Hazard Plain Automated baseline

Berkshire County, MA

Risk-assessment baseline packet

County FIPS:
25003
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: No county-level plan row in FEMA data.

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Inland Flooding ($41,411,967 a year), Hurricane ($3,194,835) and Cold Wave ($2,398,945).

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

No county-level plan row in FEMA data

What changed since your last plan

Not available. No county-level plan row in FEMA data, so there is no approval date to count from.

Sources: 1, 2, 4, 6 (numbered list at the end)

Plan status for every jurisdiction listed in this county: 31 rows, in the section "Plan clock: Plan status for every jurisdiction listed in this county" on the following pages.

State plan status and tribal plans in this state: see the state page.

Plan clock

Plan status for every jurisdiction listed in this county

Source: 1

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiry
North Adams cityCityExpired on 2026-01-21North Adams Hazard Mitigation and Climate Adaptation Plan (FEMA plan 106509)2021-01-222026-01-21-252
Pittsfield cityCityApproved, expires 2030-11-18City of Pittsfield, MA Hazard Mitigation Plan Update (FEMA plan 111034)2025-11-192030-11-181,510
Adams townTownApproved, expires 2029-09-23Town of Adams, MA Hazard Mitigation Plan Update April 2024 (FEMA plan 109889)2024-09-242029-09-231,089
Becket townTownExpired on 2025-10-07Hazard Mitigation Plan May 2020 Town of Becket, Massachusetts (FEMA plan 106803)2020-10-082025-10-07-358
Cheshire townTownApproved, expires 2030-05-05Town of Cheshire, MA Draft Hazard Mitigation and Climate Adaptation Plan (FEMA plan 109558)2025-05-062030-05-051,313
Clarksburg townTownApproved, expires 2026-12-07Town of Clarksburg Hazard Mitigation and Climate Adaptation Plan (FEMA plan 107805)2021-12-082026-12-0768
Dalton townTownApproved, expires 2029-08-27Town of Dalton, MA Hazard Mitigation Plan Update April 2024 (FEMA plan 109843)2024-08-282029-08-271,062
Egremont townTownApproved, expires 2028-02-22Town of Egremont 2022 Municipal Vulnerability Preparedness (MVP) - Hazard Mitigation Plan (HMP) (FEMA plan 108452)2023-02-232028-02-22510
Florida townTownApproved, expires 2031-07-12Town of Florida Hazard Mitigation and Municipal Vulnerability Preparedness Plan (FEMA plan 111084)2026-07-132031-07-121,746
Great Barrington townTownExpired on 2026-01-12Great Barrington Hazard Mitigation & Climate Adaptation Plan (FEMA plan 106952)2021-01-132026-01-12-261
Hancock townTownApproved, expires 2031-04-05Town of Hancock Ma Hazard Mitigation and Climate Adaptation Plan (FEMA plan 111238)2026-04-062031-04-051,648
Hinsdale townTownApproved, expires 2029-08-21Town of Hinsdale, MA Hazard Mitigation Plan Update April 2024 (FEMA plan 109888)2024-08-222029-08-211,056
Lanesborough townTownExpired on 2024-03-27Lanesborough Multi-Hazard Mitigation Plan Update 2019 (FEMA plan 105623)2019-03-282024-03-27-917
Lee townTownApproved, expires 2031-03-31Town of Lee, MA Hazard Mitigation and Climate adaptation Plan (FEMA plan 111237)2026-04-012031-03-311,643
Lenox townTownApproved, expires 2028-04-16Town of Lenox Hazard Mitigation & Climate Adaptation Plan (FEMA plan 108308)2023-04-172028-04-16564
Monterey townTownExpired on 2025-12-14Monterey Hazard Mitigation and Climate Adaptation Plan (FEMA plan 106510)2020-12-152025-12-14-290
Mount Washington townTownApproved, expires 2028-04-03Town of Mount Washington Hazard Mitigation and Climate Adaptation Plan (FEMA plan 108761)2023-04-042028-04-03551
New Ashford townTownApproved, expires 2028-04-16Town of New Ashford Hazard Mitigation Plan and Municipal Vulnerability Preparedness Report (FEMA plan 108920)2023-04-172028-04-16564
New Marlborough townTownExpired on 2026-03-23New Marlborough Hazard Mitigation and Climate Adaptation Plan (FEMA plan 107213)2021-03-242026-03-23-191
Otis townTownApproved, expires 2027-06-15Town of Otis Hazard Mitigation and Climate Adaptation Plan (FEMA plan 108216)2022-06-162027-06-15258
Peru townTownApproved, expires 2027-01-06Town of Peru Hazard Mitigation and Climate Adaptation Plan (FEMA plan 107773)2022-01-072027-01-0698
Richmond townTownExpired on 2026-06-28Town of Richmond 2021 Municipal Vulnerability Preparedness (MVP) - Hazard Mitigation Plan (HMP) (FEMA plan 107534)2021-06-292026-06-28-94
Sandisfield townTownExpired on 2018-02-26Berkshire County Hazard Mitigation Plan (FEMA plan 10284)2013-02-262018-02-26-3,138
Savoy townTownExpired on 2026-07-14Town of Savoy, MA Hazard Mitigation Plan (FEMA plan 107566)2021-07-152026-07-14-78
Sheffield townTownExpired on 2024-04-11Town of Sheffield Hazard Mitigation Plan (FEMA plan 105526)2019-04-122024-04-11-902
Stockbridge townTownExpired on 2026-03-08Town of Stockbridge Hazard Mitigation and Climate Adaptation Plan (FEMA plan 107029)2021-03-092026-03-08-206
Tyringham townTownExpired on 2026-06-23Town of Tyringham Natural Hazard Mitigation Plan Update (FEMA plan 107501)2021-06-242026-06-23-99
Washington townTownExpired on 2024-07-01Washington Hazard Mitigation Plan (FEMA plan 105749)2019-07-022024-07-01-821
West Stockbridge townTownApproved, expires 2027-01-26Town of West Stockbridge Hazard Mitigation Plan (FEMA plan 107909)2022-01-272027-01-26118
Williamstown townTownApproved, expires 2030-11-12Town of Williamstown, MA Hazard Mitigation Plan Update March 2025 (FEMA plan 110866)2025-11-132030-11-121,504
Windsor townTownApproved, expires 2026-10-06Windsor Hazard Mitigation & Climate Adaptation Plan (FEMA plan 106618)2021-10-072026-10-066

