Hazard Plain Automated baseline

Marion County, WV

Risk-assessment baseline packet

County FIPS:
54049
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 2029-08-12. Plan: RPDC 06 Hazard Mitigation Plan (FEMA plan 109811), approved 2024-08-13.

Since the plan was approved on 2024-08-13: 2 new hazard declarations (2 incidents) and 100 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 ($26,690,407 a year), Tornado ($529,801) and Hail ($516,299).

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 2029-08-12
Plan:
RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)
Approved:
2024-08-13
Days to expiry:
1,047

What changed since your last plan (approved 2024-08-13)

New federal declarations:
2 new hazard declarations (2 incidents): DR-4884-WV (Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides), EM-3639-WV (Severe Winter Storm)
Storm Events records since approval:
100 records (data through 2026-06-30)
Repetitive loss now:
FMA RL 1, SRL 4 (44 CFR 77.2); any definition: 23
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 expiryNotes
Marion CountyCountyApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-09-18
Barrackville townTownApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-09-03
Fairmont cityCityApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-08-27
Fairview townTownApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-09-10
Farmington townTownApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-08-14
Grant Town townTownApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-08-19
Mannington cityCityApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-08-12
Monongah townTownApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-09-23
Pleasant Valley cityCityApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-08-20
Rivesville townTownApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-09-03
White Hall townTownApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-08-12
Worthington townTownApproved, expires 2029-08-12RPDC 06 Hazard Mitigation Plan (FEMA plan 109811)2024-08-132029-08-121,047this jurisdiction approved 2024-08-20

Plan 109811 covers 33 other participants, named in the Excel file.

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$25,946,696$7,209$736,502$26,690,407136
2TornadoRelatively LowRelatively Low$264,035$43$265,723$529,8014
3HailRelatively LowRelatively Low$480,089$233$35,977$516,29935
4Strong WindRelatively LowRelatively Low$107,798$361$400,013$508,172179Includes 13 High Wind and 5 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
5LightningRelatively ModerateRelatively Moderate$27,215n/a$391,999$419,2140No recorded events in Storm Events since 1996 (data through 2026-06-30).
6Heat WaveVery LowRelatively Low$128$2$203,056$203,1860No recorded events in Storm Events since 1996 (data through 2026-06-30).
7HurricaneRelatively LowRelatively Low$171,855$1,327$8,036$181,2190Declared 1 time; no Storm Events record of this type.
8Cold WaveVery LowRelatively Low$7,292$568$166,251$174,1115
9EarthquakeVery LowVery Low$132,008n/a$36,778$168,786Storm Events does not record earthquakes.
10Ice StormRelatively LowRelatively Low$49,253n/a$6,579$55,8313
11Winter WeatherRelatively LowRelatively Low$47,249under $1$4,456$51,70652
12LandslideRelatively LowRelatively Low$7,169n/a$27,472$34,6414
13DroughtVery LowVery Lown/a$15,468n/a$15,4686
14WildfireVery LowVery Low$12,128$4$2,038$14,1690No recorded events in Storm Events since 1996 (data through 2026-06-30).
15AvalancheVery LowVery Low$0n/a$17$170No 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 lightning and wildfire 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: 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
Avalanchetract 210.02 (Very Low, 5.4)
Earthquaketract 207 (Very Low, 37.2); tract 201 (Very Low, 31.1); tract 217 (Very Low, 30.0)
Hurricanetract 207 (Relatively Low, 55.1); tract 212.01 (Relatively Low, 54.5); tract 209 (Relatively Low, 54.1)
Landslidetract 218 (Relatively Moderate, 98.7); tract 215 (Relatively Moderate, 96.2); tract 210.01 (Relatively Moderate, 95.8)
Tornadotract 207 (Relatively Low, 42.1); tract 215 (Relatively Low, 42.0); tract 209 (Relatively Low, 41.2)
Wildfiretract 210.01 (Relatively Low, 73.6); tract 218 (Relatively Low, 73.3); tract 212.02 (Relatively Low, 73.0)

