Hazard Plain Preview: automated baseline

Weybridge town, VT

Risk-assessment baseline packet (county-level sections from Addison County)

Unit
Vermont town 5000183275
Release
2026-10
As of
2026-09-28
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.

A starting point for the plan's risk assessment (FEMA Local Mitigation Plan Review Tool, Element B). It does not replace local data or FEMA review. Section headings say which FEMA review item each table supports; whether an item is satisfied is decided by the plan and its reviewers.

Hazard Plain release 2026-10, as of 2026-09-28. Independent product; not a FEMA document.

Plan clock

No plan row in FEMA data

What changed since your last plan

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

Sources

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)

FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-27T010817Z, pulled 2026-09-28, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)

Plan status for this town

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiryUpdate underwayNotes
No rows for this unit.

No member jurisdictions in FEMA plan data for this unit.

Source

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)

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

Supports B1-a: hazards

Inherited from Addison County, county-level (county FIPS 50001); scope: whole section.

Hazards NRI does not cover: check locally

  • 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)

Rank by EALHazardNRI risk ratingEAL ratingEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearEAL population equivalencestatistical value of life and injury, $13.7M per life, not property damageEAL total (see note)modeled dollars per yearStorm Events records since 1996countEvidence for an omissionNRI Not Applicable, no declaration and no Storm Events record since 1996Storm Events coverage note
1Inland FloodingRelatively LowRelatively Low$7,702,083$38,650$36,679$7,777,41177
2Cold WaveRelatively LowRelatively Low$197$102,611$614,167$716,97533Includes 5 Frost/Freeze records, event types the NRI definition of this hazard leaves out.
3HurricaneRelatively LowRelatively Low$450,074$134,535$10,633$595,2420Declared 3 times; no Storm Events record of this type.
4EarthquakeVery LowRelatively Low$419,010$55,018$474,027Not in Storm Events. Storm Events coverage of this hazard is limited; absence is not evidence of low risk.
5Strong WindRelatively LowRelatively Low$181,296$8,380$201,028$390,704246Includes 40 High Wind records and 45 Strong Wind records, event types the NRI definition of this hazard leaves out.
6Heat WaveRelatively LowRelatively Lowunder $1$37,686$342,908$380,5948
7LightningRelatively LowRelatively Moderate$29,867$315,455$345,3224
8TornadoVery LowVery Low$96,853$514$206,735$304,1024
9Ice StormRelatively LowRelatively Low$109,132$13,142$122,2732
10Winter WeatherRelatively LowRelatively Moderate$69,495$220$24,854$94,569292
11HailVery LowVery Low$3,195$25,097$34,843$63,13589
12WildfireVery LowVery Low$9,624$35$1,082$10,7410No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events coverage of this hazard is limited; absence is not evidence of low risk.
13LandslideRelatively LowRelatively Low$4,506$4,709$9,2150Declared 3 times; no Storm Events record of this type. Storm Events coverage of this hazard is limited; absence is not evidence of low risk.
14AvalancheVery LowVery Lowunder $1$2,014$2,0150No recorded events in Storm Events since 1996 (data through 2026-06-30).
15DroughtNo RatingNo Expected Annual Losses$0$00Declared 1 time; no Storm Events record of this type.
Coastal FloodingNot ApplicableNot Applicable0NRI rates coastal flooding Not Applicable for this county, and no federal declaration for this county names it.No recorded events in Storm Events since 1996 (data through 2026-06-30).
TsunamiNot ApplicableNot Applicable0NRI rates tsunami Not Applicable for this county, and no federal declaration for this county names it.No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events coverage of this hazard is limited; absence is not evidence of low risk.
Volcanic ActivityNot ApplicableNot Applicable0NRI rates volcanic activity Not Applicable for this county, and no federal declaration for this county names it.No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events coverage of this hazard is limited; absence is not evidence of low risk.

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

Sources

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, 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)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

Check your state hazard mitigation plan's hazard list for this county; explain any hazard you drop.

Supports B1-b: location

Inherited from Addison County, county-level (county FIPS 50001); scope: whole section.

Where each hazard occurs

HazardLocationCensus tracts ratedrated of all tracts
AvalancheCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.6 of 10
Coastal FloodingCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.0 of 10
Cold WaveAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.10 of 10
DroughtAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.0 of 10
EarthquakeCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.10 of 10
HailAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.10 of 10
Heat WaveAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.10 of 10
HurricaneCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.10 of 10
Ice StormAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.10 of 10
Inland FloodingThe 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.10 of 10
LandslideCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.10 of 10
LightningAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.10 of 10
Strong WindAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.10 of 10
TornadoCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.10 of 10
TsunamiCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.0 of 10
Volcanic ActivityCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.0 of 10
WildfireCensus tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.10 of 10
Winter WeatherAffects the whole planning area; national data do not distinguish locations within the county. Confirm locally.10 of 10

Source

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, 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)

Supports B1-c: extent

Inherited from Addison County, county-level (county FIPS 50001); scope: whole section.