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$41,176,893$597$234,477$41,411,967150
2HurricaneRelatively ModerateRelatively Moderate$2,996,406$86,494$111,935$3,194,8352
3Cold WaveRelatively ModerateRelatively Moderate$537$11,613$2,386,795$2,398,94575Includes 17 Frost/Freeze records (outside NRI's Cold Wave definition; counted in this table and in B1-d, not in the B1-e descriptor).
4Strong WindRelatively ModerateRelatively Moderate$87,541$9,231$1,193,205$1,289,977664Includes 49 High Wind and 71 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
5TornadoRelatively LowRelatively Low$959,495$662$226,434$1,186,5918
6EarthquakeRelatively LowRelatively Low$747,338n/a$173,537$920,874Storm Events does not record earthquakes.
7LightningRelatively ModerateRelatively Moderate$38,595n/a$430,524$469,11916
8Ice StormRelatively ModerateRelatively Moderate$276,162n/a$16,931$293,0933
9HailRelatively LowRelatively Low$15,906$27,097$248,377$291,380139
10Heat WaveVery LowVery Lowunder $1$1,416$175,151$176,56724
11Winter WeatherRelatively LowRelatively Moderate$44,457$5$41,552$86,014260
12LandslideRelatively LowRelatively Low$17,849n/a$4,624$22,4731
13WildfireVery LowVery Low$9,460$2$1,276$10,7395
14DroughtVery LowVery Lown/a$6,682n/a$6,6827
15AvalancheVery LowVery Lowunder $1n/a$2,842$2,8420No recorded events in Storm Events since 1996 (data through 2026-06-30).
Coastal FloodingNot ApplicableNot Applicable0Declared 1 time; no Storm Events record of this type.

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.

Not applicable to this county per NRI, with no federal declaration and no Storm Events record since 1996: 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 9215 (Very Low, 59.2); tract 9214 (Very Low, 59.1); tract 9223 (Very Low, 58.7)
Coastal Floodingno tract has a National Risk Index rating for this hazard
Earthquaketract 9001 (Relatively Low, 77.3); tract 9002 (Relatively Low, 70.6); tract 9006 (Relatively Low, 65.9)
Hurricanetract 9251.02 (Relatively Moderate, 83.1); tract 9131 (Relatively Moderate, 82.1); tract 9001 (Relatively Moderate, 82.0)
Landslidetract 9351 (Relatively Moderate, 95.9); tract 9251.02 (Relatively Low, 94.7); tract 9343 (Relatively Low, 94.4)
Tornadotract 9251.02 (Relatively Low, 51.2); tract 9001 (Relatively Low, 49.9); tract 9131 (Relatively Low, 49.8)
Wildfiretract 9251.02 (Relatively Low, 72.6); tract 9261 (Relatively Low, 71.0); tract 9343 (Very Low, 65.7)

