Hazard Plain Automated baseline

Sandusky County, OH

Risk-assessment baseline packet

County FIPS:
39143
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 2030-07-08. Plan: Sandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966), approved 2025-07-09.

Since the plan was approved on 2025-07-09: no new hazard declaration and 8 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 ($12,415,613 a year), Tornado ($2,762,749) and Strong Wind ($1,116,898).

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 2030-07-08
Plan:
Sandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966)
Approved:
2025-07-09
Days to expiry:
1,377

What changed since your last plan (approved 2025-07-09)

New federal declarations:
none
Storm Events records since approval:
8 records (data through 2026-06-30)
Repetitive loss now:
FMA RL 0, SRL 1 (44 CFR 77.2); any definition: 14
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
Sandusky CountyCountyApproved, expires 2030-07-08Sandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966)2025-07-092030-07-081,377
Bellevue cityCityApproved, expires 2030-07-08Sandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966)2025-07-092030-07-081,377FEMA tracker shows a plan approvable pending adoptionthis jurisdiction approved 2025-09-03
Burgoon villageVillagePlan 110966 approved 2025-07-09, pending adoption here; not yet eligibleSandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966), pending adoption here2025-07-09 by FEMA; not yet adopted here2030-07-08 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
Clyde cityCityApproved, expires 2030-07-08Sandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966)2025-07-092030-07-081,377
Fremont cityCityApproved, expires 2030-07-08Sandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966)2025-07-092030-07-081,377
Gibsonburg villageVillageApproved, expires 2030-07-08Sandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966)2025-07-092030-07-081,377
Green Springs villageVillagePlan 110966 approved 2025-07-09, pending adoption here; not yet eligibleSandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966), pending adoption here2025-07-09 by FEMA; not yet adopted here2030-07-08 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
Helena villageVillagePlan 110966 approved 2025-07-09, pending adoption here; not yet eligibleSandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966), pending adoption here2025-07-09 by FEMA; not yet adopted here2030-07-08 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.
Lindsey villageVillageApproved, expires 2030-07-08Sandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966)2025-07-092030-07-081,377this jurisdiction approved 2025-09-03
Woodville villageVillageApproved, expires 2030-07-08Sandusky County 2025 Multi-Hazard Mitigation Plan (FEMA plan 110966)2025-07-092030-07-081,377

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 LowRelatively Low$12,161,217$234,123$20,273$12,415,61351
2TornadoRelatively ModerateRelatively Moderate$1,640,735$839$1,121,175$2,762,7499
3Strong WindRelatively ModerateRelatively Moderate$591,582$73,435$451,882$1,116,898210Includes 39 High Wind and 5 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
4HailRelatively ModerateRelatively Moderate$940,771$17,657$6,112$964,53986
5Cold WaveRelatively LowRelatively Low$5,038$7,490$940,718$953,24511
6EarthquakeRelatively LowRelatively Low$431,254n/a$107,559$538,813Storm Events does not record earthquakes.
7Ice StormRelatively ModerateRelatively Moderate$442,219n/a$3,797$446,0163
8LightningRelatively LowRelatively Low$20,624n/a$265,633$286,2571
9Heat WaveVery LowRelatively Low$3,611$1$212,213$215,8252
10Winter WeatherRelatively ModerateRelatively Moderate$152,483$390$49,200$202,07235
11HurricaneVery LowVery Low$33,848$12,392$433$46,6720No recorded events in Storm Events since 1996 (data through 2026-06-30).
12Coastal FloodingVery LowVery Low$5,814n/a$522$6,3364
13WildfireVery LowVery Low$1,970$1$155$2,1260No recorded events in Storm Events since 1996 (data through 2026-06-30).
14LandslideVery LowVery Low$65n/a$335$4000No recorded events in Storm Events since 1996 (data through 2026-06-30).
15DroughtNo RatingNo Expected Annual Lossesn/a$0n/a$05
TsunamiInsufficient DataInsufficient Datan/an/an/an/a0No recorded events in Storm Events since 1996 (data through 2026-06-30).

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

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

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

Not applicable to this county per NRI, with no federal declaration and no Storm Events record since 1996: avalanche 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.

