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 ($34,098,161 a year), Hurricane ($4,498,593) and Tornado ($1,908,557).
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: 27 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
| Jurisdiction | Type | Status | Plan | Approved | Expires | Days to expirynegative = days since expiry |
|---|---|---|---|---|---|---|
| Concord city | City | Approved, expires 2029-05-05 | Hazard Mitigation Plan Update 2023, City of Concord, New Hampshire (FEMA plan 108844) | 2024-05-06 | 2029-05-05 | 948 |
| Franklin city | City | Approved, expires 2029-06-09 | City of Franklin, NH Hazard Mitigation Plan Update 2023 (FEMA plan 109344) | 2024-06-10 | 2029-06-09 | 983 |
| Allenstown town | Town | Expired on 2026-03-09 | Town of Allenstown New Hampshire Hazard Mitigation Plan Update 2021 (FEMA plan 107290) | 2021-03-10 | 2026-03-09 | -205 |
| Andover town | Town | Approved, expires 2030-07-28 | Town of Andover, New Hampshire Hazard Mitigation Plan Update, 2025 (FEMA plan 110908) | 2025-07-29 | 2030-07-28 | 1,397 |
| Boscawen town | Town | Approved, expires 2030-10-13 | Town of Boscawen New Hampshire, Hazard Mitigation Plan Update 2025 (FEMA plan 111182) | 2025-10-14 | 2030-10-13 | 1,474 |
| Bow town | Town | Approved, expires 2030-02-09 | Town of Bow, New Hampshire Hazard Mitigation Plan Update 2018 (FEMA plan 110214) | 2025-02-10 | 2030-02-09 | 1,228 |
| Bradford town | Town | Approved, expires 2030-07-20 | Town of Bradford, New Hampshire Hazard Mitigation Plan Update 2025 (FEMA plan 110932) | 2025-07-21 | 2030-07-20 | 1,389 |
| Canterbury town | Town | Approved, expires 2028-04-17 | Hazard Mitigation Plan Update 2022, Town of Canterbury, New Hampshire (FEMA plan 108846) | 2023-04-18 | 2028-04-17 | 565 |
| Chichester town | Town | Approved, expires 2030-12-14 | Chichester, New Hampshire Hazard Mitigation Plan Update 2025 (FEMA plan 111183) | 2025-12-15 | 2030-12-14 | 1,536 |
| Danbury town | Town | Expired on 2026-07-28 | Town of Danbury Hazard Mitigation Plan Update 2021 (FEMA plan 107646) | 2021-07-29 | 2026-07-28 | -64 |
| Dunbarton town | Town | Approved, expires 2028-04-17 | Town of Dunbarton, N.H. Hazard Mitigation Plan Update (FEMA plan 108838) | 2023-04-18 | 2028-04-17 | 565 |
| Epsom town | Town | Approved, expires 2029-10-22 | Town of Epsom, New Hampshire Hazard Mitigation Plan Update 2024 (FEMA plan 109950) | 2024-10-23 | 2029-10-22 | 1,118 |
| Henniker town | Town | Approved, expires 2030-06-22 | Town of Henniker New Hampshire Hazard Mitigation Plan Update 2025 (FEMA plan 110787) | 2025-06-23 | 2030-06-22 | 1,361 |
| Hill town | Town | Expired on 2026-01-26 | Town of Hill New Hampshire Hazard Mitigation Plan Update 2020 (FEMA plan 107156) | 2021-01-27 | 2026-01-26 | -247 |
| Hooksett town | Town | Approved, expires 2027-04-28 | Town of Hooksett New Hampshire Hazard Mitigation Plan 2022 (FEMA plan 108275) | 2022-04-29 | 2027-04-28 | 210 |
| Hopkinton town | Town | Approved, expires 2029-09-15 | Town of Hopkinton, New Hampshire Hazard Mitigation Plan Update 2024 (FEMA plan 109895) | 2024-09-16 | 2029-09-15 | 1,081 |
| Loudon town | Town | Approved, expires 2028-04-17 | Hazard Mitigation Plan Update 2022, Town of Loudon, New Hampshire (FEMA plan 108855) | 2023-04-18 | 2028-04-17 | 565 |
| New London town | Town | Approved, expires 2030-11-17 | Town of New London, New Hampshire Hazard Mitigation Plan Update 2025 (FEMA plan 111156) | 2025-11-18 | 2030-11-17 | 1,509 |
| Newbury town | Town | Approved, expires 2029-07-17 | Town of Newbury, New Hampshire Hazard Mitigation Plan Update 2024 (FEMA plan 109018) | 2024-07-18 | 2029-07-17 | 1,021 |
| Northfield town | Town | Expired on 2024-08-29 | Town of Northfield New Hampshire Hazard Mitigation Plan Update 2019 (FEMA plan 105967) | 2019-08-30 | 2024-08-29 | -762 |
| Pembroke town | Town | Approved, expires 2027-02-24 | Hazard Mitigation Plan Update 2022, Town of Pembroke, New Hampshire (FEMA plan 108133) | 2022-02-25 | 2027-02-24 | 147 |
| Pittsfield town | Town | Approved, expires 2028-04-17 | Hazard Mitigation Plan Update 2023, Town of Pittsfield, New Hampshire (FEMA plan 108893) | 2023-04-18 | 2028-04-17 | 565 |
| Salisbury town | Town | Approved, expires 2030-07-09 | Town of Salisbury New Hampshire Hazard Mitigation Plan Update 2025 (FEMA plan 110935) | 2025-07-10 | 2030-07-09 | 1,378 |
| Sutton town | Town | Approved, expires 2030-07-24 | Town of Sutton New Hampshire Hazard Mitigation Plan Update 2025 (FEMA plan 110992) | 2025-07-25 | 2030-07-24 | 1,393 |
| Warner town | Town | Approved, expires 2029-12-18 | Town of Warner New Hampshire Hazard Mitigation Plan Update 2024 (FEMA plan 110265) | 2024-12-19 | 2029-12-18 | 1,175 |
| Webster town | Town | Approved, expires 2031-02-04 | Town of Webster, New Hampshire Hazard Mitigation Plan Update 2025 (FEMA plan 111462) | 2026-02-05 | 2031-02-04 | 1,588 |
| Wilmot town | Town | Approved, expires 2030-05-18 | Town of Wilmot, NH Hazard Mitigation Plan Update 2025 (FEMA plan 110575) | 2025-05-19 | 2030-05-18 | 1,326 |
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 EAL | Hazard | NRI risk rating | EAL rating | EAL buildingsmodeled dollars per year | EAL agriculturemodeled dollars per year | Cost of expected deaths and injuriesFEMA's dollar value per year, not property damage | EAL total (see note)modeled dollars per year | Storm Events records, 1996 to 2026-06-30count | Storm Events coverage note |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Inland Flooding | Relatively Moderate | Relatively Moderate | $33,690,402 | $339,084 | $68,675 | $34,098,161 | 111 | |
| 2 | Hurricane | Relatively Moderate | Relatively Moderate | $4,129,582 | $201,014 | $167,997 | $4,498,593 | 2 | |
| 3 | Tornado | Relatively Low | Relatively Low | $773,959 | $521 | $1,134,076 | $1,908,557 | 4 | |
| 4 | Earthquake | Relatively Low | Relatively Low | $1,295,236 | n/a | $248,730 | $1,543,966 | Storm Events does not record earthquakes. | |
| 5 | Lightning | Relatively High | Relatively High | $268,392 | n/a | $1,149,860 | $1,418,252 | 20 | |