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 9215 is Census Tract 9215). 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
Coastal Flood, Storm Surge/Tidenone in data (flood depth: FIRM)0Flood depth: see the FEMA Flood Insurance Rate Map.
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill58 records, 2000 to 2026 (58 zone-level)1 day to 5 days (median 2 days); 44 with a recorded value5 consecutive days, 2026-01-29 to 2026-02-02, zone-levelCountywide (zone-level records).
Frost/Freeze (outside NRI's Cold Wave definition)crop damage17 records, 2002 to 2023 (17 zone-level)No crop damage reported in 17 records.Countywide (zone-level records).
DroughtU.S. Drought Monitor scale (D0 to D4)7 records, 1999 to 2024 (7 zone-level)30 days to 57 days (median 33 days); 4 with a recorded value57 days (about 1.9 months), 2022-08-16 to 2022-10-11, a run of 3 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)177 records, 1955 to 20250.75 in to 4 in (median 0.88 in); 175 with a recorded value4 in hail, 2011-06-01Hail, 2001-06-20, $15,000 property; crops not reported (2001 dollars)Event records naming jurisdictions in the plan: Pittsfield city (17 records), North Adams city (10 records), Great Barrington town (9 records), Windsor town (7 records), Adams town (6 records), Lenox town (6 records), Otis town (6 records), Dalton town (5 records), Lee town (5 records), Becket town (4 records); and 15 more jurisdictions (see the Excel file).
Excessive Heat, Heatheat index (in event narratives)24 records, 1998 to 2025 (24 zone-level)1 day to 4 days (median 2 days); 19 with a recorded value4 consecutive days, 2018-09-03 to 2018-09-06, zone-levelCountywide (zone-level records).Heat records from November to March (unseasonable warmth, not a heat wave) are counted but not used for the longest run.
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson2 records, 2011 to 2020 (2 zone-level)Strongest recorded: Tropical Storm record, 2020-08-04, $0 property; $0 crops (2020 dollars); NWS zone MAZ001Countywide (zone-level records).Storm Events files every zone of a storm's episode under the storm's type; flooding from the storm is filed as Flood or Flash Flood records.
Ice StormSperry-Piltz ice scale (local data)3 records, 2007 to 2019 (3 zone-level)No damage reported in 3 records.Countywide (zone-level records).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)150 records, 1996 to 2023 (14 zone-level)Flood, 2023-07-10, $1,500,000 property; $0 crops (2023 dollars)Event records naming jurisdictions in the plan: Pittsfield city (18 records), North Adams city (9 records), Lenox town (8 records), Great Barrington town (7 records), Williamstown town (7 records), Becket town (4 records), Dalton town (4 records), Sheffield town (4 records), Stockbridge town (4 records), West Stockbridge town (4 records); and 12 more jurisdictions (see the Excel file). Zone-level records (14) apply countywide.Flood depth: see the FEMA Flood Insurance Rate Map. Storm Events damage is often $0 or blank for floods, major ones included; FEMA Public Assistance by declaration (B1-d) shows which floods cost the most.
Debris Flownone (count and damage only)1 record, 2020No damage reported in 1 record.Event records naming jurisdictions in the plan: North Adams city (1 record).
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)16 records, 1997 to 2024Lightning, 2008-08-07, $200,000 property; $0 crops (2008 dollars)Event records naming jurisdictions in the plan: North Adams city (5 records), Williamstown town (2 records), Adams town (1 record), Great Barrington town (1 record), Hancock town (1 record), Lenox town (1 record), West Stockbridge town (1 record).Storm Events lists lightning with damage or casualties.
High Wind and Strong Wind (outside NRI's Strong Wind definition)wind speed (kt and mph)120 records, 1996 to 2026 (120 zone-level)35 kt (40 mph) to 60 kt (69 mph) (median 47 kt (54 mph)); 109 with a recorded value60 kt (69 mph) measured gust, High Wind, 2019-02-24; NWS zone MAZ001Strong Wind, 2014-03-29, $100,000 property; $0 crops (zone total, 2014 dollars)Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)660 records, 1956 to 202640 kt (46 mph) to 87 kt (100 mph) (median 50 kt (58 mph)); 514 with a recorded value87 kt (100 mph) estimated gust, Thunderstorm Wind, 2008-07-24; same speed and measurement basis also recorded on 2007-09-09Thunderstorm Wind, 2021-07-27, $300,000 property; $200,000 crops (2021 dollars)Event records naming jurisdictions in the plan: Pittsfield city (67 records), Lenox town (31 records), Lanesborough town (29 records), Great Barrington town (27 records), Lee town (27 records), North Adams city (26 records), Stockbridge town (24 records), Cheshire town (21 records), Sheffield town (15 records), Adams town (11 records); and 18 more jurisdictions (see the Excel file).
TornadoEnhanced Fujita (Fujita before Feb 2007)19 records, 1955 to 2020F/EF0 to F/EF4 (median F/EF1); 19 with a recorded valueF4 tornado, 1973-08-28, 6.4 mi path length (whole path, pre-1996), 313 yd wide, $25,000,000 property; crops not recorded (1973 dollars), 4 direct deaths, 36 direct injuriesEvent records naming jurisdictions in the plan: Florida town (1 record), Great Barrington town (1 record), Monterey town (1 record), Pittsfield city (1 record), Richmond town (1 record), Sandisfield 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)5 records, 2002 to 2024 (5 zone-level)Wildfire, 2024-11-08, $75,000 property; crops not reported (2024 dollars); NWS zone MAZ001Countywide (zone-level records).
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)260 records, 1996 to 2026 (260 zone-level)Winter Storm, 1997-03-31, $1,000,000 property; crops not reported (1997 dollars); NWS zone MAZ001Countywide (zone-level records).

