Natural Disasters in Portsmouth, NH
Hazard risk, disaster history, and FEMA data
Natural Hazard Risk
Source: FEMA National Risk IndexRisk Score
85.8
Relatively Moderate
Expected Annual Loss
89.9
Score (0-100)
Social Vulnerability
10.6
Score (0-100)
Community Resilience
78.8
Score (0-100)
Scores range from 0 (lowest risk) to 100 (highest risk) relative to all U.S. communities. Data from FEMA National Risk Index.
Disaster History & Federal Spending
Source: FEMATotal Declarations
35
Public Assistance
$29.5M
Individual Assistance
$2.8M
Most Common Type
Severe Storm
12 declarations
Public Assistance by Category
| Disaster | Type | Date | PA $ | IA $ |
|---|---|---|---|---|
| Severe Winter Storm and Flooding → | Winter Storm | Jul 2024 | $328K | — |
| Severe Storms and Flooding → | Severe Storm | Apr 2024 | $1.1M | — |
| Severe Storms and Flooding → | Flood | Sep 2023 | $538K | — |
| Covid-19 Pandemic → | Biological | Apr 2020 | $11.1M | $444K |
| Covid-19 → | Biological | Mar 2020 | — | — |
| Severe Storm and Flooding → | Coastal Storm | Jun 2018 | $352K | — |
| Severe Winter Storm and Snowstorm → | Snowstorm | Jun 2018 | $1.2M | — |
| Severe Winter Storm and Snowstorm → | Severe Storm | Mar 2015 | $7K | — |
| Severe Winter Storm and Snowstorm → | Severe Storm | Mar 2013 | $1.5M | — |
| Hurricane Sandy → | Hurricane | Nov 2012 | $108K | — |
| Hurricane Sandy → | Hurricane | Oct 2012 | $244K | — |
| Severe Storm and Snowstorm → | Severe Storm | Dec 2011 | — | — |
| Severe Storm → | Severe Storm | Nov 2011 | — | — |
| Hurricane Irene → | Hurricane | Aug 2011 | — | — |
| Severe Storms and Flooding → | Severe Storm | May 2010 | — | — |
| Severe Winter Storm → | Severe Storm | Mar 2010 | $1.7M | — |
| Severe Winter Storm → | Severe Ice Storm | Jan 2009 | $3.6M | — |
| Severe Winter Storm → | Severe Storm | Dec 2008 | — | — |
| Severe Storms, Tornado, and Flooding → | Severe Storm | Aug 2008 | $80K | — |
| Severe Storms and Flooding → | Severe Storm | Apr 2007 | $2.7M | $174K |
Showing 20 of 39 disasters
PA = FEMA Public Assistance (infrastructure recovery). IA = Individual Assistance (homeowner/renter aid).
Flood Insurance (NFIP)
Source: FEMA NFIPTotal Claims
2,164
Total Claims Paid
$30,808,513
Avg Claim Payout
$14,237
County-level NFIP data from FEMA National Flood Insurance Program.
Hazard Mitigation
Source: FEMA Hazard Mitigation AssistanceMitigation Projects
46
Federal Funding
$5,730,613
Properties Protected
13
Avg Benefit-Cost Ratio
2.00
BCR
Top Mitigation Project Types
| Project Type | Projects | Federal $ |
|---|---|---|
| 403.1: Stormwater Management - Culverts | 15 | $1,376,627 |
| 402.1: Infrastructure Protective Measures (Roads and Bridges) | 4 | $962,657 |
| 91.3: Local Multihazard Mitigation Plan - UPDATE | 4 | $22,987 |
| 301.1: Shoreline Stabilization (Riprap, etc.) | 4 | $202,081 |
| 300.2: Vegetation Management - Wildfire | 3 | $0 |
Federally funded projects to reduce future disaster risk. Only includes completed or obligated projects.
Portsmouth has a relatively moderate overall natural hazard risk rating according to FEMA's National Risk Index. The top hazard risks are coastal flood, ice storm, earthquake. The area has had 35 federal disaster declarations. The most common disaster type is severe storm (12 declarations). 2,164 flood insurance claims have been filed in the area. FEMA has obligated $29,476,096 in public assistance recovery funding. $2,784,167 has been distributed in individual assistance to disaster-affected residents. 46 hazard mitigation projects have been funded to reduce future risk.