Coastal Flooding and 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 9616 (Relatively Low, 68.4); tract 9620 (Relatively Low, 65.2); tract 9608 (Relatively Low, 59.6)
Hurricanetract 9621 (Very Low, 48.0); tract 9608 (Very Low, 46.4); tract 9612 (Very Low, 46.2)
Landslidetract 9608 (Very Low, 80.2); tract 9621 (Very Low, 78.3); tract 9609 (Very Low, 75.0)
Tornadotract 9620 (Relatively High, 86.7); tract 9616 (Relatively High, 82.5); tract 9621 (Relatively High, 79.8)
Tsunamino tract has a National Risk Index rating for this hazard
Wildfiretract 9608 (Very Low, 51.0); tract 9621 (Very Low, 50.6); tract 9620 (Very Low, 47.1)

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 9616 is Census Tract 9616). 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
Coastal Flood, Storm Surge/Tidenone in data (flood depth: FIRM)4 records, 1997 to 1998Storm Surge/Tide, 1998-04-09, $500,000 property; crops not reported (1998 dollars)No event record names a jurisdiction in the plan.Flood depth: see the FEMA Flood Insurance Rate Map.
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill11 records, 1996 to 2022 (11 zone-level)1 day to 10 days (median 2 days); 11 with a recorded value10 consecutive days, 1997-01-10 to 1997-01-19, zone-levelExtreme Cold/Wind Chill, 2012-04-29, $100,000 property; $0 crops (zone total, 2012 dollars)Countywide (zone-level records).
Frost/Freeze (outside NRI's Cold Wave definition)crop damage0
DroughtU.S. Drought Monitor scale (D0 to D4)5 records, 1996 to 1999 (5 zone-level)31 days to 122 days (median 76.5 days); 2 with a recorded value122 days (4 months), 1999-06-01 to 1999-09-30, a run of 4 consecutive Storm Events drought records, zone-levelDrought, 1999-09-01, property not reported; $8,000,000 crops (zone total, 1999 dollars)Countywide (zone-level records).Storm Events enters a drought at D2 or worse east of the Rockies and D3 or worse from the Rockies west (NWS Instruction 10-1605); NRI drought counts D3 and D4 only.
EarthquakeModified Mercalli (local data)0Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hailhail size (inches)106 records, 1967 to 20210.75 in to 3 in (median 0.81 in); 106 with a recorded value3 in hail, 1974-04-14Hail, 2011-05-25, $1,000,000 property; $0 crops (2011 dollars)Event records naming jurisdictions in the plan: Fremont city (19 records), Clyde city (16 records), Gibsonburg village (11 records), Bellevue city (10 records), Woodville village (8 records), Lindsey village (5 records), Helena village (3 records), Green Springs village (2 records), Burgoon village (1 record).
Excessive Heat, Heatheat index (in event narratives)2 records, 1999 (2 zone-level)7 days to 31 days (median 19 days); 2 with a recorded valueJuly 1999 (1 monthly summary record), zone-levelCountywide (zone-level records).
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, 2002 to 2025 (3 zone-level)Ice Storm, 2005-01-05, $1,100,000 property; crops not reported (2005 dollars); NWS zone OHZ008Countywide (zone-level records).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)51 records, 1996 to 2026 (25 zone-level)Flood, 2006-06-22, $2,500,000 property; $5,000,000 crops (2006 dollars)Event records naming jurisdictions in the plan: Bellevue city (4 records), Woodville village (4 records), Fremont city (2 records), Lindsey village (2 records), Gibsonburg village (1 record), Green Springs village (1 record). Zone-level records (25) 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)0
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)1 record, 1997Lightning, 1997-07-18, $3,000 property; crops not reported (1997 dollars)Event records naming jurisdictions in the plan: Bellevue city (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)44 records, 1996 to 2021 (44 zone-level)35 kt (40 mph) to 60 kt (69 mph) (median 50 kt (58 mph)); 33 with a recorded value60 kt (69 mph) estimated gust, High Wind, 2009-12-09; same speed and measurement basis also recorded on 2008-01-30; NWS zone OHZ008High Wind, 2008-09-14, $2,500,000 property; $750,000 crops (zone total, 2008 dollars)Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)221 records, 1958 to 202645 kt (52 mph) to 87 kt (100 mph) (median 50 kt (58 mph)); 144 with a recorded value87 kt (100 mph) estimated gust, Thunderstorm Wind, 2006-05-25Thunderstorm Wind, 2013-07-10, $3,400,000 property; $0 crops (2013 dollars)Event records naming jurisdictions in the plan: Fremont city (52 records), Clyde city (28 records), Woodville village (14 records), Gibsonburg village (13 records), Bellevue city (11 records), Lindsey village (8 records), Green Springs village (4 records), Helena village (2 records), Burgoon village (1 record).
TornadoEnhanced Fujita (Fujita before Feb 2007)13 records, 1953 to 2023F/EF0 to F/EF4 (median F/EF1); 13 with a recorded valueF4 tornado, 1953-06-08, 32.6 mi path length (whole path, pre-1996), 100 yd wide, damage not recorded (pre-1996 record)Tornado, 1977-06-30, $25,000,000 property; crops not recorded (1977 dollars)Event records naming jurisdictions in the plan: Bellevue city (2 records), Fremont city (1 record), Lindsey village (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).
Tsunaminone (count and damage only)0
Wildfireacres burned (local data)0
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)35 records, 1996 to 2022 (34 zone-level)Winter Storm, 2004-12-22, $1,800,000 property; crops not reported (2004 dollars); NWS zone OHZ008No event record names a jurisdiction in the plan. Zone-level records (34) apply countywide.