Where a hazard names more than 10 jurisdictions, the table lists the 10 with the most records; every one is in the Excel file, sheet "B1-c Extent".

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: 23 declarations covering 17 separate hazard incidents counted in this packet (declarations for the same incident count once; non-natural and evacuation-only declarations are not counted).

No county-level plan row in FEMA data, so there is no approval date to count from.

Federal disaster declarations for this county

Sources: 1, 2, 3

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsFlagsNotes
2023-09-152023-09-15EM-3599-MAEmergencyHurricane LeeHurricaneno Public Assistance recordedwithin last 5 years
2020-03-272020-01-20DR-4496-MAMajor disasterCOVID-19 PandemicNon-natural, not counted$20,010,337.52
2020-03-132020-01-20EM-3438-MAEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedsame incident as DR-4496
2013-04-192013-02-08DR-4110-MAMajor disasterSevere Winter Storm, Snowstorm, and FloodingInland Flooding; Winter Weather$526,958.49
2012-10-282012-10-27EM-3350-MAEmergencyHurricane SandyHurricaneno Public Assistance recorded
2012-01-062011-10-29DR-4051-MAMajor disasterSevere Storm and SnowstormWinter Weather$404,015.74
2011-11-012011-10-29EM-3343-MAEmergencySevere StormHazard not mapped (severe storm title names no single hazard); not countedno Public Assistance recordedsame incident as DR-4051
2011-09-032011-08-27DR-4028-MAMajor disasterTropical Storm IreneHurricane$8,857,683.02
2011-08-262011-08-26EM-3330-MAEmergencyHurricane IreneHurricaneno Public Assistance recordedsame incident as DR-4028
2011-03-072011-01-11DR-1959-MAMajor disasterSevere Winter Storm and SnowstormWinter Weather$687,684.63
2009-01-052008-12-11DR-1813-MAMajor disasterSevere Winter Storm and FloodingIce Storm$2,430,073.84
2008-12-132008-12-11EM-3296-MAEmergencySevere Winter StormWinter Weatherno Public Assistance recordedsame incident as DR-1813
2007-05-162007-04-15DR-1701-MAMajor disasterSevere Storms and Inland and Coastal FloodingCoastal Flooding$643,630.79
2005-11-102005-10-07DR-1614-MAMajor disasterSevere Storms and FloodingInland Flooding$1,529,500.99
2005-09-132005-08-29EM-3252-MAEmergencyHurricane Katrina EvacuationHurricane: evacuation support, not a local hazard event; not countedno Public Assistance recorded
2005-02-172005-01-22EM-3201-MAEmergencyRecord and/or Near Record SnowWinter Weather$572,497.69
2004-01-152003-12-06EM-3191-MAEmergencySnowWinter Weather$399,402.57
2003-03-112003-02-17EM-3175-MAEmergencySnowWinter Weather$364,886.92
2001-03-282001-03-05EM-3165-MAEmergencySnowWinter Weather$301,029.40
1996-01-241996-01-07DR-1090-MAMajor disasterBlizzard of 96Winter Weatherno Public Assistance recorded
1993-03-161993-03-13EM-3103-MAEmergencyBlizzards, High Winds & Record SnowfallWinter Weatherno Public Assistance recorded
1987-04-181987-03-30DR-790-MAMajor disasterSevere Storms & FloodingInland Floodingno Public Assistance recorded
1985-10-281985-09-27DR-751-MAMajor disasterHurricane GloriaHurricaneno 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
1955-08-201955-08-20DR-43-MAMajor disasterHurricane & FloodsHurricane (primary); also designated: Inland Flooding
1954-09-021954-09-02DR-22-MAMajor disasterHurricanesHurricane (primary); also designated: Inland Flooding
1953-06-111953-06-11DR-7-MAMajor disasterTornadoTornado

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.