Extent: scale, observed range and worst recorded event per hazard

HazardScaleRecordscount, yearsObserved rangeWorst recorded eventMost damaging (when different)Where in the countyNote
Avalanchenone (count and damage)0Physical measure: in event narratives only; local data required.
Coastal Flood, Storm Surge/Tidenone in data (FIRM for depth)0Flood depth: see the FEMA Flood Insurance Rate Map.
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill28, 1997 to 2026 (28 zone-level)1 day to 28 days (median 2 days); 25 with a recorded value28 days, 2015-02-01 to 2015-02-28, from 1 monthly summary record (a monthly summary record covers most or all of a month; it does not count days at wave conditions), zone-levelZone-level records: applies countywide; national data do not locate these events within the county.Wind chill: in event narratives only; local data required.
Frost/Freeze (outside NRI Cold Wave definition)crop damage5, 2005 to 2023 (5 zone-level)Frost/Freeze, 2023-05-18, $1,500,000 crop damage, reported for the zone (2023 dollars); NWS zone VTZ009 (WESTERN ADDISON), zone-level: may include parts of neighboring countiesZone-level records: applies countywide; national data do not locate these events within the county.Temperature: in event narratives only; local data required.
DroughtUS Drought Monitor D-scale0Storm 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)0No Storm Events record; local data required (e.g., USGS).
Hailhail size (inches)104, 1965 to 20250.75 in to 2 in (median 1 in); 100 with a recorded value2 in hail, 2012-07-23; same size also recorded on 1966-07-12Hail, 2017-05-18, $50,000 property; $0 crops (2017 dollars)Event records naming places in the county (county page list): Bristol town (10 records), Lincoln town (9 records), Middlebury town (9 records), New Haven town (8 records), Bridport town (7 records), Shoreham town (7 records), Starksboro town (7 records), Addison town (4 records), Ripton town (4 records), Vergennes city (4 records); and 5 more places (see the XLSX file).
Excessive Heat, Heatheat index (narratives)8, 2006 to 2025 (8 zone-level)1 day to 6 days (median 3 days); 6 with a recorded value6 consecutive days, 2020-06-18 to 2020-06-23, zone-levelHeat, 2012-03-17, $0 property; $450,000 crops, reported for the zone (2012 dollars)Zone-level records: applies countywide; national data do not locate these events within the county.Heat index: in event narratives only; local data required. 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-Simpson0Storm Events files every zone of a storm's episode under the storm's event type and category, so a Hurricane (Typhoon) record, especially an inland or remnant one, does not by itself mean hurricane-force winds here; read the damage and wind columns.
Ice StormSperry-Piltz (local data)2, 1998 to 2013 (2 zone-level)Ice Storm, 1998-01-06, $750,000 property; crops not reported, reported for the zone (1998 dollars); NWS zone VTZ009 (ADDISON), zone-level: may include parts of neighboring countiesZone-level records: applies countywide; national data do not locate these events within the county.Ice thickness: in event narratives only; local data required.
Flash Flood, Flood, Lakeshore Flooddamage and flood days (FIRM for depth)77, 1996 to 2025 (15 zone-level)Flash Flood, 2011-08-28, $20,000,000 property; $1,000,000 crops (2011 dollars)Event records naming places in the county (county page list): Ripton town (5 records), Salisbury town (5 records), Cornwall town (4 records), Starksboro town (4 records), Addison town (3 records), Lincoln town (3 records), Middlebury town (3 records), Orwell town (3 records), Bridport town (2 records), Granville town (2 records); and 10 more places (see the XLSX file). Zone-level records (15) apply countywide.Flood depth: see the FEMA Flood Insurance Rate Map. Storm Events damage can be $0 or blank even for a major flood, so the worst record here may not be the worst flood; compare FEMA Public Assistance by declaration in B1-d.
Debris Flownone (count and damage)0Physical measure: in event narratives only; local data required.
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)4, 2003 to 2024Lightning, 2011-02-05, $100,000 property; $0 crops (2011 dollars)Event records naming places in the county (county page list): Addison town (1 record), Bristol town (1 record), New Haven town (1 record).Storm Events lists lightning with damage or casualties; physical measure in event narratives only; local data required.
High Wind and Strong Wind (outside NRI Strong Wind definition)wind speed (kt and mph)85, 1996 to 2025 (84 zone-level)30 kt (35 mph) to 74 kt (85 mph) (median 43 kt (49 mph)); 81 with a recorded value74 kt (85 mph) estimated gust, High Wind, 2009-12-09; NWS zone VTZ018 (EASTERN ADDISON), zone-level: may include parts of neighboring countiesHigh Wind, 2010-12-01, $250,000 property; $0 crops, reported for the zone (2010 dollars)No event record names a listed place in the county. Zone-level records (84) apply countywide.
Thunderstorm Windwind speed (kt and mph)204, 1959 to 202643 kt (49 mph) to 80 kt (92 mph) (median 50 kt (58 mph)); 151 with a recorded value80 kt (92 mph) estimated gust, Thunderstorm Wind, 2003-07-24; same speed and measurement basis also recorded on 2003-07-24Thunderstorm Wind, 1993-08-24, $500,000 property; crops not recorded (1993 dollars)Event records naming places in the county (county page list): Middlebury town (27 records), New Haven town (17 records), Monkton town (11 records), Orwell town (11 records), Bridport town (9 records), Bristol town (9 records), Cornwall town (9 records), Addison town (8 records), Granville town (7 records), Lincoln town (7 records); and 10 more places (see the XLSX file).
TornadoEnhanced Fujita (F before Feb 2007)5, 1965 to 2026F/EF0 to F/EF1 (median F/EF1); 5 with a recorded valueEF1 tornado, 2021-03-26, 0.65 mi within this county, 75 yd wide, $75,000 property; $0 crops (2021 dollars), 2 direct injuriesEvent records naming places in the county (county page list): Addison town (1 record), Lincoln town (1 record), Middlebury town (1 record), Vergennes city (1 record).From 1996 on, tornado records are per-county segments and length is the path length within this county (NWS Instruction 10-1605); records before 1996 may give the whole path length, including the path outside this county, and before 1996 a tornado is listed once, under the county where it began, with the whole path's rating; counties farther along the path may not list it. Length is not used to rank tornadoes.
Tsunaminone (count and damage)0Physical measure: in event narratives only; local data required.
Volcanic Ash, Volcanic AshfallVolcanic Explosivity Index (local data)0Physical measure: in event narratives only; local data required.
Wildfireacres burned (local data)0Acres burned: in event narratives only; local data required.
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall local)292, 1996 to 2026 (292 zone-level)Heavy Snow, 2007-02-14, $300,000 property; $0 crops, reported for the zone (2007 dollars); NWS zone VTZ009 (WESTERN ADDISON), zone-level: may include parts of neighboring countiesZone-level records: applies countywide; national data do not locate these events within the county.Snow depth: in event narratives only; local data required.