| 6 | Cold Wave | Relatively Low | Relatively Moderate | $258 | $7,725 | $1,362,944 | $1,370,927 | 22 | Includes 1 Frost/Freeze record (outside NRI's Cold Wave definition; counted in this table and in B1-d, not in the B1-e descriptor). |
| 7 | Heat Wave | Relatively Low | Relatively Low | $1 | $25,141 | $1,154,228 | $1,179,370 | 3 | |
| 8 | Ice Storm | Relatively High | Relatively High | $1,037,146 | n/a | $109,674 | $1,146,820 | 3 | |
| 9 | Strong Wind | Relatively Moderate | Relatively Moderate | $110,756 | $1,351 | $636,071 | $748,178 | 250 | Includes 18 High Wind and 31 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition). |
| 10 | Drought | Relatively Low | Relatively Low | n/a | $329,315 | n/a | $329,315 | 21 | |
| 11 | Winter Weather | Relatively Moderate | Relatively High | $96,946 | $32 | $171,497 | $268,476 | 184 | |
| 12 | Hail | Relatively Low | Relatively Low | $12,614 | $5,259 | $184,251 | $202,124 | 96 | |
| 13 | Wildfire | Very Low | Very Low | $21,385 | $4 | $2,969 | $24,357 | 0 | No recorded events in Storm Events since 1996 (data through 2026-06-30). |
| 14 | Landslide | Relatively Low | Relatively Low | $15,631 | n/a | $6,989 | $22,620 | 0 | No recorded events in Storm Events since 1996 (data through 2026-06-30). |
| 15 | Avalanche | Very Low | Very Low | $0 | n/a | $119 | $119 | 0 | No recorded events in Storm Events since 1996 (data through 2026-06-30). |
Total = buildings + agriculture + population equivalence; FEMA values each expected death (or 10 injuries) at $13.7 million (2024 dollars).
NRI risk rating combines expected annual loss with social vulnerability and community resilience; EAL rating rates expected annual loss alone. Both compare this county with all U.S. counties.
Local data needed: state and local wildfire and landslide records (Storm Events records these hazards only in part).
Not applicable to this county per NRI, with no federal declaration and no Storm Events record since 1996: coastal flooding, tsunami and volcanic activity. That is the evidence for leaving them out of the plan.
The state hazard mitigation plan also lists hazards for this county; FEMA asks the plan to explain any hazard it leaves out.
Supports FEMA checklist item B1-b: hazard location
Affects the whole county (national data give no location within it): Cold Wave, Drought, Hail, Heat Wave, Ice Storm, Lightning, Strong Wind and Winter Weather.
Inland Flooding: The FEMA Flood Insurance Rate Map (FIRM) is the required location source for flooding. See the FEMA Flood Map Service Center (https://msc.fema.gov) for this county.
Hazards that vary within the county: highest-rated census tracts
Source: 5
| Hazard | Highest-rated census tractsNRI risk rating, score 0 to 100 |
|---|---|
| Avalanche | tract 385 (Very Low, 17.8); tract 405.01 (Very Low, 17.1); tract 415 (Very Low, 16.8) |
| Earthquake | tract 329 (Relatively Low, 77.1); tract 441 (Relatively Low, 76.6); tract 325 (Relatively Low, 72.3) |
| Hurricane | tract 325 (Relatively Moderate, 85.4); tract 31 (Relatively Moderate, 84.2); tract 390 (Relatively Moderate, 83.9) |
| Landslide | tract 405.02 (Relatively Moderate, 96.6); tract 415 (Relatively Moderate, 96.4); tract 385 (Relatively Moderate, 95.8) |
| Tornado | tract 400 (Relatively Moderate, 60.7); tract 325 (Relatively Moderate, 58.3); tract 390 (Relatively Moderate, 57.8) |
| Wildfire | tract 310.01 (Relatively Low, 73.7); tract 300 (Relatively Low, 72.7); tract 390 (Relatively Low, 70.1) |
Up to 3 census tracts per hazard, highest National Risk Index rating first, then highest score; a tract number is the Census tract number (for example 385 is Census Tract 385). 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
| Hazard | Scale | Recordscount and years | Observed range | Worst recorded event | Most damaging (when different) | How it applies to jurisdictions | Note |
|---|---|---|---|---|---|---|---|
| Avalanche | none (count and damage only) | 0 | |||||
| Cold/Wind Chill, Extreme Cold/Wind Chill | wind chill | 21 records, 1998 to 2023 (21 zone-level) | 1 day to 6 days (median 2 days); 18 with a recorded value | 6 consecutive days, 2000-01-13 to 2000-01-18, zone-level | Countywide (zone-level records). | ||
| Frost/Freeze (outside NRI's Cold Wave definition) | crop damage | 1 record, 2023 (1 zone-level) | No crop damage reported in 1 record. | Countywide (zone-level records). | |||
| Drought | U.S. Drought Monitor scale (D0 to D4) | 21 records, 1999 to 2026 (21 zone-level) | 26 days to 212 days (median 61.5 days); 8 with a recorded value | 212 days (7 months), 2025-11-01 to 2026-05-31, a run of 7 consecutive Storm Events drought records, zone-level | Drought, 2020-11-01, $20,000 property; $9,000,000 crops (zone total, 2020 dollars) | Countywide (zone-level records). | Storm Events enters a drought at D2 or worse east of the Rockies and D3 or worse from the Rockies west (NWS Instruction 10-1605); NRI drought counts D3 and D4 only. |
| Earthquake | Modified Mercalli (local data) | 0 | Storm Events does not record earthquakes; the USGS earthquake catalog is the source. | ||||
| Hail | hail size (inches) | 101 records, 1962 to 2026 | 0.75 in to 2 in (median 1 in); 101 with a recorded value | 2 in hail, 2026-06-26; same size also recorded on 2007-07-09 | Hail, 2025-07-20, $100 property; $0 crops (2025 dollars) | Event records naming jurisdictions in the plan: Concord city (13 records), Franklin city (6 records), Henniker town (5 records), Canterbury town (4 records), Danbury town (4 records), Dunbarton town (4 records), Hopkinton town (4 records), Allenstown town (3 records), Andover town (3 records), Epsom town (3 records); and 10 more jurisdictions (see the Excel file). | |
| Excessive Heat, Heat | heat index (in event narratives) | 3 records, 1998 to 2024 (3 zone-level) | 2 days; 1 with a recorded value | 2 consecutive days, 2024-06-19 to 2024-06-20, zone-level | Countywide (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 Depression | Saffir-Simpson | 2 records, 2011 to 2020 (2 zone-level) | Strongest recorded: Tropical Storm record, 2020-08-04, $5,000 property; crops not reported (2020 dollars); NWS zone NHZ008 | Countywide (zone-level records). | Storm Events files every zone of a storm's episode under the storm's type; flooding from the storm is filed as Flood or Flash Flood records. | ||