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, lightning and tsunami.

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: 13 declarations covering 8 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 dollarsNotes
2020-03-312020-01-20DR-4507-OHMajor disasterCOVID-19 PandemicNon-natural, not counted$1,638,068.57
2020-03-132020-01-20EM-3457-OHEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedsame incident as DR-4507
2012-06-302012-06-29EM-3346-OHEmergencySevere StormsHazard not mapped (severe storm title names no single hazard); not countedno Public Assistance recorded
2006-07-022006-06-21DR-1651-OHMajor disasterSevere Storms, Tornadoes, Straight Line Winds, and FloodingInland Flooding; Strong Wind; TornadoPA not declared for this county
2005-09-132005-08-29EM-3250-OHEmergencyHurricane Katrina EvacuationHurricane: evacuation support, not a local hazard event; not countedno Public Assistance recorded
2005-01-112004-12-22EM-3198-OHEmergencySnowWinter Weather$115,935.83
2004-09-192004-08-27DR-1556-OHMajor disasterSevere Storms and FloodingInland Flooding: designated for Hazard Mitigation only (no Public or Individual Assistance for this county); not countedPA not declared for this county
2002-11-182002-11-10DR-1444-OHMajor disasterSevere Storms and TornadoesTornadoPA not declared for this county
1998-06-301998-06-24DR-1227-OHMajor disasterSevere Storms, Flooding, and TornadoesInland Flooding; TornadoPA not declared for this county
1978-01-261978-01-26EM-3055-OHEmergencyBlizzards & SnowstormsWinter Weatherno Public Assistance recorded
1974-05-311974-05-31DR-436-OHMajor disasterSevere Storms & FloodingInland Floodingno Public Assistance recorded
1973-04-271973-04-27DR-377-OHMajor disasterSevere Storms & FloodingInland Floodingno Public Assistance recorded
1969-07-151969-07-15DR-266-OHMajor disasterTornadoes, Severe Storms & FloodingTornado (primary); also designated: Inland Floodingno Public Assistance recorded

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

Statewide declarations

Source: 2

DeclaredIncident beganFEMA numberTypeTitleMapped hazard
1964-03-241964-03-24DR-167-OHMajor disasterSevere Storms & FloodingInland Flooding
1959-01-231959-01-23DR-90-OHMajor disasterFloodsInland Flooding
1956-05-171956-05-17DR-57-OHMajor disasterWind StormOther, not an NRI hazard; not counted

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, $2,267.57

Sources: 2, 3

FEMA numberDeclaredTitleApplicantPA obligatedfederal share obligated, nominal dollars
DR-1580-OH2005-02-15Severe Winter Storms, Flooding, and MudslidesBellevue City School District$2,267.57

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.