Where a hazard names more than 10 member places, the table lists the 10 with the most records; every place is in the XLSX file, sheet "B1-c Extent".

Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records are placed with NWS zone-county files, which exist from 2020 on; an earlier record is placed by its zone number in the nearest later file only when its zone name matches that file, records from zones NWS renumbered are placed by name or left out, and a record whose zone is in no known file is left out of every count, so counts before 2020 can be low. Some current zones are also missing from the NWS files, so recent counts can be low too.

Dollars are nominal (as reported), labeled with the year; not adjusted for inflation.

Sources

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-28, https://www.weather.gov/gis/ZoneCounty

Supports B1-d: previous occurrences

Inherited from Addison County, county-level (county FIPS 50001); scope: declarations, statewide block and Storm Events history.

Declaration rows
30
Counted incidents
26

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

Federal disaster declarations for this county

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsFlagsNotes
2024-08-202024-07-09DR-4810-VTMajor disasterSEVERE STORM, FLOODING, LANDSLIDES, AND MUDSLIDESInland Flooding; Landslide$2,157,397.96within last 5 years
2024-08-082024-08-08EM-3609-VTEmergencyTROPICAL DEPRESSION DEBBYHurricanenone foundwithin last 5 years
2023-10-062023-08-03DR-4744-VTMajor disasterSEVERE STORMS AND FLOODINGInland Flooding$3,304,006.47within last 5 years
2023-07-142023-07-07DR-4720-VTMajor disasterSEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDESInland Flooding (primary); also designated: Landslide$1,019,469.14within last 5 years
2023-07-102023-07-09EM-3595-VTEmergencyFLOODINGInland Floodingnone foundwithin last 5 yearssame incident as DR-4720
2021-08-222021-08-22EM-3567-VTEmergencyTROPICAL STORM HENRIHurricanenone found
2020-04-082020-01-20DR-4532-VTMajor disasterCOVID-19 PANDEMICNon-natural, not counted$2,359,502.08
2020-03-132020-01-20EM-3437-VTEmergencyCOVID-19Non-natural, not countednone foundsame incident as DR-4532
2020-01-172019-10-31DR-4474-VTMajor disasterSEVERE STORM AND FLOODINGInland Flooding$3,343,151.90
2018-01-022017-10-29DR-4356-VTMajor disasterSEVERE STORM AND FLOODINGInland Flooding$69,643.10
2017-08-162017-06-29DR-4330-VTMajor disasterSEVERE STORMS AND FLOODINGInland Flooding$651,505.32
2015-07-292015-06-09DR-4232-VTMajor disasterSEVERE STORM AND FLOODINGInland Flooding$715,977.08
2015-02-032014-12-09DR-4207-VTMajor disasterSEVERE WINTER STORMWinter Weather$146,185.18
2012-06-222012-05-29DR-4066-VTMajor disasterSEVERE STORM, TORNADO, AND FLOODINGInland Flooding; Tornado$129,635.79
2011-09-012011-08-27DR-4022-VTMajor disasterTROPICAL STORM IRENEHurricane$3,623,137.95
2011-08-292011-08-26EM-3338-VTEmergencyHURRICANE IRENEHurricanenone foundsame incident as DR-4022
2011-06-152011-04-23DR-1995-VTMajor disasterSEVERE STORMS AND FLOODINGInland Flooding$288,312.48
2008-09-122008-07-21DR-1790-VTMajor disasterSEVERE STORMS AND FLOODINGInland Flooding$1,901,402.23
2008-07-152008-06-14DR-1778-VTMajor disasterSEVERE STORMS AND FLOODINGInland Flooding$835,886.80
2004-09-232004-08-12DR-1559-VTMajor disasterSEVERE STORMS AND FLOODINGInland Flooding$365,664.86
2001-04-102001-03-05EM-3167-VTEmergencySNOWWinter Weather$104,956.60