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 210.02 is Census Tract 210.02). 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
Avalanchenone (count and damage only)0
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill5 records, 2014 to 2025 (5 zone-level)2 days to 3 days (median 3 days); 5 with a recorded value3 consecutive days, 2025-01-20 to 2025-01-22, zone-levelCountywide (zone-level records).
Frost/Freeze (outside NRI's Cold Wave definition)crop damage0
DroughtU.S. Drought Monitor scale (D0 to D4)6 records, 1999 to 2024 (6 zone-level)61 days to 103 days (median 82 days); 2 with a recorded value103 days (about 3.4 months), 2024-08-20 to 2024-11-30, a run of 4 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)44 records, 1970 to 20260.75 in to 2 in (median 1 in); 44 with a recorded value2 in hail, 1975-07-10Event records naming jurisdictions in the plan: Fairmont city (8 records), Barrackville town (1 record), Farmington town (1 record), Grant Town town (1 record), Mannington city (1 record), Monongah town (1 record), Rivesville town (1 record), Worthington town (1 record).
Excessive Heat, Heatheat index (in event narratives)0
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson0Storm 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)3 records, 2003 to 2009 (3 zone-level)No damage reported in 3 records.Countywide (zone-level records).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)136 records, 1996 to 2025 (6 zone-level)Flash Flood, 1998-06-28, $5,000,000 property; crops not reported (1998 dollars)Event records naming jurisdictions in the plan: Fairmont city (19 records), Mannington city (10 records), Barrackville town (6 records), Farmington town (5 records), Worthington town (4 records), Fairview town (3 records), Grant Town town (1 record). Zone-level records (6) 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)4 records, 2025No damage reported in 4 records.Event records naming jurisdictions in the plan: Farmington town (1 record).
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)0Storm Events lists lightning with damage or casualties.
High Wind and Strong Wind (outside NRI's Strong Wind definition)wind speed (kt and mph)18 records, 1997 to 2024 (18 zone-level)39 kt (45 mph) to 60 kt (69 mph) (median 50 kt (58 mph)); 15 with a recorded value60 kt (69 mph), measurement type not recorded, High Wind, 1999-01-18; NWS zone WVZ021High Wind, 2009-02-11, $75,000 property; $0 crops (zone total, 2009 dollars)Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)189 records, 1970 to 202648 kt (55 mph) to 65 kt (75 mph) (median 50 kt (58 mph)); 143 with a recorded value65 kt (75 mph) estimated gust, Thunderstorm Wind, 2024-12-31Thunderstorm Wind, 2007-09-26, $100,000 property; $0 crops (2007 dollars)Event records naming jurisdictions in the plan: Fairmont city (21 records), Mannington city (12 records), Farmington town (9 records), Grant Town town (7 records), Monongah town (6 records), Barrackville town (4 records), Fairview town (4 records), Rivesville town (3 records), Worthington town (2 records).
TornadoEnhanced Fujita (Fujita before Feb 2007)8 records, 1954 to 2026F/EF0 to F/EF2 (median F/EF1); 8 with a recorded valueF2 tornado, 1981-06-21, 1 mi path length (whole path, pre-1996), 10 yd wide, $250,000 property; crops not recorded (1981 dollars)Event records naming jurisdictions in the plan: Farmington 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)0
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)52 records, 1996 to 2026 (52 zone-level)Heavy Snow, 2003-02-16, $8,000 property; crops not reported (2003 dollars); NWS zone WVZ021Countywide (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 avalanche, 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: 22 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-3639-WVEmergencySevere Winter StormWinter Weatherno Public Assistance recordednew since last plan; within last 5 years