| Ice Storm | Sperry-Piltz ice scale (local data) | 3 records, 1998 to 2008 (3 zone-level) | Ice Storm, 1998-01-07, $3,660,000 property; crops not reported (1998 dollars); NWS zone NHZ008 | Countywide (zone-level records). | |||
| Flash Flood, Flood, Lakeshore Flood | damage and flood days (flood depth: FIRM) | 111 records, 1996 to 2025 (9 zone-level) | Flash Flood, 1996-10-20, $2,200,000 property; crops not reported (1996 dollars) | Event records naming jurisdictions in the plan: Concord city (4 records), Henniker town (4 records), Hooksett town (4 records), Pembroke town (4 records), Allenstown town (3 records), Danbury town (2 records), Epsom town (2 records), New London town (2 records), Pittsfield town (2 records), Andover town (1 record); and 8 more jurisdictions (see the Excel file). Zone-level records (9) 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 Flow | none (count and damage only) | 0 | |||||
| Lightning | annualized frequency (the measure FEMA's Local Mitigation Planning Handbook names) | 20 records, 1997 to 2025 | Lightning, 1997-07-09, $3,000,000 property; crops not reported (1997 dollars) | Event records naming jurisdictions in the plan: Allenstown town (2 records), Franklin city (2 records), Hooksett town (2 records), Pittsfield town (2 records), Sutton town (2 records), Bradford town (1 record), Chichester town (1 record), Danbury town (1 record), Henniker town (1 record), Loudon town (1 record); and 4 more jurisdictions (see the Excel file). | Storm Events lists lightning with damage or casualties. | ||
| High Wind and Strong Wind (outside NRI's Strong Wind definition) | wind speed (kt and mph) | 49 records, 1996 to 2017 (49 zone-level) | 34 kt (39 mph) to 60 kt (69 mph) (median 50 kt (58 mph)); 21 with a recorded value | 60 kt (69 mph), measurement type not recorded, High Wind, 1997-03-06, 1 direct injury (reported for the zone); NWS zone NHZ008 | High Wind, 2012-10-29, $106,000 property; $0 crops (zone total, 2012 dollars) | Countywide (zone-level records). | |
| Thunderstorm Wind | wind speed (kt and mph) | 242 records, 1962 to 2026 | 50 kt (58 mph) to 78 kt (90 mph) (median 50 kt (58 mph)); 199 with a recorded value | 78 kt (90 mph) estimated gust, Thunderstorm Wind, 2020-05-15 | Thunderstorm Wind, 2022-07-21, $10,000 property; $0 crops (2022 dollars) | Event records naming jurisdictions in the plan: Franklin city (15 records), Concord city (14 records), Henniker town (12 records), Loudon town (12 records), Danbury town (10 records), Hopkinton town (10 records), Chichester town (7 records), Warner town (7 records), Hill town (6 records), Northfield town (6 records); and 17 more jurisdictions (see the Excel file). | |
| Tornado | Enhanced Fujita (Fujita before Feb 2007) | 7 records, 1967 to 2018 | F/EF0 to F/EF2 (median F/EF1); 7 with a recorded value | EF2 tornado, 2008-07-24, 5.25 mi within this county, 880 yd wide, $153,000 property; crops not reported (2008 dollars) | Event records naming jurisdictions in the plan: Pittsfield town (2 records), Epsom town (1 record), Warner 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). | |
| Wildfire | acres burned (local data) | 0 | |||||
| Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet | none in data (snowfall: local data) | 184 records, 1996 to 2026 (184 zone-level) | No damage reported in 184 records. | Countywide (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: 29 declarations covering 23 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
| Declared | Incident began | FEMA number | Type | Title | Mapped hazard | County Public Assistancefederal share obligated, nominal dollars | Notes |
|---|---|---|---|---|---|---|---|
| 2020-04-03 | 2020-01-20 | DR-4516-NH | Major disaster | COVID-19 Pandemic | Non-natural, not counted | $201,082,551.58 | |
| 2020-03-13 | 2020-01-20 | EM-3445-NH | Emergency | COVID-19 | Non-natural, not counted | no Public Assistance recorded | same incident as DR-4516 |
| 2018-01-02 | 2017-10-29 | DR-4355-NH | Major disaster | Severe Storm and Flooding | Inland Flooding | $1,114,593.92 | |
| 2013-03-19 | 2013-02-08 | DR-4105-NH | Major disaster | Severe Winter Storm and Snowstorm | Winter Weather | $1,954,889.31 | |
| 2012-10-30 | 2012-10-26 | EM-3360-NH | Emergency | Hurricane Sandy | Hurricane | $80,091.20 | |
| 2011-11-01 | 2011-10-29 | EM-3344-NH | Emergency | Severe Storm | Hazard not mapped (severe storm title names no single hazard); not counted | no Public Assistance recorded | |
| 2011-09-03 | 2011-08-26 | DR-4026-NH | Major disaster | Tropical Storm Irene | Hurricane | $514,431.20 | |
| 2011-08-27 | 2011-08-26 | EM-3333-NH | Emergency | Hurricane Irene | Hurricane | $26,333.17 | same incident as DR-4026 |
| 2010-03-29 | 2010-02-23 | DR-1892-NH | Major disaster | Severe Winter Storm | Winter Weather | $606,882.82 | |
| 2009-01-02 | 2008-12-11 | DR-1812-NH | Major disaster | Severe Winter Storm | Ice Storm | $3,020,006.31 | |
| 2008-12-13 | 2008-12-11 | EM-3297-NH | Emergency | Severe Winter Storm | Winter Weather | no Public Assistance recorded | same incident as DR-1812 |
| 2008-10-03 | 2008-09-06 | DR-1799-NH | Major disaster | Severe Storms and Flooding | Inland Flooding | $180,789.65 | |
| 2008-08-11 | 2008-07-24 | DR-1782-NH | Major disaster | Severe Storms, Tornado, and Flooding | Inland Flooding; Tornado | $125,683.33 | |
| 2007-04-27 | 2007-04-15 | DR-1695-NH | Major disaster | Severe Storms and Flooding | Inland Flooding | $3,680,006.73 | |
| 2006-05-25 | 2006-05-12 | DR-1643-NH | Major disaster | Severe Storms and Flooding | Inland Flooding | $3,948,305.76 | |
| 2005-10-26 | 2005-10-07 | DR-1610-NH | Major disaster | Severe Storms and Flooding | Inland Flooding | $5,303,104.99 | |
| 2005-09-19 | 2005-08-29 | EM-3258-NH | Emergency | Hurricane Katrina Evacuation | Hurricane: evacuation support, not a local hazard event; not counted | no Public Assistance recorded | |