1 Fire Management declaration (1995-09-12 to 1995-09-12) FEMA filed as Statewide with no county; each names one local fire. Listed on the state page.

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
Avalanche0001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Coastal Flooding0011996 to 2026-06-30No Storm Events records of this type; 1 federal declared incident (see declarations table)
Cold Wave751801996 to 2026-06-30Includes 17 Frost/Freeze records.
Drought7501996 to 2026-06-30
Earthquake000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail177201955 to 2026-06-30
Heat Wave24601996 to 2026-06-30
Hurricane2041996 to 2026-06-30
Ice Storm3011996 to 2026-06-30
Inland Flooding1501331996 to 2026-06-30
Landslide1001996 to 2026-06-30
Lightning16101996 to 2026-06-30
Strong Wind78014801955 to 2026-06-30Includes 49 High Wind and 71 Strong Wind records.
Tornado19001950 to 2026-06-30
Wildfire5301996 to 2026-06-30
Winter Weather26053101996 to 2026-06-30

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2026-01-29Extreme Cold/Wind Chilldamage not reported0, 0NWS zone MAZ001 (NORTHERN BERKSHIRE), zone-levelwithin last 5 yearsB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2023-07-10Flood$1,500,000 property; $0 crops (2023 dollars)0, 0BRAYTONVILLE to NORTH ADAMSwithin last 5 yearsB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2022-07-12Thunderstorm Wind50 kt (58 mph) estimated gustdamage not reported1, 0WEST STOCKBRIDGEwithin last 5 yearsdeaths or injuries recorded
2020-08-04Tropical Storm$0 property; $0 crops (zone total, 2020 dollars)0, 0NWS zone MAZ001 (NORTHERN BERKSHIRE), zone-levelB1-c worst recorded: Hurricane, Tropical Storm, Tropical Depression
2019-02-24High Wind60 kt (69 mph) measured gustdamage not reported0, 0NWS zone MAZ001 (NORTHERN BERKSHIRE), zone-levelB1-c worst recorded: High Wind and Strong Wind
2018-09-03Heatdamage not reported0, 0NWS zone MAZ001 (NORTHERN BERKSHIRE), zone-levelB1-c worst recorded: Excessive Heat, Heat
2011-06-01Hail4 inproperty not reported; $0 crops (2011 dollars)0, 0EAST WINDSORB1-c worst recorded: Hail
2008-08-07Lightning$200,000 property; $0 crops (2008 dollars)0, 0WILLIAMSTOWNB1-c worst recorded: Lightning
2008-07-24Thunderstorm Wind87 kt (100 mph) estimated gust$0 property; $0 crops (2008 dollars)0, 0PERUB1-c worst recorded: Thunderstorm Wind
1997-03-31Winter Storm$1,000,000 property; crops not reported (zone total, 1997 dollars)0, 0NWS zone MAZ001 (BERKSHIRE), zone-levelB1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
1995-05-29TornadoF4, length not shown: implausible value in source, 12 yd wide$250 property; crops not recorded (1995 dollars)3, 24N. Egremont to Sandisfielddeaths or injuries recorded
1973-08-28TornadoF4, 6.4 mi path length (whole path, pre-1996), 313 yd wide$25,000,000 property; crops not recorded (1973 dollars)4, 36location not recordeddeaths or injuries recorded

The full list is in the Excel file, sheet "B1-d Storm Events history" (1,519 rows).

Location is the place NOAA recorded, as written in its data; it need not be a jurisdiction in this plan.

Local data needed: state-declared emergencies, from your state emergency management agency (federal data do not include them).

Tribal and special-area declarations in this state are listed on the state page.

