Hazard Plain Automated baseline

Eastern District, AS

Risk-assessment baseline packet

County FIPS:
60010
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 2030-06-04. Plan: American Samoa state-level plan (plan 110788), approved 2025-06-05.

Since the plan was approved on 2025-06-05: no new hazard declaration and 9 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): Tsunami ($26,730,013 a year), Inland Flooding ($10,009,120) and Earthquake ($5,568,194).

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 2030-06-04
Plan:
American Samoa state-level plan (plan 110788)
Approved:
2025-06-05
Days to expiry:
1,343

Plan clock from the American Samoa state-level plan; FEMA plan data has no county-level or local plan row for this area.

What changed since your last plan (approved 2025-06-05)

New federal declarations:
none
Storm Events records since approval:
9 records (data through 2026-06-30)
Repetitive loss now:
FMA RL 0, SRL 0 (44 CFR 77.2); any definition: 0
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
No rows for this unit.

No jurisdictions listed in FEMA plan data for this unit.

Plan 110788 covers 1 other participant: American Samoa.

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
1TsunamiInsufficient DataRelatively High$12,343,296n/a$14,386,717$26,730,0138
2Inland FloodingInsufficient DataRelatively Low$9,100,683$8,847$899,590$10,009,120119
3EarthquakeInsufficient DataRelatively Moderate$1,333,889n/a$4,234,306$5,568,194Storm Events does not record earthquakes.
4HurricaneInsufficient DataRelatively Moderate$2,613,033$4,816$208,173$2,826,02212
5Coastal FloodingInsufficient DataRelatively Low$81,230n/a$430$81,6604
6Volcanic ActivityInsufficient DataRelatively Low$5,976n/a$2,428$8,4040No recorded events in Storm Events since 1996 (data through 2026-06-30).
7Cold WaveInsufficient DataNo Expected Annual Losses$0$0$0$00No recorded events in Storm Events since 1996 (data through 2026-06-30).
8Heat WaveInsufficient DataNo Expected Annual Losses$0$0$0$04
9Winter WeatherInsufficient DataNo Expected Annual Losses$0$0$0$00No recorded events in Storm Events since 1996 (data through 2026-06-30).
DroughtInsufficient DataInsufficient Datan/an/an/an/a5
HailInsufficient DataInsufficient Datan/an/an/an/a0No recorded events in Storm Events since 1996 (data through 2026-06-30).
LandslideInsufficient DataInsufficient Datan/an/an/an/a2
LightningInsufficient DataInsufficient Datan/an/an/an/a5
Strong WindInsufficient DataInsufficient Datan/an/an/an/a52Includes 23 High Wind and 24 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
TornadoInsufficient DataInsufficient Datan/an/an/an/a0No recorded events in Storm Events since 1996 (data through 2026-06-30).
WildfireInsufficient 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 volcanic activity, cold wave, winter weather, hail, tornado 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: avalanche and ice storm. 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, 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
Earthquakeno tract has a National Risk Index rating for this hazard
Hurricaneno tract has a National Risk Index rating for this hazard
Landslideno tract has a National Risk Index rating for this hazard
Tornadono tract has a National Risk Index rating for this hazard
Tsunamino tract has a National Risk Index rating for this hazard
Volcanic Activityno tract has a National Risk Index rating for this hazard
Wildfireno tract has a National Risk Index rating for this hazard