| 2005-03-30 | 2005-01-22 | EM-3207-NH | Emergency | Record and/or Near Record Snow | Winter Weather | $1,360,736.09 | |
| 2004-01-15 | 2003-12-06 | EM-3193-NH | Emergency | Snow | Winter Weather | $1,204,355.54 | |
| 2003-03-11 | 2003-02-17 | EM-3177-NH | Emergency | Snow | Winter Weather | $209,573.30 | |
| 2001-03-28 | 2001-03-05 | EM-3166-NH | Emergency | Snow | Winter Weather | $1,030,921.38 | |
| 1998-07-02 | 1998-06-12 | DR-1231-NH | Major disaster | Severe Storms and Flooding | Inland Flooding; Winter Weather | no Public Assistance recorded | |
| 1998-01-15 | 1998-01-07 | DR-1199-NH | Major disaster | Severe Ice Storm, Rains and High Winds | Ice Storm; Strong Wind | no Public Assistance recorded | |
| 1996-10-29 | 1996-10-20 | DR-1144-NH | Major disaster | Fall Northeaster Rainstorm | Inland Flooding | no Public Assistance recorded | |
| 1996-01-03 | 1995-10-20 | DR-1077-NH | Major disaster | Excessive Rainfall, High Winds, and Flooding | Inland Flooding (primary); also designated: Strong Wind | no Public Assistance recorded | |
| 1993-03-16 | 1993-03-13 | EM-3101-NH | Emergency | Blizzards, High Winds & Record Snowfall | Winter Weather | no Public Assistance recorded | |
| 1990-08-29 | 1990-08-07 | DR-876-NH | Major disaster | Severe Storms & Flooding | Inland Flooding | no Public Assistance recorded | |
| 1987-04-16 | 1987-03-30 | DR-789-NH | Major disaster | Severe Storms & Flooding | Inland Flooding | no Public Assistance recorded | |
| 1973-07-11 | 1973-07-11 | DR-399-NH | Major disaster | Severe Storms & Flooding | Inland Flooding | no 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
| Declared | Incident began | FEMA number | Type | Title | Mapped hazard |
|---|---|---|---|---|---|
| 1953-07-02 | 1953-07-02 | DR-11-NH | Major disaster | Forest Fire | Wildfire |
FEMA recorded these with designated area Statewide and no county, so they are listed on every county page in the state and not counted with county rows. Local data needed: whether each one affected this county.
Public Assistance filed under this county for declarations that do not list it: 33 rows, $35,291,465.36
Sources: 2, 3
| FEMA number | Declared | Title | Applicant | PA obligatedfederal share obligated, nominal dollars |
|---|---|---|---|---|
| DR-4812-NH | 2024-08-20 | Severe Storm and Flooding | NH Fish and Game Department | $798,992.38 |
| DR-4812-NH | 2024-08-20 | Severe Storm and Flooding | NH Department of Transportation (DOT) | $528,762.95 |
| DR-4771-NH | 2024-04-19 | Severe Storms and Flooding | NH Department of Transportation (DOT) | $131,596.99 |
| DR-4761-NH | 2024-02-27 | Severe Storm and Flooding | NH Fish and Game Department | $250,222.50 |
| DR-4761-NH | 2024-02-27 | Severe Storm and Flooding | NH Department of Transportation (DOT) | $825,454.49 |
| DR-4740-NH | 2023-09-14 | Severe Storms and Flooding | NH Department of Transportation (DOT) | $1,314,105.08 |
| DR-4693-NH | 2023-03-15 | Severe Storm and Flooding | NH Department of Transportation (DOT) | $36,105.85 |
| DR-4693-NH | 2023-03-15 | Severe Storm and Flooding | NH Department of Corrections (DOC) | $19,401.23 |
| DR-4624-NH | 2021-10-04 | Severe Storm and Flooding | NH Department of Transportation (DOT) | $3,616,758.79 |
| DR-4622-NH | 2021-09-30 | Severe Storm and Flooding | NH Department of Transportation (DOT) | $16,176.03 |
| DR-4457-NH | 2019-08-15 | Severe Storm and Flooding | NH Fish and Game Department | $82,222.57 |
| DR-4457-NH | 2019-08-15 | Severe Storm and Flooding | NH Department of Transportation (DOT) | $1,498,868.29 |
| DR-4371-NH | 2018-06-08 | Severe Winter Storm and Snowstorm | NH Department of Transportation (DOT) | $596,700.56 |
| DR-4370-NH | 2018-06-08 | Severe Storm and Flooding | NH Department of Transportation (DOT) | $19,050,013.74 |
| DR-4329-NH | 2017-08-09 | Severe Storms and Flooding | NH Fish and Game Department | $7,381.85 |
| DR-4329-NH | 2017-08-09 | Severe Storms and Flooding | NH Department of Transportation (DOT) | $1,875,952.82 |
| DR-4316-NH | 2017-06-01 | Severe Winter Storm | NH Department of Transportation (DOT) | $72,018.33 |
| DR-4209-NH | 2015-03-25 | Severe Winter Storm and Snowstorm | NH Department of Transportation (DOT) | $636,094.51 |
| DR-4139-NH | 2013-08-02 | Severe Storms, Tornadoes, and Flooding | NH Department of Transportation (DOT) | $191,695.79 |
| DR-4095-NH | 2012-11-28 | Hurricane Sandy | NH Fish and Game Department | $1,110.75 |
| DR-4095-NH | 2012-11-28 | Hurricane Sandy | NH Department of Transportation (DOT) | $149,655.82 |
| DR-4049-NH | 2011-12-05 | Severe Storm and Snowstorm | NH Fish and Game Department | $3,601.62 |
| DR-4049-NH | 2011-12-05 | Severe Storm and Snowstorm | NH Department of Transportation (DOT) | $226,261.55 |
| DR-4049-NH | 2011-12-05 | Severe Storm and Snowstorm | NH Department of Health and Human Services (DHHS) | $2,750.03 |
| DR-4006-NH | 2011-07-22 | Severe Storms and Flooding | NH Department of Transportation (DOT) | $771,932.91 |
| DR-1913-NH | 2010-05-12 | Severe Storms and Flooding | NH Department of Transportation (DOT) | $29,821.53 |
| DR-1913-NH | 2010-05-12 | Severe Storms and Flooding | NH Department of Health and Human Services (DHHS) | $1,885.73 |
| DR-1787-NH | 2008-09-05 | Severe Storms and Flooding | NH Fish and Game Department | $37,579.61 |
| DR-1787-NH | 2008-09-05 | Severe Storms and Flooding | NH Department of Transportation (DOT) | $1,408,841.01 |
| EM-3211-NH | 2005-04-28 | Record Snow | NH Department of Transportation (DOT) | $602,177.51 |
| EM-3208-NH | 2005-03-30 | Record Snow | NH Department of Transportation (DOT) | $497,312.29 |
| DR-1489-NH | 2003-09-12 | Severe Storms and Flooding | NH Department of Transportation (DOT) | $5,512.50 |
| DR-1305-NH | 1999-10-18 | Tropical Storm Floyd | NH Department of Transportation (DOT) | $4,497.75 |
FEMA's Public Assistance summaries file these applicants under this county, but FEMA's declaration rows for these disasters do not designate it (an electric cooperative or district serving several counties, for example). Not in any declaration row above and not counted.