Public Assistance not placed in any Ohio county: 1 row, $3,080,910.74; listed on the Ohio state page.

Source: 3

Previous occurrences by hazard, with explicit no-event rows

Sources: 2, 6, 7

HazardStorm Events records, all years on file(years in the Period column)Since plan approvalrecordsIn the 12 months before plan approvalrecordsLast 5 yearsrecordsDeclared incidents, all yearsseparate disastersDeclared since approvalseparate disastersPeriodStatement
Coastal Flooding4000001996 to 2026-06-30
Cold Wave11001001996 to 2026-06-30
Drought5000001996 to 2026-06-30
Earthquake000000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail106003001955 to 2026-06-30
Heat Wave2000001996 to 2026-06-30
Hurricane0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Ice Storm3011001996 to 2026-06-30
Inland Flooding51608501996 to 2026-06-30
Landslide0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Lightning1000001996 to 2026-06-30
Strong Wind2652019101955 to 2026-06-30Includes 39 High Wind and 5 Strong Wind records.
Tornado13005401950 to 2026-06-30
Tsunami0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Wildfire0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Winter Weather35002201996 to 2026-06-30

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationWhy listed
2009-12-09High Wind60 kt (69 mph) estimated gust$250,000 property; $0 crops (zone total, 2009 dollars)0, 0NWS zone OHZ008 (SANDUSKY), zone-levelB1-c worst recorded: High Wind and Strong Wind
2006-06-22Flood$2,500,000 property; $5,000,000 crops (2006 dollars)0, 0COUNTYWIDEB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2006-05-25Thunderstorm Wind87 kt (100 mph) estimated gust$350,000 property; crops not reported (2006 dollars)0, 0CLYDEB1-c worst recorded: Thunderstorm Wind
2005-01-05Ice Storm$1,100,000 property; crops not reported (zone total, 2005 dollars)0, 0NWS zone OHZ008 (SANDUSKY), zone-levelB1-c worst recorded: Ice Storm
2002-03-09High Windspeed not recorded$400,000 property; crops not reported (zone total, 2002 dollars)0, 3NWS zone OHZ008 (SANDUSKY), zone-leveldeaths or injuries recorded
1999-07-01Heatdamage not reported0, 0NWS zone OHZ008 (SANDUSKY), zone-levelB1-c worst recorded: Excessive Heat, Heat
1998-01-13Winter Weatherdamage not reported0, 3COUNTYWIDEdeaths or injuries recorded
1997-07-18Lightning$3,000 property; crops not reported (1997 dollars)0, 0BELLEVUEB1-c worst recorded: Lightning
1997-01-10Cold/Wind Chill$5,000 property; crops not reported (zone total, 1997 dollars)0, 0NWS zone OHZ008 (SANDUSKY), zone-levelB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
1977-06-30TornadoF1, 3.3 mi path length (whole path, pre-1996), 880 yd wide$25,000,000 property; crops not recorded (1977 dollars)0, 18location not recordeddeaths or injuries recorded
1974-04-14Hail3 indamage not recorded (pre-1996 record)0, 0location not recordedB1-c worst recorded: Hail
1953-06-08TornadoF4, 32.6 mi path length (whole path, pre-1996), 100 yd widedamage not recorded (pre-1996 record)0, 0location not recordedB1-c worst recorded: Tornado