2000-07-272000-07-14DR-1336-VTMajor disasterSEVERE STORMS AND FLOODINGInland Flooding$560,588.10
1998-06-301998-06-17DR-1228-VTMajor disasterSEVERE STORMS AND FLOODINGInland Floodingnone found
1998-01-151998-01-06DR-1201-VTMajor disasterSEVERE ICE STORMS, RAIN, HIGH WINDS AND FLOODINGIce Storm; Inland Flooding; Strong Windnone found
1996-02-131996-01-19DR-1101-VTMajor disasterICE JAMS AND FLOODINGInland Flooding (primary); also designated: Winter Weathernone found
1993-05-121993-04-24DR-990-VTMajor disasterHEAVY RAIN, SNOWMELT & FLOODINGInland Floodingnone found
1989-09-111989-08-04DR-840-VTMajor disasterSEVERE STORMS & FLOODINGInland Floodingnone found
1977-09-061977-09-06EM-3053-VTEmergencyDROUGHTDroughtnone found
1976-08-051976-08-05DR-518-VTMajor disasterSEVERE STORMS, HIGH WINDS & FLOODINGInland Flooding (primary); also designated: Strong Windnone found
1973-07-061973-07-06DR-397-VTMajor disasterSEVERE STORMS, FLOODING, & LANDSLIDESInland Flooding (primary); also designated: Landslidenone found

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.

Dollars are nominal (as reported), labeled with the year; not adjusted for inflation.

The County Public Assistance column is the whole county's, including any state agencies FEMA files there; this town's own matched Public Assistance is in the per-member block (B1-f).

Statewide declarations

DeclaredIncident beganFEMA numberTypeTitleMapped hazardFlagsNotes
1964-03-171964-03-17DR-164-VTMajor disasterFLOODINGInland Flooding
1963-11-271963-11-27DR-160-VTMajor disasterDROUGHT & IMPENDING FREEZEDrought

FEMA recorded these with designated area Statewide and no county. Listed on every county page in the state; not counted with county rows.

Source

FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-27T010817Z, pulled 2026-09-28, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)

Previous occurrences by hazard, with explicit no-event rows

HazardStorm Events recordsfull periodSince plan approvalrecordsDuring plan reviewrecordsLast 5 yearsrecordsDeclared incidentsdistinct incidentsDeclared since approvaldistinct incidentsPeriodStatement
Avalanche0001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Coastal Flooding0001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Cold Wave331001996 to 2026-06-30Includes 5 Frost/Freeze records, event types the NRI definition of this hazard leaves out.
Drought0011996 to 2026-06-30No Storm Events records of this type; 1 federal declared incident (see declarations table)
Earthquake000No Storm Events record; local data required (e.g., USGS).
Hail104401955 to 2026-06-30
Heat Wave8101996 to 2026-06-30
Hurricane0031996 to 2026-06-30No Storm Events records of this type; 3 federal declared incidents (see declarations table)
Ice Storm2011996 to 2026-06-30
Inland Flooding778201996 to 2026-06-30
Landslide0031996 to 2026-06-30No Storm Events records of this type; 3 federal declared incidents (see declarations table)
Lightning4101996 to 2026-06-30
Strong Wind2894321955 to 2026-06-30Includes 40 High Wind records and 45 Strong Wind records, event types the NRI definition of this hazard leaves out.
Tornado5311950 to 2026-06-30
Tsunami0001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Volcanic Activity0001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Wildfire0001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Winter Weather2924831996 to 2026-06-30