Previous occurrences by hazard, with explicit no-event rows
Sources: 2, 6, 7
| Hazard | Storm Events records, all years on file(years in the Period column) | Since plan approvalrecords | In the 12 months before plan approvalrecords | Last 5 yearsrecords | Declared incidents, all yearsseparate disasters | Declared since approvalseparate disasters | Period | Statement |
|---|---|---|---|---|---|---|---|---|
| Avalanche | 0 | 0 | 0 | 1996 to 2026-06-30 | No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events | |||
| Cold Wave | 22 | 2 | 0 | 1996 to 2026-06-30 | Includes 1 Frost/Freeze record. | |||
| Drought | 21 | 8 | 0 | 1996 to 2026-06-30 | ||||
| Earthquake | 0 | 0 | 0 | Storm Events does not record earthquakes; the USGS earthquake catalog is the source. | ||||
| Hail | 101 | 21 | 0 | 1955 to 2026-06-30 | ||||
| Heat Wave | 3 | 1 | 0 | 1996 to 2026-06-30 | ||||
| Hurricane | 2 | 0 | 2 | 1996 to 2026-06-30 | ||||
| Ice Storm | 3 | 0 | 2 | 1996 to 2026-06-30 | ||||
| Inland Flooding | 111 | 19 | 12 | 1996 to 2026-06-30 | ||||
| Landslide | 0 | 0 | 0 | 1996 to 2026-06-30 | No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events | |||
| Lightning | 20 | 2 | 0 | 1996 to 2026-06-30 | ||||
| Strong Wind | 291 | 31 | 2 | 1955 to 2026-06-30 | Includes 18 High Wind and 31 Strong Wind records. | |||
| Tornado | 7 | 0 | 1 | 1950 to 2026-06-30 | ||||
| Wildfire | 0 | 0 | 0 | 1996 to 2026-06-30 | No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events | |||
| Winter Weather | 184 | 20 | 9 | 1996 to 2026-06-30 |
Notable Storm Events records
Sources: 1, 6, 7
| Date | Event type | Magnitude or extent | Damagenominal dollars | Deaths, injuriesdirect only | Location | Flags | Why listed |
|---|---|---|---|---|---|---|---|
| 2024-06-19 | Excessive Heat | $0 property; $0 crops (zone total, 2024 dollars) | 0, 0 | NWS zone NHZ008 (MERRIMACK), zone-level | within last 5 years | B1-c worst recorded: Excessive Heat, Heat | |
| 2020-08-04 | Tropical Storm | $5,000 property; crops not reported (zone total, 2020 dollars) | 0, 0 | NWS zone NHZ008 (MERRIMACK), zone-level | B1-c worst recorded: Hurricane, Tropical Storm, Tropical Depression | ||
| 2020-05-15 | Thunderstorm Wind | 78 kt (90 mph) estimated gust | damage not reported | 0, 0 | WILMOT FLAT | B1-c worst recorded: Thunderstorm Wind | |
| 2008-07-24 | Tornado | EF2, 5.25 mi within this county, 880 yd wide | $153,000 property; crops not reported (2008 dollars) | 0, 0 | EPSOM to PITTSFIELD | B1-c worst recorded: Tornado | |
| 2000-01-13 | Extreme Cold/Wind Chill | damage not reported | 0, 0 | NWS zone NHZ008 (MERRIMACK), zone-level | B1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill | ||
| 1999-03-07 | Strong Wind | speed not recorded | damage not reported | 1, 1 | NWS zone NHZ008 (MERRIMACK), zone-level | deaths or injuries recorded | |
| 1998-01-07 | Ice Storm | $3,660,000 property; crops not reported (zone total, 1998 dollars) | 0, 0 | NWS zone NHZ008 (MERRIMACK), zone-level | B1-c worst recorded: Ice Storm | ||
| 1997-07-09 | Lightning | $3,000,000 property; crops not reported (1997 dollars) | 0, 0 | BRADFORD | B1-c worst recorded: Lightning | ||
| 1997-03-06 | High Wind | 60 kt (69 mph), measurement type not recorded | damage not reported | 0, 1 | NWS zone NHZ008 (MERRIMACK), zone-level | B1-c worst recorded: High Wind and Strong Wind | |
| 1996-10-20 | Flash Flood | $2,200,000 property; crops not reported (1996 dollars) | 0, 0 | COUNTYWIDE | B1-c worst recorded: Flash Flood, Flood, Lakeshore Flood | ||
| 1994-08-21 | Thunderstorm Wind | speed not recorded | damage not recorded (pre-1996 record) | 1, 0 | location not recorded | deaths or injuries recorded | |
| 1976-08-15 | Tornado | F1, 33 yd wide | damage not recorded (pre-1996 record) | 0, 5 | location not recorded | deaths or injuries recorded |
The full list is in the Excel file, sheet "B1-d Storm Events history" (765 rows).
Location is the place NOAA recorded, as written in its data; it need not be a jurisdiction in this plan.
Local data needed: state-declared emergencies, from your state emergency management agency (federal data do not include them).
FEMA's declaration data list no tribal or special-area declarations for this state.