The full list is in the Excel file, sheet "B1-d Storm Events history" (496 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
Coastal Flooding0.0171events per year at a location (modeled)about 0.017 per year at a given location in the countyPossibleStorm Events records in 2 of 30 years, 1996 to 2025 (6.67%)not shownmodeledsee B1-f
Cold Wave4.37event-days per yearabout 4.37 days per yearLikelyStorm Events event-days in 8 of 30 years, 1996 to 2025 (26.7%)832005-11-12 to 2024-11-12 (19 years)countywide
Drought0event-days per yearnone modeledPossibleStorm Events event-days in 2 of 30 years, 1996 to 2025 (6.67%)02000 to 2025 (25.25 years; D3 and D4 only)countywideNRI models no drought event-days here (2000 to 2025, 25.25 years; D3 and D4 only); Storm Events has a record in 2 of 30 years. The descriptor comes from Storm Events, which counts D2 drought that NRI leaves out.
Earthquake0.00116annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.116%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail3.31events per yearabout 3.31 per yearHighly likelyFEMA annualized frequency (modeled)125.6 (modeled)1986 to 2023 (38 years)countywide
Heat Wave3event-days per yearabout 3 days per yearPossibleStorm Events event-days in 1 of 30 years, 1996 to 2025 (3.33%)522005-11-12 to 2024-11-12 (19 years)countywide
Hurricane0.0169events per yearabout 1 in 59 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 Storm1.08event-days per yearabout 1.08 days per yearLikelyStorm Events event-days in 3 of 30 years, 1996 to 2025 (10%)731946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding1.39event-days per yearabout 1.39 days per yearLikelyStorm Events event-days in 16 of 30 years, 1996 to 2025 (53.3%)391996 to 2023 (28 years)see B1-f
Landslide0.0618events per year (modeled)about 1 in 16 yearsPossibleFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning38.7days per year with a strikeabout 38.7 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind3.16events per yearabout 3.16 per yearHighly likelyFEMA annualized frequency (modeled)1211986 to 2023 (38 years)countywide
Tornado0.193events per yearabout 1 in 5 yearsLikelyFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Tsunamiannual probability at the most exposed location (used in place of a county value)Storm Events records in 0 of 30 years, 1996 to 2025 (0%)not shownmodeledsee B1-fNo descriptor: no Storm Events record 1996 to 2025
Wildfire0.000012annual probability at a locationchance a given location in the county burns in a year: 0.0012%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 Weather9.11event-days per yearabout 9.11 days per yearLikelyStorm Events event-days in 20 of 30 years, 1996 to 2025 (66.7%)1732005-11-12 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 202530301
Hail2.00 in+1996 to 20251300.0333
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 2025121304.03
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 20254300.133
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 202539301.3
TornadoEF0-11996 to 20259300.3
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
Coastal Flooding3 of 1576.276.883.9Relatively Low 1, Very Low 2, No Rating 12
Cold Wave15 of 1540.653.671.5Relatively Moderate 11, Relatively Low 4
Drought0 of 15No Rating 15
Earthquake15 of 1537.250.468.4Relatively Low 14, Very Low 1
Hail15 of 1577.384.192.9Relatively High 3, Relatively Moderate 12
Heat Wave15 of 159.518.338.2Relatively Low 9, Very Low 6
Hurricane15 of 1536.543.148.0Very Low 15
Ice Storm15 of 1578.187.894.7Relatively High 4, Relatively Moderate 11
Inland Flooding15 of 1524.461.984.3Relatively High 3, Relatively Moderate 10, Relatively Low 2
Landslide15 of 1522.864.880.2Very Low 15
Lightning15 of 1546.963.584.6Relatively High 3, Relatively Moderate 11, Relatively Low 1
Strong Wind15 of 1579.484.391.9Relatively High 9, Relatively Moderate 6
Tornado15 of 1562.669.286.7Relatively High 5, Relatively Moderate 10
Tsunami0 of 15Insufficient Data 15
Wildfire14 of 1523.543.851.0Very Low 14, No Rating 1
Winter Weather15 of 1578.284.394.9Relatively High 14, Relatively Moderate 1

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, 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.