Supports FEMA checklist item B1-e: probability of future events

Probability: FEMA annualized frequency and descriptor per hazard

Sources: 5, 6

HazardFEMA annualized frequency (modeled)unit per rowUnitIn plain termsDescriptorDescriptor basisNRI events or days in its record period (hail, wind and tornado are area-weighted, so can be fractional)NRI periodLocationNote
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.
Coastal Floodingevents per year at a location (modeled)not shownmodeledsee B1-fNot Applicable in NRI for this county; no descriptor.
Cold Wave4.31event-days per yearabout 4.31 days per yearLikelyStorm Events event-days in 16 of 30 years, 1996 to 2025 (53.3%)81.92005-11-12 to 2024-11-12 (19 years)countywide
Drought0.746event-days per yearabout 0.746 days per yearLikelyStorm Events event-days in 3 of 30 years, 1996 to 2025 (10%)842000 to 2025 (25.25 years; D3 and D4 only)countywide
Earthquake0.00105annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.105%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail3.12events per yearabout 3.12 per yearHighly likelyFEMA annualized frequency (modeled)118.5 (modeled)1986 to 2023 (38 years)countywide
Heat Wave1.74event-days per yearabout 1.74 days per yearLikelyStorm Events event-days in 13 of 30 years, 1996 to 2025 (43.3%)32.12005-11-12 to 2024-11-12 (19 years)countywide
Hurricane0.0786events per yearabout 1 in 13 yearsPossibleFEMA annualized frequency (modeled)261851 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 Storm1.23event-days per yearabout 1.23 days per yearLikelyStorm Events event-days in 3 of 30 years, 1996 to 2025 (10%)831946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding2.64event-days per yearabout 2.64 days per yearLikelyStorm Events event-days in 24 of 30 years, 1996 to 2025 (80%)741996 to 2023 (28 years)see B1-f
Landslide1.25events per year (modeled)about 1.25 per yearHighly likelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning26.3days per year with a strikeabout 26.3 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind1.84events per yearabout 1.84 per yearHighly likelyFEMA annualized frequency (modeled)711986 to 2023 (38 years)countywide
Tornado0.274events per yearabout 1 in 4 yearsLikelyFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Wildfire0.0000458annual probability at a locationchance a given location in the county burns in a year: 0.00458%LikelyStorm Events records in 3 of 30 years, 1996 to 2025 (10%)not shownmodeledsee B1-f
Winter Weather21.8event-days per yearabout 21.8 days per yearHighly likelyStorm Events event-days in 30 of 30 years, 1996 to 2025 (100%)4142005-11-12 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 202568302.27
Hail2.00 in+1996 to 20254300.133
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 20254463014.9
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 202514300.467
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 202573302.43
TornadoEF0-11996 to 20256300.2
TornadoEF2-31996 to 20252300.0667
TornadoEF4-51996 to 20250300
Tornadounrated (EFU)1996 to 20250300

The bands show how often events of each severity were recorded in this county, to profile how severe events have been (FEMA's probability item asks for the range of intensities).

Hail smaller than 1 inch is not counted: on 2010-01-05 the National Weather Service raised its severe-hail threshold from 3/4 inch to 1 inch, so smaller reports became less common after 2009 (NWS Service Change Notice 09-52). NRI hail frequency uses a 0.75 inch threshold.

Optional: future conditions. Not a required item in the 2025 FEMA Local Mitigation Planning Policy Guide; some states ask for it. The federal Climate Mapping for Resilience and Adaptation (CMRA) site gives county exposure to future climate conditions (https://resilience.climate.gov/).

Supports FEMA checklist item B1-f: hazards that vary across jurisdictions

Range of census tract risk within the county

Source: 5

HazardTractsrated of allNRI risk score, 0 to 100Tracts by rating
MinMedianMax
Avalanche20 of 4055.257.159.2Very Low 20, Not Applicable 20
Coastal Flooding0 of 40Not Applicable 40
Cold Wave40 of 4031.851.071.0Relatively Moderate 25, Relatively Low 15
Drought2 of 4082.583.183.7Relatively Low 2, No Rating 38
Earthquake40 of 4013.134.577.3Relatively Low 16, Very Low 24
Hail40 of 4033.449.463.8Relatively Low 37, Very Low 3
Heat Wave40 of 402.74.814.4Very Low 40
Hurricane40 of 4058.573.283.1Relatively Moderate 9, Relatively Low 31
Ice Storm40 of 4021.256.282.1Relatively Moderate 10, Relatively Low 27, Very Low 3
Inland Flooding40 of 406.665.697.7Very High 2, Relatively High 15, Relatively Moderate 13, Relatively Low 7, Very Low 3
Landslide40 of 4031.688.395.9Relatively Moderate 1, Relatively Low 26, Very Low 13
Lightning40 of 4024.346.572.8Relatively Moderate 18, Relatively Low 22
Strong Wind40 of 4037.464.184.0Relatively High 3, Relatively Moderate 27, Relatively Low 10
Tornado40 of 4020.434.951.2Relatively Low 31, Very Low 9
Wildfire38 of 4027.044.272.6Relatively Low 2, Very Low 36, No Rating 2
Winter Weather40 of 4028.143.162.5Relatively Moderate 14, Relatively Low 26