Up to 3 census tracts per hazard, highest National Risk Index rating first, then highest score; a tract number is the Census tract number. 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, 2016 to 2025 (4 zone-level)Coastal Flood, 2022-07-13, $1,900,000 property; $10,000 crops (2022 dollars); Storm Events area TUTUILA (legacy zone code ASZ002)Countywide (zone-level records).Flood depth: see the FEMA Flood Insurance Rate Map.
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill0
Frost/Freeze (outside NRI's Cold Wave definition)crop damage0
DroughtU.S. Drought Monitor scale (D0 to D4)5 records, 1998 to 2023 (5 zone-level)1 day to 31 days (median 30 days); 5 with a recorded value31 days (1 month), 1998-08-01 to 1998-08-31, zone-levelDrought, 2023-09-17, $50,000 property; $0 crops (zone total, 2023 dollars)Countywide (zone-level records).Storm Events enters a drought at D2 or worse east of the Rockies and D3 or worse from the Rockies west (NWS Instruction 10-1605); NRI drought counts D3 and D4 only.
EarthquakeModified Mercalli (local data)0Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hailhail size (inches)0
Excessive Heat, Heatheat index (in event narratives)4 records, 2016 to 2022 (4 zone-level)4 days to 6 days (median 5.5 days); 4 with a recorded value6 consecutive days, 2022-03-12 to 2022-03-17, zone-levelCountywide (zone-level records).
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson12 records, 1998 to 2018 (12 zone-level)Strongest recorded: Hurricane record (NOAA event type 'Hurricane (Typhoon)'), 2004-01-04 to 2004-01-05, $50,000,000 property; crops not reported (2004 dollars), 20 direct injuries (reported for the zone); Storm Events area TUTUILA (legacy zone code ASZ002)Most damaging recorded: Tropical Storm, 2018-02-09, $50,000,000 property; $2,000,000 crops (zone total, 2018 dollars) (as recorded; larger than this county's annual agriculture value in the National Risk Index (the county or state extension service keeps crop loss records))Countywide (zone-level records).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.
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)119 records, 1998 to 2026 (119 zone-level)Flash Flood, 2003-05-19, $50,000,000 property; $1,000,000 crops (2003 dollars), 4 direct deaths, 6 direct injuries (reported for the zone); Storm Events area TUTUILA (legacy zone code ASZ002)Countywide (zone-level records).Flood depth: see the FEMA Flood Insurance Rate Map. Storm Events damage is often $0 or blank for floods, major ones included; FEMA Public Assistance by declaration (B1-d) shows which floods cost the most.
Debris Flownone (count and damage only)2 records, 2004 to 2006 (2 zone-level)Debris Flow, 2006-01-31, $40,000 property; crops not reported (2006 dollars); Storm Events area TUTUILA (legacy zone code ASZ002)Countywide (zone-level records).
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)5 records, 2006 to 2023 (5 zone-level)Lightning, 2006-04-04, damage not reported, 1 direct death, 1 direct injury (reported for the zone); Storm Events area TUTUILA (legacy zone code ASZ002)Lightning, 2023-04-15, $100,000 property; $0 crops (zone total, 2023 dollars)Countywide (zone-level records).Storm Events lists lightning with damage or casualties.
High Wind and Strong Wind (outside NRI's Strong Wind definition)wind speed (kt and mph)47 records, 1998 to 2025 (47 zone-level)25 kt (29 mph) to 65 kt (75 mph) (median 43 kt (49 mph)); 45 with a recorded value65 kt (75 mph) measured gust, High Wind, 2020-02-20; Storm Events area TUTUILA (legacy zone code ASZ002)Strong Wind, 2013-07-02, property not reported; $4,000,000 crops (zone total, 2013 dollars) (as recorded; larger than this county's annual agriculture value in the National Risk Index (the county or state extension service keeps crop loss records))Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)5 records, 2023 to 2026 (5 zone-level)No thunderstorm wind record can stand as this county's strongest: the 5 records with a recorded speed reached this county only through an NWS zone that covers more than one county, so the wind may have occurred outside this county (zone-level); they are counted as occurrences.Thunderstorm Wind, 2024-02-03, $200,000 property; $0 crops (zone total, 2024 dollars)Countywide (zone-level records).
TornadoEnhanced Fujita (Fujita before Feb 2007)0Before 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)8 records, 2006 to 2025 (8 zone-level)Tsunami, 2009-09-29, $81,000,000 property; $20,000 crops (2009 dollars), 32 direct deaths, 129 direct injuries (reported for the zone); Storm Events area TUTUILA (legacy zone code ASZ002)Countywide (zone-level records).
Volcanic Ash, Volcanic AshfallVolcanic Explosivity Index (local data)0
Wildfireacres burned (local data)0
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)0

