Gum Springs town (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)8 records, 1997 to 2013 (8 zone-level)30 kt (35 mph) to 45 kt (52 mph) (median 36 kt (41 mph)); 8 with a recorded value45 kt (52 mph) measured gust, Strong Wind, 2008-01-29; NWS zone ARZ053Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)260 records, 1957 to 202639 kt (45 mph) to 61 kt (70 mph) (median 50 kt (58 mph)); 202 with a recorded value61 kt (70 mph) estimated gust, Thunderstorm Wind, 2022-04-16; same speed and measurement basis also recorded on 2009-07-13, 2011-08-07, 2012-08-05, 2012-08-06, 2013-07-10, 2014-04-03, 2017-07-01, 2020-04-28, 2020-05-16, 2020-06-05, 2021-12-10Thunderstorm Wind, 2013-07-10, $400,000 property; $0 crops (2013 dollars)Event records naming jurisdictions in the plan: Arkadelphia city (57 records), Gurdon city (28 records), Amity city (17 records), Okolona town (13 records), Gum Springs town (7 records), Whelen Springs town (6 records).
TornadoEnhanced Fujita (Fujita before Feb 2007)34 records, 1950 to 2025F/EF0 to F/EF4 (median F/EF1); 34 with a recorded valueF4 tornado, 1997-03-01, 27 mi within this county, 1,056 yd wide, $120,000,000 property; crops not reported (1997 dollars), 6 direct deaths, 100 direct injuriesEvent records naming jurisdictions in the plan: Amity city (4 records), Arkadelphia city (3 records), Okolona town (2 records), Whelen Springs town (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)8 records, 2010 to 2012 (8 zone-level)No damage reported in 8 records.Countywide (zone-level records).
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)44 records, 1997 to 2026 (44 zone-level)Winter Storm, 2012-12-25, $1,000,000 property; $0 crops (2012 dollars); NWS zone ARZ053Countywide (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.

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: 24 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
2026-01-242026-01-23EM-3636-AREmergencySevere Winter StormWinter Weatherno Public Assistance recordednew since last plan; within last 5 years
2025-05-212025-04-02DR-4873-ARMajor disasterSevere Storms, Tornadoes, and FloodingInland Flooding (primary); also designated: Tornado$1,405,291.65in the 12 months before plan approval; within last 5 years
2025-04-052025-04-02EM-3627-AREmergencySevere Storms, Tornadoes, and FloodingInland Flooding; Tornadono Public Assistance recordedin the 12 months before plan approval; within last 5 yearssame incident as DR-4873
2020-08-272020-08-26EM-3541-AREmergencyHurricane LauraHurricaneno Public Assistance recorded
2020-04-032020-01-20DR-4518-ARMajor disasterCOVID-19 PandemicNon-natural, not counted$25,050.20
2020-03-132020-01-20EM-3461-AREmergencyCOVID-19Non-natural, not countedno Public Assistance recordedsame incident as DR-4518
2015-06-262015-05-07DR-4226-ARMajor disasterSevere Storms, Tornadoes, Straight-Line Winds, and FloodingInland Flooding; Strong Wind; Tornado$107,024.45
2013-01-292012-12-25DR-4100-ARMajor disasterSevere Winter StormIce Stormno Public Assistance recorded
2011-05-022011-04-14DR-1975-ARMajor disasterSevere Storms, Tornadoes, and Associated FloodingInland Flooding; Tornadono Public Assistance recorded
2010-02-042009-12-23DR-1872-ARMajor disasterSevere Storms and FloodingInland Flooding$336,489.04
2009-06-162009-04-27DR-1845-ARMajor disasterSevere Storms, Tornadoes, and FloodingInland Flooding; Tornado$171,321.22
2008-10-222008-09-13DR-1804-ARMajor disasterTropical Storm IkeHurricaneno Public Assistance recorded
2008-09-182008-09-02DR-1793-ARMajor disasterSevere Storms and Flooding Associated with Hurricane GustavHurricane (primary); also designated: Inland Flooding$88,965.31
2008-03-262008-03-18DR-1751-ARMajor disasterSevere Storms, Tornadoes, and FloodingInland Flooding; Tornado$158,089.98
2005-09-022005-08-29EM-3215-AREmergencyHurricane Katrina EvacuationHurricane: evacuation support, not a local hazard event; not counted$4,210.53
2004-06-302004-05-30DR-1528-ARMajor disasterSevere Storms and FloodingInland Flooding$43,447.30
2001-03-132001-02-14DR-1363-ARMajor disasterSevere Storms and FloodingInland Flooding$188,778.37
2000-12-292000-12-12DR-1354-ARMajor disasterSevere Winter Ice StormIce Storm (primary); also designated: Cold Wave$3,670,639.51
2000-12-282000-12-12EM-3159-AREmergencySevere Winter Ice StormIce Stormno Public Assistance recordedsame incident as DR-1354
1997-03-021997-03-01DR-1162-ARMajor disasterSevere Storms and TornadoesTornadono Public Assistance recorded
1992-07-241992-06-14DR-950-ARMajor disasterSevere ThunderstormsHazard not mapped (severe storm title names no single hazard); not countedno Public Assistance recorded
1990-05-151990-05-01DR-865-ARMajor disasterSevere Storms & FloodingInland Floodingno Public Assistance recorded
1988-11-231988-11-15DR-817-ARMajor disasterSevere Storms & TornadoesTornadoPA not declared for this county
1973-04-271973-04-27DR-375-ARMajor disasterSevere Storms & FloodingInland Floodingno Public Assistance recorded