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
North Adams cityCityExpired on 2026-01-21FMA RL 0, SRL 0; any 1$807,877.3951 total; 5 since its planIncludes $146,922.32 for declarations not counted as hazard incidents (DR-4496-MA).
Pittsfield cityCityApproved, expires 2030-11-18FMA RL 0, SRL 0; any 11$980,742.52103 total; 3 since its planIncludes $278,427.72 for declarations not counted as hazard incidents (DR-4496-MA).
Adams townTownApproved, expires 2029-09-23FMA RL 0, SRL 0; any 1$296,783.8420 total; 0 since its planIncludes $39,628.89 for declarations not counted as hazard incidents (DR-4496-MA).
Becket townTownExpired on 2025-10-07FMA RL 0, SRL 0; any 0$1,019,168.3019 total; 7 since its plan
Cheshire townTownApproved, expires 2030-05-05FMA RL 0, SRL 0; any 1$225,663.7326 total; 1 since its planIncludes $10,502.92 for declarations not counted as hazard incidents (DR-4496-MA).
Clarksburg townTownApproved, expires 2026-12-07FMA RL 0, SRL 0; any 0$161,346.091 total; 0 since its planIncludes $32,861 for declarations not counted as hazard incidents (DR-4496-MA).
Dalton townTownApproved, expires 2029-08-27FMA RL 0, SRL 0; any 2$153,548.8619 total; 0 since its planIncludes $9,820 for declarations not counted as hazard incidents (DR-4496-MA).
Egremont townTownApproved, expires 2028-02-22FMA RL 0, SRL 0; any 0$101,245.930 total; 0 since its plan
Florida townTownApproved, expires 2031-07-12FMA RL 0, SRL 0; any 0$893,044.925 total; not yet covered
Great Barrington townTownExpired on 2026-01-12FMA RL 0, SRL 0; any 2$477,861.9345 total; 5 since its planIncludes $17,557.10 for declarations not counted as hazard incidents (DR-4496-MA).
Hancock townTownApproved, expires 2031-04-05FMA RL 0, SRL 0; any 0$23,024.209 total; 0 since its plan
Hinsdale townTownApproved, expires 2029-08-21FMA RL 0, SRL 0; any 0$506,224.5710 total; 0 since its planIncludes $7,758.47 for declarations not counted as hazard incidents (DR-4496-MA).
Lanesborough townTownExpired on 2024-03-27FMA RL 0, SRL 0; any 0$238,455.5932 total; 11 since its planIncludes $22,154.76 for declarations not counted as hazard incidents (DR-4496-MA).
Lee townTownApproved, expires 2031-03-31FMA RL 0, SRL 0; any 3$303,050.4734 total; 1 since its planIncludes $87,133.23 for declarations not counted as hazard incidents (DR-4496-MA).
Lenox townTownApproved, expires 2028-04-16FMA RL 0, SRL 1; any 2$249,862.9346 total; 4 since its planIncludes $120,225.93 for declarations not counted as hazard incidents (DR-4496-MA).
Monterey townTownExpired on 2025-12-14FMA RL 1, SRL 0; any 5$535,883.0112 total; 1 since its planIncludes $85,401.75 for declarations not counted as hazard incidents (DR-4496-MA).
Mount Washington townTownApproved, expires 2028-04-03FMA RL 0, SRL 0; any 0$114,016.992 total; 0 since its plan
New Ashford townTownApproved, expires 2028-04-16FMA RL 0, SRL 0; any 0$30,288.194 total; 0 since its plan
New Marlborough townTownExpired on 2026-03-23FMA RL 0, SRL 0; any 1$556,506.7110 total; 1 since its plan
Otis townTownApproved, expires 2027-06-15FMA RL 0, SRL 0; any 0$464,966.5320 total; 1 since its plan
Peru townTownApproved, expires 2027-01-06FMA RL 0, SRL 0; any 0$392,362.974 total; 0 since its plan
Richmond townTownExpired on 2026-06-28FMA RL 0, SRL 0; any 0$56,945.013 total; 0 since its plan
Sandisfield townTownExpired on 2018-02-26FMA RL 0, SRL 0; any 0$592,691.077 total; 2 since its plan
Savoy townTownExpired on 2026-07-14FMA RL 0, SRL 0; any 0$5,555,080.177 total; 0 since its plan
Sheffield townTownExpired on 2024-04-11FMA RL 0, SRL 0; any 0$240,784.6122 total; 8 since its planIncludes $82,945.44 for declarations not counted as hazard incidents (DR-4496-MA).
Stockbridge townTownExpired on 2026-03-08FMA RL 0, SRL 0; any 1$71,464.5132 total; 7 since its plan
Tyringham townTownExpired on 2026-06-23FMA RL 0, SRL 0; any 0$152,182.404 total; 1 since its plan
Washington townTownExpired on 2024-07-01FMA RL 0, SRL 0; any 0$417,253.1115 total; 8 since its plan
West Stockbridge townTownApproved, expires 2027-01-26FMA RL 0, SRL 0; any 1$117,521.6418 total; 5 since its plan
Williamstown townTownApproved, expires 2030-11-12FMA RL 0, SRL 0; any 0$312,373.5921 total; 0 since its planIncludes $8,843.44 for declarations not counted as hazard incidents (DR-4496-MA).
Windsor townTownApproved, expires 2026-10-06FMA RL 0, SRL 0; any 0$362,879.1611 total; 1 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.