Sources

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-27T010817Z, pulled 2026-09-28, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)

NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-28, https://www.weather.gov/gis/ZoneCounty

Notable Storm Events records

DateEvent typeMagnitude or extentDamagenominal dollarsDirect deaths, injuriesindirect not countedLocationFlagsWhy listed
2023-07-13Thunderstorm Wind74 kt (85 mph) estimated gust$50,000 property; $0 crops (2023 dollars)0, 1WEST BRIDPORTwithin last 5 yearsdeaths or injuries recorded
2023-05-18Frost/Freeze$0 property; $1,500,000 crops, reported for the zone (2023 dollars)0, 0NWS zone VTZ009 (WESTERN ADDISON), zone-level: may include parts of neighboring countieswithin last 5 yearsB1-c worst recorded: Frost/Freeze (outside NRI Cold Wave definition)
2021-03-26TornadoEF1, 0.65 mi within this county, 75 yd wide$75,000 property; $0 crops (2021 dollars)0, 2MIDDLEBURYdeaths or injuries recorded
2020-06-18Heat$0 property; $0 crops, reported for the zone (2020 dollars)0, 0NWS zone VTZ009 (WESTERN ADDISON), zone-level: may include parts of neighboring countiesB1-c worst recorded: Excessive Heat, Heat
2015-02-01Cold/Wind Chill$0 property; $0 crops, reported for the zone (2015 dollars)0, 0NWS zone VTZ018 (EASTERN ADDISON), zone-level: may include parts of neighboring countiesB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2012-12-21Strong Wind43 kt (49 mph) estimated gust$25,000 property; $0 crops, reported for the zone (2012 dollars)1, 0NWS zone VTZ009 (WESTERN ADDISON), zone-level: may include parts of neighboring countiesdeaths or injuries recorded
2011-08-28Flash Flood$20,000,000 property; $1,000,000 crops (2011 dollars)0, 0FERRISBURG to MONKTON RIDGEB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2011-02-05Lightning$100,000 property; $0 crops (2011 dollars)0, 0WEST ADDISONB1-c worst recorded: Lightning
2009-12-09High Wind74 kt (85 mph) estimated gust$100,000 property; $0 crops, reported for the zone (2009 dollars)0, 0NWS zone VTZ018 (EASTERN ADDISON), zone-level: may include parts of neighboring countiesB1-c worst recorded: High Wind and Strong Wind (outside NRI Strong Wind definition)
2007-02-14Heavy Snow$300,000 property; $0 crops, reported for the zone (2007 dollars)0, 0NWS zone VTZ009 (WESTERN ADDISON), zone-level: may include parts of neighboring countiesB1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
2003-07-24Thunderstorm Wind80 kt (92 mph) estimated gust$10,000 property; crops not reported (2003 dollars)0, 0MIDDLEBURYB1-c worst recorded: Thunderstorm Wind
1998-01-06Ice Storm$750,000 property; crops not reported, reported for the zone (1998 dollars)0, 0NWS zone VTZ009 (ADDISON), zone-level: may include parts of neighboring countiesB1-c worst recorded: Ice Storm

The full list is in the XLSX file, sheet "B1-d Storm Events history" (814 rows).

Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records are placed with NWS zone-county files, which exist from 2020 on; an earlier record is placed by its zone number in the nearest later file only when its zone name matches that file, records from zones NWS renumbered are placed by name or left out, and a record whose zone is in no known file is left out of every count, so counts before 2020 can be low. Some current zones are also missing from the NWS files, so recent counts can be low too.

Sources

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-28, https://www.weather.gov/gis/ZoneCounty

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)

State-declared emergencies are not in federal data. Add them from your state emergency management agency.

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

Supports B1-e: probability

Inherited from Addison County, county-level (county FIPS 50001); scope: whole section.