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

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: 16 declarations covering 13 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
2020-04-172020-01-20DR-4537-ASMajor disasterCOVID-19 PandemicNon-natural, not countedno Public Assistance recorded
2020-03-132020-01-20EM-3465-ASEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedsame incident as DR-4537
2018-03-022018-02-07DR-4357-ASMajor disasterTropical Storm GitaHurricaneno Public Assistance recorded
2018-02-112018-02-07EM-3397-ASEmergencyTropical Storm GitaHurricaneno Public Assistance recordedsame incident as DR-4357
2014-09-102014-07-29DR-4192-ASMajor disasterSevere Storms, Flooding, and LandslidesInland Flooding; Landslideno Public Assistance recorded
2009-09-292009-09-29DR-1859-ASMajor disasterEarthquake,Tsunami, and FloodingEarthquake (primary); also designated: Tsunamino Public Assistance recorded
2005-02-182005-02-15DR-1582-ASMajor disasterTc Olaf, Includ. High Winds and Surf and Heavy RainfallHurricaneno Public Assistance recorded
2004-01-132004-01-02DR-1506-ASMajor disasterHigh Winds, High Surf, and Heavy Rainfall Associated with Tropcial Cyclone HetaHurricaneno Public Assistance recorded
2003-06-062003-05-19DR-1473-ASMajor disasterHeavy Rainfall, Flooding, Landslides, and MudslidesInland Flooding; Landslideno Public Assistance recorded
1991-12-131991-12-06DR-927-ASMajor disasterHurricane ValHurricaneno Public Assistance recorded
1990-02-091990-02-02DR-855-ASMajor disasterHurricane OfaHurricaneno Public Assistance recorded
1987-01-241987-01-17DR-785-ASMajor disasterHurricane TusiHurricaneno Public Assistance recorded
1981-03-241981-03-24DR-637-ASMajor disasterTyphoon EsauHurricaneno Public Assistance recorded
1979-11-091979-11-09DR-610-ASMajor disasterFlooding, Mudslides & LandslidesInland Flooding (primary); also designated: Landslideno Public Assistance recorded
1974-09-301974-09-30DR-449-ASMajor disasterDroughtDroughtPA not declared for this county
1966-02-101966-02-10DR-213-ASMajor disasterTyphoon & High TidesHurricane (primary); also designated: Inland Floodingno Public Assistance recorded

All Public Assistance rows for this state or territory in FEMA data are recorded as Statewide or with a blank county; see the state page.

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 hazardFlags
2022-09-152022-07-12DR-4669-ASMajor disasterHigh Surf, High Winds, and FloodingInland Flooding; Strong Windwithin last 5 years

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
Coastal Flooding4012001996 to 2026-06-30
Cold Wave0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Drought5001101996 to 2026-06-30
Earthquake000010Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail0000001955 to 2026-06-30No recorded events, 1955 to 2026-06-30, NOAA NCEI Storm Events
Heat Wave4003001996 to 2026-06-30
Hurricane12000801996 to 2026-06-30
Inland Flooding11951228401996 to 2026-06-30
Landslide2000301996 to 2026-06-30
Lightning5002001996 to 2026-06-30
Strong Wind5221219001955 to 2026-06-30Includes 23 High Wind and 24 Strong Wind records.
Tornado0000001950 to 2026-06-30No recorded events, 1950 to 2026-06-30, NOAA NCEI Storm Events
Tsunami8203101996 to 2026-06-30
Volcanic Activity0000001996 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 Weather0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2025-07-26Flash Flood$150,000 property; $0 crops (zone total, 2025 dollars)1, 3Storm Events area TUTUILA (legacy zone code ASZ002), zone-levelnew since last plan; within last 5 yearsdeaths or injuries recorded
2023-09-17Drought$50,000 property; $0 crops (zone total, 2023 dollars)0, 0Storm Events area TUTUILA (legacy zone code ASZ002), zone-levelwithin last 5 yearsB1-c most damaging: Drought
2022-07-13Coastal Flood$1,900,000 property; $10,000 crops (zone total, 2022 dollars)0, 0Storm Events area TUTUILA (legacy zone code ASZ002), zone-levelwithin last 5 yearsB1-c worst recorded: Coastal Flood, Storm Surge/Tide
2022-03-12Heat$0 property; $0 crops (zone total, 2022 dollars)0, 0Storm Events area TUTUILA (legacy zone code ASZ002), zone-levelwithin last 5 yearsB1-c worst recorded: Excessive Heat, Heat
2020-02-20High Wind65 kt (75 mph) measured gust$5,000 property; $0 crops (zone total, 2020 dollars)0, 0Storm Events area TUTUILA (legacy zone code ASZ002), zone-levelB1-c worst recorded: High Wind and Strong Wind
2018-02-09Tropical Storm$50,000,000 property; $2,000,000 crops (zone total, 2018 dollars) (as recorded; larger than this county's annual agriculture value in the National Risk Index (the county or state extension service keeps crop loss records))0, 0Storm Events area TUTUILA (legacy zone code ASZ002), zone-levelB1-c most damaging: Hurricane, Tropical Storm, Tropical Depression
2009-09-29Tsunami$81,000,000 property; $20,000 crops (zone total, 2009 dollars)32, 129Storm Events area TUTUILA (legacy zone code ASZ002), zone-leveldeaths or injuries recorded
2006-04-04Lightningdamage not reported1, 1Storm Events area TUTUILA (legacy zone code ASZ002), zone-levelB1-c worst recorded: Lightning
2006-01-31Debris Flow$40,000 property; crops not reported (zone total, 2006 dollars)0, 0Storm Events area TUTUILA (legacy zone code ASZ002), zone-levelB1-c worst recorded: Debris Flow
2004-01-04Hurricane (NOAA event type 'Hurricane (Typhoon)')$50,000,000 property; crops not reported (zone total, 2004 dollars)0, 20Storm Events area TUTUILA (legacy zone code ASZ002), zone-levelB1-c worst recorded: Hurricane, Tropical Storm, Tropical Depression
2003-05-19Flash Flood$50,000,000 property; $1,000,000 crops (zone total, 2003 dollars)4, 6Storm Events area TUTUILA (legacy zone code ASZ002), zone-leveldeaths or injuries recorded
1998-08-01Droughtdamage not reported0, 0Storm Events area TUTUILA (legacy zone code ASZ002), zone-levelB1-c worst recorded: Drought