Supports FEMA checklist item B1-e: probability of future events
Probability: FEMA annualized frequency and descriptor per hazard
Sources: 5, 6
| Hazard | FEMA annualized frequency (modeled)unit per row | Unit | In plain terms | Descriptor | Descriptor basis | NRI events or days in its record period (hail, wind and tornado are area-weighted, so can be fractional) | NRI period | Location | Note |
|---|---|---|---|---|---|---|---|---|---|
| Avalanche | 0.01 | events per year | about 1 in 100 years | Possible | FEMA annualized frequency (modeled) | 0 | 1994 to 2023 (30 years) | see B1-f | 0.01 is NRI's minimum avalanche frequency for a county in an avalanche susceptibility zone; NRI records no avalanche here, so the descriptor reflects the floor, not local events. |
| Cold Wave | 1.74 | event-days per year | about 1.74 days per year | Likely | Storm Events event-days in 8 of 30 years, 1996 to 2025 (26.7%) | 33 | 2005-11-12 to 2024-11-12 (19 years) | countywide | |
| Drought | 2.15 | event-days per year | about 2.15 days per year | Likely | Storm Events event-days in 4 of 30 years, 1996 to 2025 (13.3%) | 154 | 2000 to 2025 (25.25 years; D3 and D4 only) | countywide | |
| Earthquake | 0.00165 | annual probability at a location | chance a given location in the county has at least minor-damage shaking in a year: 0.165% | not shown | modeled | see B1-f | No descriptor (Storm Events does not record earthquakes). | ||
| Hail | 2.12 | events per year | about 2.12 per year | Highly likely | FEMA annualized frequency (modeled) | 80.7 (modeled) | 1986 to 2023 (38 years) | countywide | |
| Heat Wave | 3.42 | event-days per year | about 3.42 days per year | Possible | Storm Events event-days in 2 of 30 years, 1996 to 2025 (6.67%) | 62.1 | 2005-11-12 to 2024-11-12 (19 years) | countywide | |
| Hurricane | 0.0865 | events per year | about 1 in 12 years | Possible | FEMA annualized frequency (modeled) | 32 | 1851 to 2024 (Atlantic) | see B1-f | NRI counts hurricane and tropical storm tracks passing within storm-force wind range; federal declarations are in B1-d. |
| Ice Storm | 1.84 | event-days per year | about 1.84 days per year | Likely | Storm Events event-days in 3 of 30 years, 1996 to 2025 (10%) | 124 | 1946-12-31 to 2014-02-12 (67 years) | countywide | |
| Inland Flooding | 2.61 | event-days per year | about 2.61 days per year | Likely | Storm Events event-days in 26 of 30 years, 1996 to 2025 (86.7%) | 73 | 1996 to 2023 (28 years) | see B1-f | |
| Landslide | 1.29 | events per year (modeled) | about 1.29 per year | Highly likely | FEMA annualized frequency (modeled) | not shown | modeled | see B1-f | |
| Lightning | 20.6 | days per year with a strike | about 20.6 days per year | Highly likely | FEMA annualized frequency (modeled) | not shown | 1995 to 2023 (29 years; CONUS) | countywide | |
| Strong Wind | 0.913 | events per year | about 0.91 per year | Likely | FEMA annualized frequency (modeled) | 35 | 1986 to 2023 (38 years) | countywide | |
| Tornado | 0.129 | events per year | about 1 in 8 years | Likely | FEMA annualized frequency (modeled) | not shown | 1950 to 2023 (EF2+); 1986 to 2023 (EF0-1) | see B1-f | |
| Wildfire | 0.0000254 | annual probability at a location | chance a given location in the county burns in a year: 0.00254% | Storm Events records in 0 of 30 years, 1996 to 2025 (0%) | not shown | modeled | see B1-f | No descriptor: no Storm Events record 1996 to 2025 | |
| Winter Weather | 19.1 | event-days per year | about 19.1 days per year | Highly likely | Storm Events event-days in 30 of 30 years, 1996 to 2025 (100%) | 363 | 2005-11-12 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
| Unit | Descriptor | Definition |
|---|---|---|
| events per year | Highly likely | 1 or more per year |
| events per year | Likely | about once in 1 to 10 years |
| events per year | Possible | about once in 10 to 100 years |
| events per year | Unlikely | less than once in 100 years |
| annual probability | Likely | 10% to under 100% chance in a given year |
| annual probability | Possible | 1% to under 10% chance in a given year |
| annual probability | Unlikely | under 1% chance in a given year |
| event-days (share of years) | Highly likely | event-days recorded in 90% or more of years |
| event-days (share of years) | Likely | event-days recorded in 10% to under 90% of years |
| event-days (share of years) | Possible | event-days recorded in some years but under 10% of years |
| lightning strike-days | Highly likely | cloud-to-ground strikes on 1 or more days per year |
Intensity bands: historical frequency (Storm Events)
Source: 6
| Hazard | Band | Years | Eventscounty-coded records | Years in period | Events per yearevents / years |
|---|---|---|---|---|---|
| Hail | 1.00-1.99 in | 1996 to 2025 | 52 | 30 | 1.73 |
| Hail | 2.00 in+ | 1996 to 2025 | 1 | 30 | 0.0333 |
| Thunderstorm Wind (counted as NRI Strong Wind) | 50-64 kt | 1996 to 2025 | 187 | 30 | 6.23 |
| Thunderstorm Wind (counted as NRI Strong Wind) | 65 kt+ | 1996 to 2025 | 1 | 30 | 0.0333 |
| Thunderstorm Wind (counted as NRI Strong Wind) | unmeasured or below 50 kt | 1996 to 2025 | 7 | 30 | 0.233 |
| Tornado | EF0-1 | 1996 to 2025 | 3 | 30 | 0.1 |
| Tornado | EF2-3 | 1996 to 2025 | 1 | 30 | 0.0333 |
| Tornado | EF4-5 | 1996 to 2025 | 0 | 30 | 0 |
| Tornado | unrated (EFU) | 1996 to 2025 | 0 | 30 | 0 |
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
| Hazard | Tractsrated of all | NRI risk score, 0 to 100 | Tracts by rating | ||
|---|---|---|---|---|---|
| Min | Median | Max | |||
| Avalanche | 4 of 39 | 15.6 | 17.0 | 17.8 | Very Low 4, Not Applicable 35 |
| Cold Wave | 39 of 39 | 23.5 | 38.0 | 55.9 | Relatively Moderate 6, Relatively Low 33 |
| Drought | 22 of 39 | 76.7 | 87.7 | 93.4 | Relatively Moderate 2, Relatively Low 19, Very Low 1, No Rating 17 |
| Earthquake | 39 of 39 | 18.5 | 49.9 | 77.1 | Relatively Low 28, Very Low 11 |
| Hail | 39 of 39 | 24.2 | 41.7 | 57.4 | Relatively Low 31, Very Low 8 |