2025-07-222025-06-14DR-4884-WVMajor disasterSevere Storms, Straight-Line Winds, Flooding, Landslides, and MudslidesInland Flooding (primary); also designated: Landslide, Strong Wind$1,748,124.12new since last plan; within last 5 years
2020-04-032020-01-20DR-4517-WVMajor disasterCOVID-19 PandemicNon-natural, not counted$49,509.12
2020-03-132020-01-20EM-3450-WVEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedsame incident as DR-4517
2017-08-182017-07-28DR-4331-WVMajor disasterSevere Storms, Flooding, Landslides, and MudslidesInland Flooding; Landslide$365,621.09
2012-10-292012-10-29EM-3358-WVEmergencyHurricane SandyHurricaneno Public Assistance recorded
2012-06-302012-06-29EM-3345-WVEmergencySevere StormsHazard not mapped (severe storm title names no single hazard); not countedno Public Assistance recorded
2012-03-162012-02-29DR-4059-WVMajor disasterSevere Storms, Tornadoes, Flooding, Mudslides, and LandslidesInland Flooding; Landslide; Tornado$118,628.57
2010-04-232010-02-05DR-1903-WVMajor disasterSevere Winter Storms and SnowstormsWinter Weather$74,869.47
2008-06-192008-06-03DR-1769-WVMajor disasterSevere Storms, Tornadoes, Flooding, Mudslides, andInland Flooding; Landslide; Tornado$225,933.46
2005-09-052005-08-29EM-3221-WVEmergencyHurricane Katrina EvacuationHurricane: evacuation support, not a local hazard event; not countedno Public Assistance recorded
2003-11-212003-11-11DR-1500-WVMajor disasterSevere Storms, Flooding, and LandslidesInland Flooding; Landslide$105,531.37
2003-06-212003-06-11DR-1474-WVMajor disasterSevere Storms, Flooding, and LandslidesInland Flooding; LandslidePA not declared for this county
2003-03-142003-02-16DR-1455-WVMajor disasterSevere Winter Storm, Record/Near Record Snow, Heavy Rains, Flooding and LandslidesInland Flooding; Landslide; Winter Weather$29,224.02
2001-06-032001-05-15DR-1378-WVMajor disasterSevere Storms, Flooding and LandslidesInland Flooding; LandslidePA not declared for this county
2000-02-282000-02-18DR-1319-WVMajor disasterFlooding, Severe Storms, and LandslidesInland Flooding (primary); also designated: Landslide$93,351.26
1998-07-011998-06-26DR-1229-WVMajor disasterSevere Storms and FloodingInland Flooding; Winter Weatherno Public Assistance recorded
1996-01-131996-01-06DR-1084-WVMajor disasterBlizzard of 96 (Severe Snow Storm)Winter Weatherno Public Assistance recorded
1993-03-171993-03-13EM-3109-WVEmergencySevere Snowfall & Winter StormWinter Weatherno Public Assistance recorded
1985-11-071985-11-03DR-753-WVMajor disasterSevere Storms & FloodingInland Floodingno Public Assistance recorded
1980-08-151980-08-15DR-628-WVMajor disasterSevere Storms & FloodingInland Floodingno Public Assistance recorded
1967-03-131967-03-13DR-224-WVMajor disasterFloodingInland 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
1964-03-201964-03-20DR-165-WVMajor disasterSevere Storms & FloodingInland Flooding
1963-03-131963-03-13DR-147-WVMajor disasterSevere Storms & FloodingInland Flooding
1962-03-091962-03-09DR-125-WVMajor disasterSevere Storm, High Tides & FloodingInland Flooding (primary); also designated: Coastal Flooding
1961-07-231961-07-23DR-117-WVMajor disasterFloodsInland Flooding
1957-01-311957-01-31DR-67-WVMajor disasterFloodInland Flooding
1954-08-041954-08-04DR-21-WVMajor disasterFloodInland 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
Avalanche0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Cold Wave5102001996 to 2026-06-30
Drought6404001996 to 2026-06-30
Earthquake000000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail44214001955 to 2026-06-30
Heat Wave0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Hurricane0000101996 to 2026-06-30No Storm Events records of this type; 1 federal declared incident (see declarations table)
Ice Storm3000001996 to 2026-06-30
Inland Flooding1364211571311996 to 2026-06-30
Landslide4404911996 to 2026-06-30
Lightning0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Strong Wind207391263111955 to 2026-06-30Includes 13 High Wind and 5 Strong Wind records.
Tornado8101201950 to 2026-06-30
Wildfire0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Winter Weather527518611996 to 2026-06-30