The full list is in the Excel file, sheet "B1-d Storm Events history" (211 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 Flooding0.325events per year at a location (modeled)about 0.33 per year at a given location in the countyLikelyStorm Events records in 4 of 30 years, 1996 to 2025 (13.3%)not shownmodeledsee B1-f
Cold Wave0event-days per yearnone modeledStorm Events event-days in 0 of 30 years, 1996 to 2025 (0%)02005-11-12 to 2024-11-12 (19 years)countywideNo Storm Events cold wave record, 1996 to 2025.
Droughtevent-days per yearPossibleStorm Events event-days in 2 of 30 years, 1996 to 2025 (6.67%)2000 to 2025 (25.25 years; D3 and D4 only)countywide
Earthquake0.00365annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.365%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hailevents per year1986 to 2023 (38 years)countywideNRI publishes no annualized frequency for this hazard in this county.
Heat Wave0event-days per yearnone modeledPossibleStorm Events event-days in 2 of 30 years, 1996 to 2025 (6.67%)02005-11-12 to 2024-11-12 (19 years)countywideNRI models no heat wave event-days here (2005-11-12 to 2024-11-12, 19 years); Storm Events has a record in 2 of 30 years. The descriptor comes from Storm Events, which records events NRI's definition leaves out.
Hurricane0.0789events per yearabout 1 in 13 yearsPossibleFEMA annualized frequency (modeled)61949 to 2024 (Pacific)see B1-fNRI counts hurricane and tropical storm tracks passing within storm-force wind range; federal declarations are in B1-d.
Inland Flooding3.11event-days per yearabout 3.11 days per yearLikelyStorm Events event-days in 26 of 30 years, 1996 to 2025 (86.7%)871996 to 2023 (28 years)see B1-f
Landslideevents per year (modeled)not shownmodeledsee B1-fNRI publishes no annualized frequency for this hazard in this county.
Lightningdays per year with a strikenot shown1995 to 2023 (29 years; CONUS)countywideDescriptor not assigned: NRI publishes no lightning frequency for this county.
Strong Windevents per year1986 to 2023 (38 years)countywideNRI publishes no annualized frequency for this hazard in this county.
Tornadoevents per yearnot shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-fNRI publishes no annualized frequency for this hazard in this county.
Tsunami0.357annual probability at the most exposed location (used in place of a county value)chance at the county's most exposed location in a year: 35.7%LikelyStorm Events records in 6 of 30 years, 1996 to 2025 (20%)not shownmodeledsee B1-f
Volcanic Activity0.0003annual probabilityabout 1 in 3,333 yearsUnlikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Wildfireannual probability at a locationStorm Events records in 0 of 30 years, 1996 to 2025 (0%)not shownmodeledsee B1-fNo descriptor: no Storm Events record 1996 to 2025
Winter Weather0event-days per yearnone modeledStorm Events event-days in 0 of 30 years, 1996 to 2025 (0%)02005-11-12 to 2024-11-12 (19 years)countywideNo Storm Events winter weather record, 1996 to 2025

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.