Probability: FEMA annualized frequency and descriptor per hazard

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 Wave3.24event-days per yearabout 3.24 days per yearLikelyevent-days in 11 of 30 years, 1996 to 2025 (36.7%)61.12005-11-12 to 2024-11-12 (19 years)countywideNRI gives about 3.24 cold wave event-days a year here (its annualized frequency over 19 years; not its event count divided by the years), but Storm Events has a record in only 11 of 30 years. NRI counts from a different source that records far more events than Storm Events, so this descriptor reads much lower than NRI's frequency; read the two together. Frost/Freeze records are not counted in this descriptor: they record crop freezes, not cold waves.
Drought0event-days per yearnone modeledevent-days in 0 of 30 years, 1996 to 2025 (0%)02000 to 2025 (25.25 years; D3 and D4 only)countywideNo recorded event-days, 1996 to 2025; descriptor not assigned
Earthquake0.00241annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.241%not shownmodeledsee B1-fDescriptor not assigned: the NRI value is the chance at a location in the county, not how often the hazard affects the county, and Storm Events does not record earthquakes.
Hail1.38events per yearabout 1.38 per yearHighly likelyFEMA annualized frequency (modeled)52.4 (modeled)1986 to 2023 (38 years)countywide
Heat Wave2.19event-days per yearabout 2.19 days per yearLikelyevent-days in 6 of 30 years, 1996 to 2025 (20%)37.92005-11-12 to 2024-11-12 (19 years)countywideNRI gives about 2.19 heat wave event-days a year here (its annualized frequency over 19 years; not its event count divided by the years), but Storm Events has a record in only 6 of 30 years. NRI counts from a different source that records far more events than Storm Events, so this descriptor reads much lower than NRI's frequency; read the two together.
Hurricane0.0355events per yearabout 1 in 28 yearsPossibleFEMA annualized frequency (modeled)101851 to 2024 (Atlantic)see B1-fNRI counts hurricane and tropical storm tracks passing within storm-force wind range; federal declarations are counted separately in B1-d and need not match.
Ice Storm0.325event-days per yearabout 0.325 days per yearPossibleevent-days in 2 of 30 years, 1996 to 2025 (6.67%)221946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding2.21event-days per yearabout 2.21 days per yearHighly likelyevent-days in 28 of 30 years, 1996 to 2025 (93.3%)621996 to 2023 (28 years)see B1-f
Landslide0.853events per year (modeled)about 0.85 per yearLikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning22.9days per year with a strikeabout 22.9 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind0.945events per yearabout 0.94 per yearLikelyFEMA annualized frequency (modeled)361986 to 2023 (38 years)countywide
Tornado0.0545events per yearabout 1 in 18 yearsPossibleFEMA 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)not shownmodeledsee B1-fNot Applicable in NRI for this county; no descriptor.
Volcanic Activityannual probabilitynot shownmodeledsee B1-fNot Applicable in NRI for this county; no descriptor.
Wildfire0.0000964annual probability at a locationchance a given location in the county burns in a year: 0.00964%Storm Events records in 0 of 30 years, 1996 to 2025 (0%)not shownmodeledsee B1-fNo Storm Events record of this hazard, 1996 to 2025; descriptor not assigned (the NRI value is the chance at a location in the county, not how often the hazard affects the county)
Winter Weather17.7event-days per yearabout 17.7 days per yearHighly likelyevent-days in 30 of 30 years, 1996 to 2025 (100%)3352005-11-12 to 2024-11-12 (19 years)countywide

FEMA annualized frequency (modeled) comes from the National Risk Index v1.20 (December 2025). It is not recorded events divided by years, and what it measures depends on the hazard. For most hazards it estimates how often the hazard affects this county each year: it counts events or event-days (drought, heat wave, cold wave, winter weather, ice storm and inland flooding are in days per year; lightning is the number of days per year with a recorded cloud-to-ground strike, from the NOAA Storm Prediction Center daily lightning climatology); it may count events in the surrounding area (hail, strong wind, tornado, hurricane and ice storm use a 49 km grid and buffers) and is averaged over the county's area; and some hazards use a minimum value for places with no recorded event. Earthquake, wildfire and coastal flooding are different: FEMA computes them for each census block and averages them over the county, so the value is the chance (for coastal flooding, the modeled number of floods per year) at a location in the county, which is lower than the chance that the hazard strikes somewhere in the county. Earthquake is the chance of at least minor-damage shaking (U.S. Geological Survey model); wildfire is the chance that a location burns in a large fire (U.S. Forest Service burn probability); coastal flooding comes from FEMA flood zones and NOAA high-tide flooding, so it can be above 1 where high-tide flooding is frequent. Tsunami is the value at the county's most exposed location, from recorded events and modeled return periods. For these four hazards the packet gives no "1 in N years" and takes the descriptor from Storm Events (none for earthquake) unless the value is 1 or more a year. Landslide is a U.S. Geological Survey modeled county rate spread by slope susceptibility. Volcanic activity is the chance that a volcano affecting the county erupts in a year. Drought counts only extreme and exceptional drought (D3 and D4). Source: FEMA, National Risk Index Technical Documentation v1.20, sections 5.2.2 (Table 5), 5.2.3, 7.4, 10.4, 16.5, 17.1, 17.3.1, 17.5, 20.3.1, 21.4, 22.4 and 6 to 23.