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2025-01-20Cold/Wind Chill$0 property; $0 crops (zone total, 2025 dollars)0, 0NWS zone WVZ021 (MARION), zone-levelnew since last plan; within last 5 yearsB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2024-12-31Thunderstorm Wind65 kt (75 mph) estimated gust$0 property; $0 crops (2024 dollars)0, 0MONTANAnew since last plan; within last 5 yearsB1-c worst recorded: Thunderstorm Wind
2024-08-20Drought$0 property; crops not reported (zone total, 2024 dollars)0, 0NWS zone WVZ021 (MARION), zone-levelnew since last plan; within last 5 yearsB1-c worst recorded: Drought
2012-06-29Thunderstorm Wind60 kt (69 mph) estimated gust$0 property; $0 crops (2012 dollars)0, 1BETHLEHEMdeaths or injuries recorded
2009-02-11High Wind50 kt (58 mph) estimated gust$75,000 property; $0 crops (zone total, 2009 dollars)0, 0NWS zone WVZ021 (MARION), zone-levelB1-c most damaging: High Wind and Strong Wind
2004-05-25Thunderstorm Wind52 kt (60 mph) estimated gust$15,000 property; crops not reported (2004 dollars)1, 0FARMINGTONdeaths or injuries recorded
2003-06-14Flash Flooddamage not reported1, 0COLFAXdeaths or injuries recorded
2003-02-16Heavy Snow$8,000 property; crops not reported (zone total, 2003 dollars)0, 0NWS zone WVZ021 (MARION), zone-levelB1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
1999-01-18High Wind60 kt (69 mph), measurement type not recorded$15,000 property; crops not reported (zone total, 1999 dollars)0, 0NWS zone WVZ021 (MARION), zone-levelB1-c worst recorded: High Wind and Strong Wind
1998-06-28Flash Flood$5,000,000 property; crops not reported (1998 dollars)0, 0COUNTYWIDEB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
1981-06-21TornadoF2, 1 mi path length (whole path, pre-1996), 10 yd wide$250,000 property; crops not recorded (1981 dollars)0, 0location not recordedB1-c worst recorded: Tornado
1975-07-10Hail2 indamage not recorded (pre-1996 record)0, 0location not recordedB1-c worst recorded: Hail