No county-level plan row in FEMA data, so there is no approval date to count from.

  • 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 plancounty-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
Avalanche$207,598n/a1under $1n/a$2,842under 0.0001%
Coastal FloodingNot Applicable in NRI for this county
Cold Wave$30,059,348,583$30,246,034128,939$537$11,613$2,386,795under 0.0001%
Droughtn/a$1,692,990n/an/a$6,682n/a0.395% (agriculture)NRI has no building exposure for this hazard; agriculture shown
Earthquake$52,438,792,053n/a129,026$747,338n/a$173,5370.00143%
Hail$30,059,348,583$30,246,034128,939$15,906$27,097$248,377under 0.0001%
Heat Wave$30,059,348,583$30,246,034128,939under $1$1,416$175,151under 0.0001%
Hurricane$30,057,768,560$30,246,034128,927$2,996,406$86,494$111,9350.00997%
Ice Storm$30,051,077,991n/a128,892$276,162n/a$16,9310.000919%
Inland Flooding$29,998,019,223$4,228,1125,794$41,176,893$597$234,477n/a (see note)NRI counts the full building value of any census block with some flood loss; this is not the value of buildings in the floodplain. Use local FIRM overlays for B2-a/B2-b.
Landslide$1,314,820,751n/a5,999$17,849n/a$4,6240.00136%
Lightning$30,059,348,583n/a128,939$38,595n/a$430,5240.000128%
Strong Wind$30,059,348,583$30,246,034128,939$87,541$9,231$1,193,2050.000291%
Tornado$30,059,348,583$30,246,034128,939$959,495$662$226,4340.00319%
Wildfire$3,733,972,474$5,091,88419,177$9,460$2$1,2760.000253%
Winter Weather$30,059,348,583$30,246,034128,939$44,457$5$41,5520.000148%

Totals since the plan: not available. No county-level plan row in FEMA data, so there is no approval date to count from.

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
Population128,939
Building value (total, not at risk)$30,059,348,583
Agriculture value (total, not at risk)$30,246,034
NRI risk rating (all hazards)Relatively Moderate
Expected annual loss, buildings and agriculture, all hazards$46,514,437
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)$5,247,661
Social vulnerability ratingRelatively Moderate
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)1Severe repetitive loss, FMA definition (44 CFR 77.2)1
Repetitive loss, NFIP insurance definition30Severe repetitive loss, NFIP insurance definition1

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 total113013116
of which: Adams town0010100
of which: Cheshire town0010100
of which: Dalton town0020200
of which: Great Barrington town0020200
of which: Lee town0030301
of which: Lenox town0121201
of which: Monterey town1040510
of which: New Marlborough town0010100
of which: North Adams city0010101
of which: Pittsfield city001101103
of which: Stockbridge town0010100
of which: West Stockbridge town0010100

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

Sources: 1, 4

JurisdictionNFIP community IDRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
North Adams city2500340010101
Pittsfield city250037001101103
Adams town2500160010100
Becket town2500180000000
Cheshire town2500190010100
Clarksburg town2500200000000
Dalton town2500210020200
Egremont town2500220000000
Florida town2500230000000
Great Barrington town2500240020200
Hancock town2500250000000
Hinsdale town2500260000000
Lanesborough town2500270000000
Lee town2500280030301
Lenox town2500290121201
Monterey town2500301040510
Mount Washington town2500310000000
New Ashford town2500320000000
New Marlborough town2500330010100
Otis town2500350000000
Peru town2500360000000
Richmond town2500380000000
Sandisfield town2500390000000
Savoy town2500400000000
Sheffield town2500410000000
Stockbridge town2500420010100
Tyringham town2500430000000
Washington town2500440000000
West Stockbridge town2500450010100
Williamstown town2500460000000
Windsor town2500470000000

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 residential112612716
2 to 4 unit residential0000000
other residential0010100
non-residential0030300
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 1 property is FMA repetitive loss but not NFIP repetitive loss, and 30 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). Berkshire County, MA: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 25003). Automated baseline. https://hazardplain.org/ma/25003/ 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