| Heat Wave | 39 of 39 | 9.7 | 36.4 | 62.2 | Relatively Moderate 1, Relatively Low 36, Very Low 2 |
| Hurricane | 39 of 39 | 53.2 | 77.0 | 85.4 | Relatively Moderate 12, Relatively Low 27 |
| Ice Storm | 39 of 39 | 44.4 | 86.6 | 94.7 | Relatively High 8, Relatively Moderate 30, Relatively Low 1 |
| Inland Flooding | 39 of 39 | 18.8 | 56.3 | 92.6 | Relatively High 9, Relatively Moderate 16, Relatively Low 14 |
| Landslide | 39 of 39 | 19.0 | 82.0 | 96.6 | Relatively Moderate 3, Relatively Low 18, Very Low 18 |
| Lightning | 39 of 39 | 40.9 | 81.2 | 95.2 | Relatively High 27, Relatively Moderate 11, Relatively Low 1 |
| Strong Wind | 39 of 39 | 21.0 | 48.6 | 73.8 | Relatively Moderate 12, Relatively Low 27 |
| Tornado | 39 of 39 | 20.0 | 41.4 | 60.7 | Relatively Moderate 4, Relatively Low 33, Very Low 2 |
| Wildfire | 39 of 39 | 18.5 | 56.6 | 73.7 | Relatively Low 4, Very Low 35 |
| Winter Weather | 39 of 39 | 38.4 | 70.5 | 84.5 | Relatively High 7, Relatively Moderate 31, Relatively Low 1 |
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
| Jurisdiction | Type | Plan status | Repetitive lossFMA RL and SRL (44 CFR 77.2); repeat-flood, any definition | Public Assistance to this jurisdictionFEMA records matched by applicant name; federal share obligated, nominal dollars | Event records naming this placeall years; since its plan | Notes |
|---|---|---|---|---|---|---|
| Concord city | City | Approved, expires 2029-05-05 | FMA RL 0, SRL 0; any 2 | $1,164,226.34 | 31 total; 1 since its plan | Includes $280,783.63 for declarations not counted as hazard incidents (DR-4516-NH). |
| Franklin city | City | Approved, expires 2029-06-09 | FMA RL 0, SRL 0; any 0 | $277,160.55 | 24 total; 0 since its plan | Includes $77,400.73 for declarations not counted as hazard incidents (DR-4516-NH). |
| Allenstown town | Town | Expired on 2026-03-09 | FMA RL 6, SRL 3; any 18 | $207,299.48 | 12 total; 1 since its plan | |
| Andover town | Town | Approved, expires 2030-07-28 | FMA RL 0, SRL 0; any 0 | $569,923.51 | 9 total; 0 since its plan | Includes $5,668 for declarations not counted as hazard incidents (DR-4516-NH). |
| Boscawen town | Town | Approved, expires 2030-10-13 | FMA RL 0, SRL 0; any 0 | $44,712.27 | 2 total; 0 since its plan | Includes $11,776.17 for declarations not counted as hazard incidents (DR-4516-NH). |
| Bow town | Town | Approved, expires 2030-02-09 | FMA RL 0, SRL 0; any 1 | $579,886.51 | 1 total; 0 since its plan | Includes $58,880.02 for declarations not counted as hazard incidents (DR-4516-NH). |
| Bradford town | Town | Approved, expires 2030-07-20 | FMA RL 0, SRL 0; any 4 | $657,866.15 | 6 total; 0 since its plan | |
| Canterbury town | Town | Approved, expires 2028-04-17 | FMA RL 0, SRL 0; any 0 | $190,597.61 | 7 total; 0 since its plan | |
| Chichester town | Town | Approved, expires 2030-12-14 | FMA RL 0, SRL 0; any 0 | $182,885.09 | 9 total; 0 since its plan | |
| Danbury town | Town | Expired on 2026-07-28 | FMA RL 0, SRL 0; any 1 | $151,131.20 | 17 total; 5 since its plan | |
| Dunbarton town | Town | Approved, expires 2028-04-17 | FMA RL 0, SRL 0; any 0 | $112,040.96 | 9 total; 1 since its plan | |
| Epsom town | Town | Approved, expires 2029-10-22 | FMA RL 0, SRL 1; any 4 | $1,160,876.21 | 11 total; 0 since its plan | Includes $50,546.95 for declarations not counted as hazard incidents (DR-4516-NH). |
| Henniker town | Town | Approved, expires 2030-06-22 | FMA RL 0, SRL 0; any 0 | $481,466.21 | 22 total; 0 since its plan | |
| Hill town | Town | Expired on 2026-01-26 | FMA RL 0, SRL 0; any 0 | $73,441.33 | 10 total; 2 since its plan | |
| Hooksett town | Town | Approved, expires 2027-04-28 | FMA RL 0, SRL 1; any 4 | $1,025,426.89 | 11 total; 2 since its plan | Includes $492,321.98 for declarations not counted as hazard incidents (DR-4516-NH). |
| Hopkinton town | Town | Approved, expires 2029-09-15 | FMA RL 0, SRL 0; any 0 | $227,452.39 | 14 total; 2 since its plan | |
| Loudon town | Town | Approved, expires 2028-04-17 | FMA RL 0, SRL 0; any 0 | $798,868.82 | 16 total; 0 since its plan | |
| New London town | Town | Approved, expires 2030-11-17 | FMA RL 0, SRL 0; any 0 | $263,632.29 | 7 total; 0 since its plan | Includes $12,838.88 for declarations not counted as hazard incidents (DR-4516-NH). |
| Newbury town | Town | Approved, expires 2029-07-17 | FMA RL 0, SRL 0; any 0 | $423,972.04 | 5 total; 0 since its plan | Includes $18,957.18 for declarations not counted as hazard incidents (DR-4516-NH). |
| Northfield town | Town | Expired on 2024-08-29 | FMA RL 0, SRL 0; any 0 | $147,227.76 | 11 total; 3 since its plan | |
| Pembroke town | Town | Approved, expires 2027-02-24 | FMA RL 1, SRL 1; any 7 | $290,265.12 | 12 total; 2 since its plan | |
| Pittsfield town | Town | Approved, expires 2028-04-17 | FMA RL 0, SRL 0; any 3 | $233,396.89 | 9 total; 0 since its plan | |
| Salisbury town | Town | Approved, expires 2030-07-09 | FMA RL 0, SRL 0; any 0 | $140,272.09 | 3 total; 0 since its plan | |
| Sutton town | Town | Approved, expires 2030-07-24 | FMA RL 0, SRL 0; any 0 | $294,116.96 | 4 total; 0 since its plan | |
| Warner town | Town | Approved, expires 2029-12-18 | FMA RL 0, SRL 0; any 1 | $606,859.80 | 10 total; 1 since its plan | |
| Webster town | Town | Approved, expires 2031-02-04 | FMA RL 0, SRL 0; any 0 | $178,030.86 | 2 total; 0 since its plan | |
| Wilmot town | Town | Approved, expires 2030-05-18 | FMA RL 0, SRL 0; any 0 | $576,866.44 | 5 total; 0 since its plan |
Repetitive-loss counts are for whole NFIP communities, which can extend beyond this county (see the note in B2-c).
County Public Assistance in B1-d also includes applicants filed under the county that are not jurisdictions in this plan (for example state agencies, special districts and nonprofits), so the jurisdiction rows add up to less.
Supports FEMA checklist items B2-a and B2-b: vulnerability and potential impacts
Local data needed
The table below gives county-level starting figures; the plan describes impacts for each jurisdiction and its own assets.