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
Sandusky CountyCountyApproved, expires 2030-07-08FMA RL 0, SRL 0; any 9$3,098.700 total; 0 since its plan
Bellevue cityCityApproved, expires 2030-07-08FMA RL 0, SRL 0; any 4no Public Assistance recorded28 total; 0 since its planWhole community, including the part in Huron County; none of its repeat-flood properties are in this county.
Burgoon villageVillagePlan 110966 approved 2025-07-09, pending adoption here; not yet eligibleFMA RL 0, SRL 0; any 0no Public Assistance recorded2 total; no approved plan
Clyde cityCityApproved, expires 2030-07-08FMA RL 0, SRL 0; any 1$10,134.5544 total; 1 since its plan
Fremont cityCityApproved, expires 2030-07-08FMA RL 0, SRL 0; any 1$19,22274 total; 0 since its plan
Gibsonburg villageVillageApproved, expires 2030-07-08FMA RL 0, SRL 0; any 0$5,935.8925 total; 0 since its plan
Green Springs villageVillagePlan 110966 approved 2025-07-09, pending adoption here; not yet eligibleFMA RL 0, SRL 0; any 0$3,170.967 total; no approved plan
Helena villageVillagePlan 110966 approved 2025-07-09, pending adoption here; not yet eligibleFMA RL 0, SRL 0; any 0no Public Assistance recorded5 total; no approved plan
Lindsey villageVillageApproved, expires 2030-07-08FMA RL 0, SRL 0; any 0$1,328.8416 total; 2 since its plan
Woodville villageVillageApproved, expires 2030-07-08FMA RL 0, SRL 1; any 3$3,644.4826 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 2025-07-09county-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
Coastal Flooding$1,005,612,355n/a2,611$5,814n/a$5220.000578%
Cold Wave$15,562,180,843$130,055,29558,813$5,038$7,490$940,718under 0.0001%
Droughtn/a$0n/an/a$0n/aagriculture exposure is 0 in NRI
Earthquake$27,957,784,082n/a58,896$431,254n/a$107,5590.00154%
Hail$15,562,180,843$130,055,29558,813$940,771$17,657$6,1120.00605%
Heat Wave$15,562,180,843$130,055,29558,813$3,611$1$212,213under 0.0001%
Hurricane$15,556,681,367$128,837,89658,793$33,848$12,392$4330.000218%
Ice Storm$15,537,614,934n/a58,678$442,219n/a$3,7970.00285%
Inland Flooding$15,546,810,643$12,084,1151,558$12,161,217$234,123$20,273n/a (see note)$0NRI 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$66,265,581n/a247$65n/a$335under 0.0001%
Lightning$15,562,180,843n/a58,813$20,624n/a$265,6330.000133%
Strong Wind$15,562,180,843$130,055,29558,813$591,582$73,435$451,8820.0038%$6,000
Tornado$15,562,180,843$130,055,29558,813$1,640,735$839$1,121,1750.0105%
Tsunamin/an/an/an/an/an/aNRI publishes no building exposure for this county
Wildfire$1,919,798,822$10,147,7937,296$1,970$1$1550.000103%
Winter Weather$15,562,180,843$130,055,29558,813$152,483$390$49,2000.00098%

Totals since 2025-07-09 (Storm Events through 2026-06-30): 8 county-coded records, 8 with a damage value recorded (including $0), $6,000; 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
Population58,813
Building value (total, not at risk)$15,562,180,843
Agriculture value (total, not at risk)$130,055,295
NRI risk rating (all hazards)Relatively Low
Expected annual loss, buildings and agriculture, all hazards$16,777,557
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)$3,180,006
Social vulnerability ratingRelatively Low
Community resilience ratingVery 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)0Severe repetitive loss, FMA definition (44 CFR 77.2)1
Repetitive loss, NFIP insurance definition13Severe 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 total011301413
of which: Sandusky County (unincorporated area)0090902
of which: Clyde city0010100
of which: Fremont city0010100
of which: Woodville village0120311
Statewide, no county in FEMA's file0010100

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 insuredpropertiesNote
Sandusky County3904860090902
Bellevue city3904870040400Whole community, including the part in Huron County; none of its repeat-flood properties are in this county.
Burgoon village3904880000000
Clyde city3904890010100
Fremont city3904900010100
Gibsonburg village3904910000000
Green Springs village3904920000000
Helena village3904930000000
Lindsey village3904940000000
Woodville village3904950120311

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 residential011201313
2 to 4 unit residential0000000
other residential0010100
non-residential0000000
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 13 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). Sandusky County, OH: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 39143). Automated baseline. https://hazardplain.org/oh/39143/ 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