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 20250300
Hail2.00 in+1996 to 20250300
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 20250300
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 20250300
TornadoEF0-11996 to 20250300
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 Flooding0 of 7Insufficient Data 7
Cold Wave0 of 7Insufficient Data 7
Drought0 of 7Insufficient Data 7
Earthquake0 of 7Insufficient Data 7
Hail0 of 7Insufficient Data 7
Heat Wave0 of 7Insufficient Data 7
Hurricane0 of 7Insufficient Data 7
Inland Flooding0 of 7Insufficient Data 7
Landslide0 of 7Insufficient Data 7
Lightning0 of 7Insufficient Data 7
Strong Wind0 of 7Insufficient Data 7
Tornado0 of 7Insufficient Data 7
Tsunami0 of 7Insufficient Data 7
Volcanic Activity0 of 7Insufficient Data 7
Wildfire0 of 7Insufficient Data 7
Winter Weather0 of 7Insufficient Data 7

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.

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
No rows for this unit.

No city, town, township or county rows in FEMA plan data for this unit; same as county.

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 2025-06-05county-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$1,415,959,572n/a9,874$81,230n/a$4300.00574%
Cold Wave$0$00$0$0$0building exposure is 0 in NRI
Droughtn/an/an/an/an/an/aNRI publishes no agriculture exposure for this county
Earthquake$3,943,962,393n/a17,671$1,333,889n/a$4,234,3060.0338%
Hailn/an/an/an/an/an/aNRI publishes no building exposure for this county
Heat Wave$0$00$0$0$0building exposure is 0 in NRI
Hurricane$2,304,497,241$1,354,85417,658$2,613,033$4,816$208,1730.113%
Inland Flooding$2,289,213,171$238,7469,943$9,100,683$8,847$899,590n/a (see note)$285,000NRI counts the full building value of any census block with some flood loss; this is not the value of buildings in the floodplain. Use local FIRM overlays for B2-a/B2-b.
Landsliden/an/an/an/an/an/aNRI publishes no building exposure for this county
Lightningn/an/an/an/an/an/aNRI publishes no building exposure for this county
Strong Windn/an/an/an/an/an/a$175,000NRI publishes no building exposure for this county Storm Events damage since the plan includes 1 zone-level Strong Wind record ($25,000): a NOAA non-thunderstorm wind type, outside NRI's Strong Wind definition.
Tornadon/an/an/an/an/an/aNRI publishes no building exposure for this county
Tsunami$3,789,974,345n/a7,893$12,343,296n/a$14,386,7170.326%
Volcanic Activity$2,304,497,241n/a17,658$5,976n/a$2,4280.000259%
Wildfiren/an/an/an/an/an/aNRI publishes no building exposure for this county
Winter Weather$0$00$0$0$0building exposure is 0 in NRI

Totals since 2025-06-05 (Storm Events through 2026-06-30): 0 county-coded records, 0 with a damage value recorded (including $0), $0; 9 zone-level records, 7 with a damage value recorded (including $0), $460,000 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
Population17,658
Building value (total, not at risk)$2,304,497,241
Agriculture value (total, not at risk)$1,354,854
NRI risk rating (all hazards)Insufficient Data
Expected annual loss, buildings and agriculture, all hazards$25,491,770
Expected annual loss, population equivalence, all hazards (NRI values each statistical life at $13.7M; a modeled value of expected deaths and injuries, not property damage)$19,731,642
Social vulnerability ratingData Unavailable
Community resilience ratingData Unavailable
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 definition0Severe 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 total0000000
Statewide, no county in FEMA's file0020200

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

County repeat-flood properties by occupancy group: 0 in every occupancy group.

Sources: 1, 4

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 0 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). Eastern District, AS: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 60010). Automated baseline. https://hazardplain.org/as/60010/ 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]