Sources

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, 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)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

Descriptor scale used in this packet (defined per unit)

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

Sources

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, 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)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

Intensity bands: historical frequency (Storm Events)

HazardBandYearsEventscounty-coded recordsYears in periodEvents per yearevents / years
Hail1.00-1.99 in1996 to 202549301.63
Hail2.00 in+1996 to 20251300.0333
Strong Wind (Thunderstorm Wind records)50-64 kt1996 to 2025139304.63
Strong Wind (Thunderstorm Wind records)65 kt+1996 to 20256300.2
Strong Wind (Thunderstorm Wind records)unmeasured or below 50 kt1996 to 202513300.433
TornadoEF0-11996 to 20253300.1
TornadoEF2-31996 to 20250300
TornadoEF4-51996 to 20250300
Tornadounrated (EFU)1996 to 20250300

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.

Source

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

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.

Supports B1-f: variation across the planning area

Range of census tract risk within the county

HazardTractsrated of allRisk score minNRI score, 0 to 100MedianMaxTracts by ratingNote
Avalanche6 of 1052.253.053.4Very Low 6, Not Applicable 4
Coastal Flooding0 of 10Not Applicable 10
Cold Wave10 of 1039.157.372.1Relatively Moderate 7, Relatively Low 3National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Drought0 of 10No Rating 10National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Earthquake10 of 1043.852.571.3Relatively Low 10
Hail10 of 1032.340.366.6Relatively Low 8, Very Low 2National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Heat Wave10 of 108.338.672.6Relatively Moderate 3, Relatively Low 5, Very Low 2National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Hurricane10 of 1056.566.481.1Relatively Moderate 1, Relatively Low 9
Ice Storm10 of 1057.768.684.5Relatively Moderate 5, Relatively Low 5National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Inland Flooding10 of 1022.663.483.2Relatively High 1, Relatively Moderate 6, Relatively Low 3
Landslide10 of 1040.087.396.6Relatively Moderate 1, Relatively Low 6, Very Low 3
Lightning10 of 1061.281.993.2Relatively High 6, Relatively Moderate 4National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Strong Wind10 of 1052.969.084.0Relatively High 1, Relatively Moderate 8, Relatively Low 1National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.
Tornado10 of 1025.734.548.3Relatively Low 8, Very Low 2
Tsunami0 of 10Not Applicable 10
Volcanic Activity0 of 10Not Applicable 10
Wildfire10 of 1056.564.074.1Relatively Low 3, Very Low 7
Winter Weather10 of 1062.479.287.7Relatively High 6, Relatively Moderate 4National data give a county-wide or coarse (49 km grid or NWS zone) frequency for this hazard, so they cannot show members' hazard differing. The tract range above mostly reflects where buildings and people are. Confirm locally.

County tracts, shown for context: this town's planning area is the town, which the county tracts do not split out.

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.

Source

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, 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)

Per-member block (Starter, confirm locally)

MemberTypePlan statusRepetitive lossFMA RL and SRL (44 CFR 77.2); repeat-flood, any definitionPublic Assistance matchedfederal share obligated, nominal dollarsEvent records naming this placeall years; since the member's planNotes
No rows for this unit.

No plan row in FEMA data, so no NFIP community ID or Public Assistance applicant match is available for this town.

School districts and special districts get a plan clock row only.

Sources

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)

FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)

FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-26T151157Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

Supports B2-a and B2-b: assets and impacts

Inherited from Addison County, county-level (county FIPS 50001); scope: NRI exposure and expected annual loss; since-plan figures use the town's own approval date.

Local data required

County-level starter. The plan must describe impacts for each participant and its own assets.

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

  • Critical facilities and lifelines per hazard
  • A problem statement per participant per hazard
  • Changes in development in hazard-prone areas since the last approval, or a statement of none (E1-a)
  • Future assets

Addison County, county-level

HazardBuilding exposuremodeled dollarsAgriculture exposuremodeled dollarsPopulation exposedpeopleEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearEAL population equivalencestatistical value of life and injury, $13.7M per life, 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$1,016,064under 1under $1$2,014under 0.0001%
Coastal FloodingNot Applicable in NRI for this county
Cold Wave$11,124,310,582$223,345,64337,314$197$102,611$614,167under 0.0001%
Drought$0$0agriculture exposure is 0 in NRI
Earthquake$18,931,200,21837,363$419,010$55,0180.00221%
Hail$11,124,310,582$223,345,64337,314$3,195$25,097$34,843under 0.0001%
Heat Wave$11,124,310,582$223,345,64337,314under $1$37,686$342,908under 0.0001%
Hurricane$11,124,310,582$223,193,64837,314$450,074$134,535$10,6330.00405%
Ice Storm$11,124,139,99337,313$109,132$13,1420.000981%
Inland Flooding$11,099,493,966$11,829,128656$7,702,083$38,650$36,679n/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. EAL as % of exposure: n/a.
Landslide$485,800,4121,736$4,506$4,7090.000927%
Lightning$11,124,310,58237,314$29,867$315,4550.000268%
Strong Wind$11,124,310,582$223,345,64337,314$181,296$8,380$201,0280.00163%
Tornado$11,124,310,582$223,345,64337,314$96,853$514$206,7350.000871%
TsunamiNot Applicable in NRI for this county
Volcanic ActivityNot Applicable in NRI for this county
Wildfire$1,800,275,939$48,956,2828,577$9,624$35$1,0820.000535%
Winter Weather$11,124,310,582$223,345,64337,314$69,495$220$24,8540.000625%