School districts and special districts in this county: $15,098.96 (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
1964-03-201964-03-20DR-166-ARMajor disasterSevere Storms & FloodingInland Flooding
1963-08-021963-08-02DR-157-ARMajor disasterHeavy Rains & FloodingInland Flooding
1961-05-161961-05-16DR-112-ARMajor disasterFloods & TornadoesInland Flooding (primary); also designated: Tornado
1960-05-281960-05-28DR-102-ARMajor disasterTornadoes & FloodsTornado (primary); also designated: Inland Flooding
1958-05-151958-05-15DR-83-ARMajor disasterHeavy Rainstorms & FloodsInland Flooding
1957-05-291957-05-29DR-77-ARMajor disasterTornadoes, Rain, Hail & FloodsTornado (primary); also designated: Hail, 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.

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 Wave3000101996 to 2026-06-30Includes 3 Frost/Freeze records.
Drought22000001996 to 2026-06-30
Earthquake000000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail1927116001955 to 2026-06-30
Heat Wave11000001996 to 2026-06-30
Hurricane6000301996 to 2026-06-30Includes 3 Tropical Depression records.
Ice Storm7002201996 to 2026-06-30
Inland Flooding13707161101996 to 2026-06-30
Landslide0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Lightning11000001996 to 2026-06-30
Strong Wind2681213101955 to 2026-06-30Includes 1 High Wind and 7 Strong Wind records.
Tornado34012701950 to 2026-06-30
Wildfire8000001996 to 2026-06-30
Winter Weather44217111996 to 2026-06-30

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2026-04-25Hail4.5 in$0 property; $0 crops (2026 dollars)0, 0ALPINEnew since last plan; within last 5 yearsB1-c worst recorded: Hail
2022-04-16Thunderstorm Wind61 kt (70 mph) estimated gust$0 property; $0 crops (2022 dollars)0, 0GRIFFITHTOWNwithin last 5 yearsB1-c worst recorded: Thunderstorm Wind
2015-02-16Ice Storm$75,000 property; $0 crops (zone total, 2015 dollars)0, 0NWS zone ARZ053 (CLARK), zone-levelB1-c worst recorded: Ice Storm
2012-12-25Winter Storm$1,000,000 property; $0 crops (zone total, 2012 dollars)0, 0NWS zone ARZ053 (CLARK), zone-levelB1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
2012-06-25Heatdamage not reported0, 0NWS zone ARZ053 (CLARK), zone-levelB1-c worst recorded: Excessive Heat, Heat
2012-06-19Droughtdamage not reported0, 0NWS zone ARZ053 (CLARK), zone-levelB1-c worst recorded: Drought
2009-12-24Flood$1,250,000 property; $0 crops (2009 dollars)0, 2AMITY to BRITTSB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2008-09-13Tropical Storm$750,000 property; $0 crops (zone total, 2008 dollars)0, 0NWS zone ARZ053 (CLARK), zone-levelB1-c worst recorded: Hurricane, Tropical Storm, Tropical Depression
2008-01-29Strong Wind45 kt (52 mph) measured gust$250,000 property; $0 crops (zone total, 2008 dollars)0, 0NWS zone ARZ053 (CLARK), zone-levelB1-c worst recorded: High Wind and Strong Wind
1999-08-08Lightningdamage not reported1, 0ALPINEdeaths or injuries recorded
1997-07-23Lightningdamage not reported1, 2GUM SPGSdeaths or injuries recorded
1997-03-01TornadoF4, 27 mi within this county, 1,056 yd wide$120,000,000 property; crops not reported (1997 dollars)6, 100OKOLONA to ARKADELPHIAdeaths or injuries recorded