The full list is in the Excel file, sheet "B1-d Storm Events history" (465 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).

FEMA's declaration data list no tribal or special-area declarations for this state.

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
Avalanche0.01events per yearabout 1 in 100 yearsPossibleFEMA annualized frequency (modeled)01994 to 2023 (30 years)see B1-f0.01 is NRI's minimum avalanche frequency for a county in an avalanche susceptibility zone; NRI records no avalanche here, so the descriptor reflects the floor, not local events.
Cold Wave2.53event-days per yearabout 2.53 days per yearLikelyStorm Events event-days in 4 of 30 years, 1996 to 2025 (13.3%)482005-11-12 to 2024-11-12 (19 years)countywide
Drought2.58event-days per yearabout 2.58 days per yearPossibleStorm Events event-days in 2 of 30 years, 1996 to 2025 (6.67%)912000 to 2025 (25.25 years; D3 and D4 only)countywide
Earthquake0.000606annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.0606%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail2.11events per yearabout 2.11 per yearHighly likelyFEMA annualized frequency (modeled)80.0 (modeled)1986 to 2023 (38 years)countywide
Heat Wave2.21event-days per yearabout 2.21 days per yearStorm Events event-days in 0 of 30 years, 1996 to 2025 (0%)412005-11-12 to 2024-11-12 (19 years)countywideNo Storm Events heat wave record, 1996 to 2025
Hurricane0.023events per yearabout 1 in 43 yearsPossibleFEMA annualized frequency (modeled)61851 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 Storm0.199event-days per yearabout 0.199 days per yearLikelyStorm Events event-days in 3 of 30 years, 1996 to 2025 (10%)141946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding2.36event-days per yearabout 2.36 days per yearHighly likelyStorm Events event-days in 27 of 30 years, 1996 to 2025 (90%)661996 to 2023 (28 years)see B1-f
Landslide0.804events per year (modeled)about 0.8 per yearLikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning44.6days per year with a strikeabout 44.6 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind1.27events per yearabout 1.27 per yearHighly likelyFEMA annualized frequency (modeled)491986 to 2023 (38 years)countywide
Tornado0.0473events per yearabout 1 in 21 yearsPossibleFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Wildfire0.0000736annual probability at a locationchance a given location in the county burns in a year: 0.00736%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 Weather9.27event-days per yearabout 9.27 days per yearLikelyStorm Events event-days in 21 of 30 years, 1996 to 2025 (70%)1762005-11-12 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 202514300.467
Hail2.00 in+1996 to 20250300
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 2025130304.33
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 20251300.0333
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 202520300.667
TornadoEF0-11996 to 20253300.1
TornadoEF2-31996 to 20250300
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
Avalanche1 of 215.45.45.4Very Low 1, Not Applicable 20
Cold Wave21 of 2120.222.727.7Relatively Low 21
Drought1 of 2190.890.890.8Relatively Low 1, No Rating 20
Earthquake21 of 2111.224.237.2Very Low 21
Hail21 of 2155.871.481.0Relatively Moderate 13, Relatively Low 8
Heat Wave21 of 216.212.025.6Relatively Low 5, Very Low 16
Hurricane21 of 2144.250.855.1Relatively Low 10, Very Low 11
Ice Storm21 of 2114.131.649.3Relatively Low 9, Very Low 12
Inland Flooding21 of 2128.586.198.9Very High 4, Relatively High 8, Relatively Moderate 6, Relatively Low 3
Landslide21 of 2150.090.598.7Relatively Moderate 3, Relatively Low 13, Very Low 5
Lightning21 of 2147.666.384.4Relatively High 4, Relatively Moderate 15, Relatively Low 2
Strong Wind21 of 2141.858.975.1Relatively Moderate 15, Relatively Low 6
Tornado21 of 2124.833.742.1Relatively Low 18, Very Low 3
Wildfire21 of 2120.958.573.6Relatively Low 5, Very Low 16
Winter Weather21 of 2131.847.762.6Relatively Moderate 10, Relatively Low 11