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
| Hazard | Building exposuremodeled dollars | Agriculture exposuremodeled dollars | Population exposedpeople | EAL buildingsmodeled dollars per year | EAL agriculturemodeled dollars per year | Cost of expected deaths and injuriesFEMA's dollar value per year, not property damage | EAL as % of exposurebuildings; agriculture where noted | Storm Events damage since plancounty-coded records, property plus crops, nominal dollars | Zone-level damage since planproperty plus crops, reported for the zone | Public Assistance since plannominal dollars; see note | Note |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Avalanche | $0 | n/a | under 1 | $0 | n/a | $119 | building exposure is 0 in NRI | ||||
| Cold Wave | $30,779,205,627 | $63,536,002 | 153,727 | $258 | $7,725 | $1,362,944 | under 0.0001% | ||||
| Drought | n/a | $25,332,665 | n/a | n/a | $329,315 | n/a | 1.3% (agriculture) | NRI has no building exposure for this hazard; agriculture shown | |||
| Earthquake | $54,206,951,475 | n/a | 153,808 | $1,295,236 | n/a | $248,730 | 0.00239% | ||||
| Hail | $30,779,205,627 | $63,536,002 | 153,727 | $12,614 | $5,259 | $184,251 | under 0.0001% | ||||
| Heat Wave | $30,779,205,627 | $63,536,002 | 153,727 | $1 | $25,141 | $1,154,228 | under 0.0001% | ||||
| Hurricane | $30,777,471,077 | $63,536,002 | 153,719 | $4,129,582 | $201,014 | $167,997 | 0.0134% | ||||
| Ice Storm | $30,754,526,567 | n/a | 153,592 | $1,037,146 | n/a | $109,674 | 0.00337% | ||||
| Inland Flooding | $30,678,750,271 | $22,410,759 | 3,152 | $33,690,402 | $339,084 | $68,675 | n/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 | $1,114,329,406 | n/a | 5,440 | $15,631 | n/a | $6,989 | 0.0014% | ||||
| Lightning | $30,779,205,627 | n/a | 153,727 | $268,392 | n/a | $1,149,860 | 0.000872% | ||||
| Strong Wind | $30,779,205,627 | $63,536,002 | 153,727 | $110,756 | $1,351 | $636,071 | 0.00036% | ||||
| Tornado | $30,779,205,627 | $63,536,002 | 153,727 | $773,959 | $521 | $1,134,076 | 0.00251% | ||||
| Wildfire | $9,751,920,600 | $19,784,556 | 54,132 | $21,385 | $4 | $2,969 | 0.000219% | ||||
| Winter Weather | $30,779,205,627 | $63,536,002 | 153,727 | $96,946 | $32 | $171,497 | 0.000315% |
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
| Measure | Value |
|---|---|
| Population | 153,727 |
| Building value (total, not at risk) | $30,779,205,627 |
| Agriculture value (total, not at risk) | $63,536,002 |
| NRI risk rating (all hazards) | Relatively Low |
| Expected annual loss, buildings and agriculture, all hazards | $42,361,753 |
| 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) | $6,398,081 |
| Social vulnerability rating | Very Low |
| Community resilience rating | Very High |
| NRI version | December 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
| Definition | Properties | Severe repetitive loss | Properties |
|---|---|---|---|
| Repetitive loss, FMA definition (44 CFR 77.2) | 7 | Severe repetitive loss, FMA definition (44 CFR 77.2) | 6 |
| Repetitive loss, NFIP insurance definition | 38 | Severe repetitive loss, NFIP insurance definition | 2 |
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
| Scope | RL, FMAproperties | SRL, FMAproperties | RL, NFIPproperties | SRL, NFIPproperties | Any categoryproperties | Mitigatedproperties | Currently insuredproperties |
|---|---|---|---|---|---|---|---|
| County total | 7 | 6 | 38 | 2 | 45 | 7 | 5 |
| of which: Allenstown town | 6 | 3 | 13 | 1 | 18 | 5 | 1 |
| of which: Bradford town | 0 | 0 | 4 | 0 | 4 | 0 | 2 |
| of which: Bow town | 0 | 0 | 1 | 0 | 1 | 0 | 1 |
| of which: Concord city | 0 | 0 | 2 | 0 | 2 | 0 | 0 |
| of which: Danbury town | 0 | 0 | 1 | 0 | 1 | 0 | 0 |
| of which: Epsom town | 0 | 1 | 3 | 0 | 4 | 1 | 0 |
| of which: Hooksett town | 0 | 1 | 4 | 1 | 4 | 0 | 0 |
| of which: Pembroke town | 1 | 1 | 6 | 0 | 7 | 1 | 1 |
| of which: Pittsfield town | 0 | 0 | 3 | 0 | 3 | 0 | 0 |
| of which: Warner town | 0 | 0 | 1 | 0 | 1 | 0 | 0 |
Repeat-flood properties by jurisdiction in the plan (NFIP community)
Sources: 1, 4
| Jurisdiction | NFIP community ID | RL, FMAproperties | SRL, FMAproperties | RL, NFIPproperties | SRL, NFIPproperties | Any categoryproperties | Mitigatedproperties | Currently insuredproperties |
|---|---|---|---|---|---|---|---|---|
| Concord city | 330110 | 0 | 0 | 2 | 0 | 2 | 0 | 0 |
| Franklin city | 330113 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Allenstown town | 330103 | 6 | 3 | 13 | 1 | 18 | 5 | 1 |
| Andover town | 330104 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Boscawen town | 330105 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bow town | 330107 | 0 | 0 | 1 | 0 | 1 | 0 | 1 |
| Bradford town | 330106 | 0 | 0 | 4 | 0 | 4 | 0 | 2 |
| Canterbury town | 330108 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Chichester town | 330109 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Danbury town | 330111 | 0 | 0 | 1 | 0 | 1 | 0 | 0 |
| Dunbarton town | 330202 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Epsom town | 330112 | 0 | 1 | 3 | 0 | 4 | 1 | 0 |
| Henniker town | 330114 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Hill town | 330214 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Hooksett town | 330115 | 0 | 1 | 4 | 1 | 4 | 0 | 0 |
| Hopkinton town | 330116 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Loudon town | 330117 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| New London town | 330230 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Newbury town | 330226 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Northfield town | 330118 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Pembroke town | 330119 | 1 | 1 | 6 | 0 | 7 | 1 | 1 |
| Pittsfield town | 330120 | 0 | 0 | 3 | 0 | 3 | 0 | 0 |
| Salisbury town | 330121 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sutton town | 330122 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Warner town | 330123 | 0 | 0 | 1 | 0 | 1 | 0 | 0 |
| Webster town | 330236 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wilmot town | 330124 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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 group | RL, FMAproperties | SRL, FMAproperties | RL, NFIPproperties | SRL, NFIPproperties | Any categoryproperties | Mitigatedproperties | Currently insuredproperties |
|---|---|---|---|---|---|---|---|
| single-family residential | 7 | 5 | 33 | 1 | 40 | 7 | 4 |
| 2 to 4 unit residential | 0 | 0 | 2 | 0 | 2 | 0 | 0 |
| other residential | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| non-residential | 0 | 1 | 3 | 1 | 3 | 0 | 1 |
| not reported | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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 6 properties are FMA repetitive loss but not NFIP repetitive loss, and 37 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):
- FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-29T134039Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)
- FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-29T162832Z, pulled 2026-09-30, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)
- FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-29T150754Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)
- FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)
- 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)
- 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/
- 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
- 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). Merrimack County, NH: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 33013). Automated baseline. https://hazardplain.org/nh/33013/ 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