The full list is in the Excel file, sheet "B1-d Storm Events history" (743 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 Wave0.737event-days per yearabout 0.737 days per yearStorm Events event-days in 0 of 30 years, 1996 to 2025 (0%)142005-11-12 to 2024-11-12 (19 years)countywideNo Storm Events cold wave record, 1996 to 2025.
Drought18.9event-days per yearabout 18.9 days per yearLikelyStorm Events event-days in 6 of 30 years, 1996 to 2025 (20%)6442000 to 2025 (25.25 years; D3 and D4 only)countywide
Earthquake0.00278annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.278%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail4.75events per yearabout 4.75 per yearHighly likelyFEMA annualized frequency (modeled)180.7 (modeled)1986 to 2023 (38 years)countywide
Heat Wave18.5event-days per yearabout 18.5 days per yearLikelyStorm Events event-days in 4 of 30 years, 1996 to 2025 (13.3%)3112005-11-12 to 2024-11-12 (19 years)countywide
Hurricane0.0321events per yearabout 1 in 31 yearsPossibleFEMA annualized frequency (modeled)121851 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 Storm0.889event-days per yearabout 0.889 days per yearLikelyStorm Events event-days in 5 of 30 years, 1996 to 2025 (16.7%)601946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding3.39event-days per yearabout 3.39 days per yearLikelyStorm Events event-days in 25 of 30 years, 1996 to 2025 (83.3%)951996 to 2023 (28 years)see B1-f
Landslide0.476events per year (modeled)about 1 in 2 yearsLikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning64.7days per year with a strikeabout 64.7 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind3.46events per yearabout 3.46 per yearHighly likelyFEMA annualized frequency (modeled)1321986 to 2023 (38 years)countywide
Tornado0.521events per yearabout 0.52 per yearLikelyFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Wildfire0.000736annual probability at a locationchance a given location in the county burns in a year: 0.0736%LikelyStorm Events records in 3 of 30 years, 1996 to 2025 (10%)not shownmodeledsee B1-f
Winter Weather3.89event-days per yearabout 3.89 days per yearLikelyStorm Events event-days in 20 of 30 years, 1996 to 2025 (66.7%)742005-11-12 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 202559301.97
Hail2.00 in+1996 to 20256300.2
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 2025188306.27
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 20250300
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 20251300.0333
TornadoEF0-11996 to 20258300.267
TornadoEF2-31996 to 20254300.133
TornadoEF4-51996 to 20251300.0333
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 Wave6 of 623.030.232.9Relatively Low 6
Drought5 of 671.289.594.6Relatively Moderate 1, Relatively Low 3, Very Low 1, No Rating 1
Earthquake6 of 670.476.182.1Relatively Moderate 2, Relatively Low 4
Hail6 of 685.190.992.8Relatively High 5, Relatively Moderate 1
Heat Wave6 of 665.185.688.7Relatively High 4, Relatively Moderate 2
Hurricane6 of 652.653.354.8Relatively Low 6
Ice Storm6 of 696.298.499.2Very High 5, Relatively High 1
Inland Flooding6 of 646.360.275.3Relatively Moderate 5, Relatively Low 1
Landslide6 of 658.377.494.2Relatively Low 2, Very Low 4
Lightning6 of 698.399.899.9Very High 6
Strong Wind6 of 685.194.595.9Relatively High 6
Tornado6 of 672.991.494.7Very High 1, Relatively High 4, Relatively Moderate 1
Wildfire6 of 639.064.584.3Relatively Low 2, Very Low 4
Winter Weather6 of 663.177.781.1Relatively High 3, Relatively Moderate 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
Clark CountyCountyApproved, expires 2030-08-26FMA RL 0, SRL 0; any 1$5,179,145.650 total; 0 since its planIncludes $25,050.20 for declarations not counted as hazard incidents (DR-4518-AR).
Amity cityCityPlan 109386 approved 2025-08-27, pending adoption here; not yet eligibleFMA RL 0, SRL 0; any 0$18,377.7657 total; no approved plan
Arkadelphia cityCityApproved, expires 2030-08-26FMA RL 0, SRL 0; any 1$752,914.13162 total; 0 since its planIncludes $4,210.53 for declarations not counted as hazard incidents (EM-3215-AR).
Caddo Valley townTownApproved, expires 2030-08-26FMA RL 0, SRL 0; any 0$16,229.521 total; 0 since its plan
Gum Springs townTownPlan 109386 approved 2025-08-27, pending adoption here; not yet eligibleFMA RL 0, SRL 0; any 0$4,77023 total; no approved plan
Gurdon cityCityApproved, expires 2030-08-26FMA RL 0, SRL 0; any 2$204,200.1151 total; 0 since its plan
Okolona townTownApproved, expires 2030-08-26FMA RL 0, SRL 0; any 0$4,176.9228 total; 1 since its plan
Whelen Springs townTownApproved, expires 2030-08-26FMA RL 0, SRL 0; any 0no Public Assistance recorded13 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).