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
Marion CountyCountyApproved, expires 2029-08-12FMA RL 1, SRL 3; any 13$475,870.320 total; 0 since its planIncludes $49,509.12 for declarations not counted as hazard incidents (DR-4517-WV).
Barrackville townTownApproved, expires 2029-08-12FMA RL 0, SRL 0; any 0$896.2511 total; 4 since its plan
Fairmont cityCityApproved, expires 2029-08-12FMA RL 0, SRL 1; any 4$583,369.1148 total; 2 since its plan
Fairview townTownApproved, expires 2029-08-12FMA RL 0, SRL 0; any 0$7,599.787 total; 0 since its plan
Farmington townTownApproved, expires 2029-08-12FMA RL 0, SRL 0; any 1$30,260.6717 total; 2 since its plan
Grant Town townTownApproved, expires 2029-08-12FMA RL 0, SRL 0; any 0$74,451.329 total; 0 since its plan
Mannington cityCityApproved, expires 2029-08-12FMA RL 0, SRL 0; any 2$102,594.6223 total; 1 since its plan
Monongah townTownApproved, expires 2029-08-12FMA RL 0, SRL 0; any 0$60,259.707 total; 1 since its plan
Pleasant Valley cityCityApproved, expires 2029-08-12FMA RL 0, SRL 0; any 1no Public Assistance recorded0 total; 0 since its plan
Rivesville townTownApproved, expires 2029-08-12FMA RL 0, SRL 0; any 0$2,541.204 total; 0 since its plan
White Hall townTownApproved, expires 2029-08-12FMA RL 0, SRL 0; any 0no Public Assistance recorded0 total; 0 since its plan
Worthington townTownApproved, expires 2029-08-12FMA RL 0, SRL 0; any 2$32,515.657 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 2024-08-13county-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
Avalanche$0n/aunder 1$0n/a$17building exposure is 0 in NRI
Cold Wave$13,309,742,997$3,243,03656,158$7,292$568$166,251under 0.0001%$0
Droughtn/a$1,177,493n/an/a$15,468n/a1.31% (agriculture)$0NRI has no building exposure for this hazard; agriculture shown
Earthquake$23,399,709,373n/a56,205$132,008n/a$36,7780.000564%
Hail$13,309,742,997$3,243,03656,158$480,089$233$35,9770.00361%$0
Heat Wave$13,309,742,997$3,243,03656,158$128$2$203,056under 0.0001%
Hurricane$13,309,742,997$3,241,37456,158$171,855$1,327$8,0360.00129%
Ice Storm$13,049,721,111n/a55,184$49,253n/a$6,5790.000377%
Inland Flooding$13,287,045,521$407,2562,287$25,946,696$7,209$736,502n/a (see note)$1,210,000$1,748,124.12NRI 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$2,942,720,668n/a14,135$7,169n/a$27,4720.000244%$0$1,748,124.12
Lightning$13,309,742,997n/a56,158$27,215n/a$391,9990.000204%
Strong Wind$13,309,742,997$3,243,03656,158$107,798$361$400,0130.00081%$198,000$1,748,124.12
Tornado$13,309,742,997$3,243,03656,158$264,035$43$265,7230.00198%$24,000
Wildfire$5,762,333,775$2,875,69026,595$12,128$4$2,0380.00021%
Winter Weather$13,309,742,997$3,243,03656,158$47,249under $1$4,4560.000355%$0no Public Assistance recorded (1 declaration)

Totals since 2024-08-13 (Storm Events through 2026-06-30): 88 county-coded records, 86 with a damage value recorded (including $0), $1,432,000; 12 zone-level records, 12 with a damage value recorded (including $0), $0 reported for the zone; Public Assistance: $1,748,124.12 on 2 counted declarations, 1 of them with Public Assistance.

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
Population56,158
Building value (total, not at risk)$13,309,742,997
Agriculture value (total, not at risk)$3,243,036
NRI risk rating (all hazards)Relatively Low
Expected annual loss, buildings and agriculture, all hazards$27,278,129
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)$2,284,897
Social vulnerability ratingRelatively Moderate
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)1Severe repetitive loss, FMA definition (44 CFR 77.2)4
Repetitive loss, NFIP insurance definition23Severe repetitive loss, NFIP insurance definition4

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

Repeat-flood properties: county total and NFIP communities

Sources: 1, 4

ScopeRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
County total142342303
of which: Marion County (unincorporated area)131331301
of which: Fairmont city0141400
of which: Farmington town0010100
of which: Mannington city0020201
of which: Worthington town0020200
of which: Pleasant Valley city0010101

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

Sources: 1, 4

JurisdictionNFIP community IDRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
Marion County540097131331301
Barrackville town5400980000000
Fairmont city5400990141400
Fairview town5401000000000
Farmington town5401010010100
Grant Town town5401020000000
Mannington city5401030020201
Monongah town5401040000000
Pleasant Valley city5402920010101
Rivesville town5401050000000
White Hall town5455560000000
Worthington town5401060020200

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 residential031731702
2 to 4 unit residential0000000
other residential0000000
non-residential1161601
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 22 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). Marion County, WV: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 54049). Automated baseline. https://hazardplain.org/wv/54049/ 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