Every dollar figure in this table is for the whole county; only the since-plan date is the town's own approval date.

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

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

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 must not be added up; the unit total counts each declaration once.

Dollars are nominal (as reported), labeled with the year; not adjusted for inflation.

Sources

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, 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)

NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-28, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/

NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-28, https://www.weather.gov/gis/ZoneCounty

FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-27T010817Z, pulled 2026-09-28, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)

FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-26T151157Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)

Vermont Flood Ready Atlas and ANR river corridors for town flood and erosion locations.

ERAF Flood Hazard Summary gives E911 building counts in the SFHA per town.

Vermont Dam Inventory for dams in and upstream of the town.

VEM hazard mitigation planning resources and the 2023 Vermont State Hazard Mitigation Plan. https://vem.vermont.gov/hm-planning-resources

Supports B2-a: context

Inherited from Addison County, county-level (county FIPS 50001); scope: whole section.

County context

MeasureValue
Population37,314
Building value (total, not at risk)$11,124,310,582
Agriculture value (total, not at risk)$223,345,643
NRI risk rating (all hazards)Very Low
Expected annual loss, buildings and agriculture, all hazards$9,423,060
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)$1,863,266
Social vulnerability ratingVery Low
Community resilience ratingVery High
NRI versionDecember 2025

FEMA's all-hazard expected annual loss total adds buildings, agriculture and population equivalence; the two parts are shown separately so the property figure is not read as including the statistical value of life.

Source

FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-28, 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)

Supports B2-c: repetitive loss

Addison County, county-level

DefinitionPropertiesSevere repetitive lossProperties
Repetitive loss, FMA definition (44 CFR 77.2)1Severe repetitive loss, FMA definition (44 CFR 77.2)2
Repetitive loss, NFIP insurance definition3Severe repetitive loss, NFIP insurance definition0

Your state NFIP coordinator's list may use the NFIP insurance definition, so its counts can be higher.

Repeat-flood properties: county total and NFIP communities

ScopeRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
County total1230502
GRANVILLE, TOWN OF1200200
HANCOCK, TOWN OF0010101
NEW HAVEN, TOWN OF0010101
STARKSBORO, TOWN OF0010100

County repeat-flood properties by occupancy group

Occupancy groupRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
single-family residential1220401
2 to 4 unit residential0000000
other residential0000000
non-residential0010101
not reported0000000

Institutional properties cannot be separated in this data: FEMA's occupancy groups have no institutional class, so they fall 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; OpenFEMA's fmaRl field description omits the Increased Cost of Compliance clause of 44 CFR 77.2(i). NFIP repetitive loss (FEMA insurance definition, nfipRl) is 2 or more claims over $1,000 in 10 years and can drop to false when a property is mitigated. Also shown: NFIP severe repetitive loss, any category, mitigated and currently insured.

Your state NFIP coordinator's list may use the NFIP insurance definition, so its counts can be higher.

Counts are aggregates of FEMA's public NFIP Multiple Loss Properties file (as of 2026-08-02). No property is identified. County assignment is FEMA's geocode.

Counts may differ from your state NFIP coordinator's list, which is the source the Handbook names.

In this county 1 property is FMA repetitive loss but not NFIP repetitive loss, and 3 properties are NFIP repetitive loss but not FMA repetitive loss.

Exact counts; no count suppression.

Sources

Every table above lists its own sources. The full list, for the plan's bibliography (FEMA review item A4-a):

  1. FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-26T121003Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)
  2. FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-27T010817Z, pulled 2026-09-28, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)
  3. FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-26T151157Z, pulled 2026-09-28, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)
  4. FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-28, 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 2026-09-28, 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 2026-09-28, 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 2026-09-28, 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 2026-09-28, 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

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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.

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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). Weybridge town, VT: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-28; Vermont town 5000183275). Preview: automated baseline. 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: to be added

Hazard Plain release 2026-10. As of 2026-09-28; Storm Events data through 2026-06-30. File hazard-plain_2026-10_VT_5000183275. Preview: automated baseline.