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 2025-08-27county-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$4,116,053,103$22,530,41021,403$4,886$33$83,5550.000119%
Droughtn/a$5,059,655n/an/a$98,599n/a1.95% (agriculture)NRI has no building exposure for this hazard; agriculture shown
Earthquake$7,608,341,557n/a21,446$525,066n/a$249,8390.0069%
Hail$4,116,053,103$22,530,41021,403$451,772$12,452$32,3460.011%$0
Heat Wave$4,116,053,103$22,530,41021,403$51$113$651,737under 0.0001%
Hurricane$4,116,053,103$22,492,29221,403$50,490$9,185$2,3870.00123%
Ice Storm$4,098,588,115n/a21,253$706,936n/a$39,1640.0172%
Inland Flooding$4,113,362,335$11,322,0391,143$3,395,834$83,451$114,700n/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$66,155,730n/a427$1,719n/a$1410.0026%
Lightning$4,116,053,103n/a21,403$15,449n/a$1,076,4290.000375%
Strong Wind$4,116,053,103$22,530,41021,403$294,446$45$356,9480.00715%$0
Tornado$4,116,053,103$22,530,41021,403$712,641$872$1,181,4290.0173%
Wildfire$373,717,694$3,932,1143,379$9,234$21$2,6130.00247%
Winter Weather$4,116,053,103$22,530,41021,403$34,994$105$3,7150.00085%no Public Assistance recorded (1 declaration)

Totals since 2025-08-27 (Storm Events through 2026-06-30): 8 county-coded records, 7 with a damage value recorded (including $0), $0; 2 zone-level records, 0 with a damage value recorded (including $0), $0 reported for the zone; Public Assistance: none recorded on the 1 counted declaration.

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
Population21,403
Building value (total, not at risk)$4,116,053,103
Agriculture value (total, not at risk)$22,530,410
NRI risk rating (all hazards)Very Low
Expected annual loss, buildings and agriculture, all hazards$6,408,393
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)$3,795,003
Social vulnerability ratingRelatively High
Community resilience ratingRelatively Low
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)0Severe repetitive loss, FMA definition (44 CFR 77.2)0
Repetitive loss, NFIP insurance definition4Severe repetitive loss, NFIP insurance definition0

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 total0040401
of which: Arkadelphia city0010100
of which: Gurdon city0020200
of which: Clark County (unincorporated area)0010101
Statewide, no county in FEMA's file0030300

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
Clark County0504220010101
Amity city0503030000000
Arkadelphia city0500290010100
Caddo Valley town0505670000000
Gum Springs town0502490000000
Gurdon city0502390020200
Okolona town0502720000000
Whelen Springs town0501390000000

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 residential0030301
2 to 4 unit residential0000000
other residential0000000
non-residential0010100
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 4 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). Clark County, AR: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 05019). Automated baseline. https://hazardplain.org/ar/05019/ 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]