Strafford County, New Hampshire
Natural disaster risk, federal disaster history and flood insurance facts.
Strafford County, New Hampshire has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 64% of US counties. It ranks 7th of 10 counties in New Hampshire. The costliest hazards here are inland flooding, earthquakes and hurricanes. FEMA estimates about $29 million a year in expected losses, or roughly $222 per resident. Since 1973 it has been included in 23 federal disaster or emergency declarations for natural events (14 major disasters). The most recent was in June 2018 (severe winter storm and snowstorm). Fewer than 1 in 100 homes here carry federal flood insurance (198 policies). Since 1978, federal flood insurance has paid about $2.3 million on 137 claims here, including $880,000 for floods in 2007.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Strafford County
- Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
- Price a flood policy now. Most new federal policies take 30 days to start.
- Ask whether an older house is bolted to its foundation.
- Consider separate earthquake insurance where risk is high.
- Know your evacuation zone and route before June 1.
- Ask about roof age, shutters and the separate wind or hurricane deductible on your home policy.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 76.0 | $21M | ||
| Earthquake | 77.4 | $2M | ||
| Hurricane | 76.6 | $1M | ||
| Tornado | 42.2 | $1M | ||
| Ice storm | 88.1 | $951K | ||
| Cold wave | 41.8 | $861K | ||
| Lightning | 74.3 | $715K | ||
| Strong wind | 43.0 | $549K | ||
| Drought | 66.3 | $509K | ||
| Heat wave | 49.4 | $442K | ||
| Hail | 20.3 | $88K | ||
| Winter weather | 48.5 | $75K | ||
| Coastal flooding | 44.6 | $57K | ||
| Wildfire | 34.5 | $23K | ||
| Landslide | 61.7 | $4K |
Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is very low and community resilience is relatively high in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Strafford County. 2020s bar runs to November 2026.
By type
Most recent
Show all 23
New Hampshire also had 1 statewide declarations that did not name single counties.
Storm history since 1953
Tornado risk by county ›The National Weather Service has logged 260 storm reports in Strafford County since 1953, with 1 death and 18 injuries and about $13.7 million in reported damage. The strongest on record here was an F2 tornado on June 22, 1981.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Jun 22, 1981 | F2 | – | 0 / 0 |
| May 3, 1976 | F2 | – | 0 / 0 |
| Jul 24, 2008 | EF2 | New Durham | 0 / 0 |
| May 14, 1963 | F2 | – | 0 / 0 |
| Jul 6, 1999 | F2 | Strafford | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Aug 2, 1993 | Thunderstorm Wind | New Hampshie | $5M |
| Jun 22, 1981 | Tornado | – | $3M |
| Oct 20, 1996 | Flash Flood | Countywide | $2M |
| May 13, 2006 | Flood | Countywide | $1M |
| Apr 16, 2007 | Flood | Rochester | $1M |
| Jun 13, 1998 | Flash Flood | Countywide | $600K |
Source: NOAA Storm Events Database, county-based reports through Jul 16, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.
Hurricanes and tropical storms
Hurricane risk by county ›Since 1858, 4 hurricanes and 17 tropical storms have passed within 65 miles of the center of Strafford County, 8 of them since 1950. The strongest was an unnamed hurricane in 1869, with top winds near 105 mph about 57 miles away.
Strongest storms nearby
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Oct 4, 1869 | Unnamed | Category 2, 105 mph | 57 mi |
| Sep 8, 1869 | Unnamed | Category 2, 95 mph | 51 mi |
| Aug 19, 1991 | Bob | Category 1, 85 mph | 55 mi |
| Sep 27, 1985 | Gloria | Category 1, 75 mph | 44 mi |
| Sep 12, 1960 | Donna | Tropical storm, 70 mph | 55 mi |
| Sep 16, 1858 | Unnamed | Tropical storm, 70 mph | 39 mi |
Most recent storms
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Sep 17, 1999 | Floyd | Tropical storm, 55 mph | 62 mi |
| Jul 14, 1996 | Bertha | Tropical storm, 70 mph | 62 mi |
| Aug 19, 1991 | Bob | Category 1, 85 mph | 55 mi |
| Sep 27, 1985 | Gloria | Category 1, 75 mph | 44 mi |
| Aug 28, 1971 | Doria | Tropical storm, 55 mph | 55 mi |
| Sep 26, 1961 | Esther | Tropical storm, 50 mph | 62 mi |
Source: NOAA National Hurricane Center best-track records (HURDAT2), 1851 to 2025 for the Atlantic and 1949 to 2025 for the eastern Pacific. A storm counts if its track passed within 65 miles of the county's center while it was a tropical storm or hurricane. Strength is the storm's top sustained wind at that point, not the wind measured in the county. Older storms over the open sea were sometimes missed.
Flood insurance in Strafford County
Check your address flood zone ›National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.
Homes in Strafford County
Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 56,609 housing units.
Compare in New Hampshire
All 10 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| Hillsborough County | Inland flooding | |
| Rockingham County | Inland flooding | |
| Merrimack County | Inland flooding | |
| Strafford County | Inland flooding | |
| Grafton County | Inland flooding | |
| Cheshire County | Inland flooding | |
| Belknap County | Inland flooding | |
| Carroll County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Rockingham County | 33 | |
| York County, ME | 38 | |
| Merrimack County | 27 | |
| Belknap County | 28 | |
| Carroll County | 34 |
Cities in Strafford County
Common questions about Strafford County
What is the biggest natural hazard in Strafford County?
Inland flooding has the highest expected yearly losses in Strafford County, about $20.5 million a year in FEMA's estimate. Earthquake is second at $1.6 million.
How many federal disasters has Strafford County had?
Strafford County has been included in 23 federal disaster or emergency declarations for natural events since 1973, including 14 major disasters. The most recent was Severe Winter Storm and Snowstorm in June 2018.
Is Strafford County a high-risk place to live?
Its overall rating is Relatively Low, 7th highest of 10 in New Hampshire. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.
Do I need flood insurance in Strafford County?
Standard home insurance does not cover flooding. About 1 in 167 homes in Strafford County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.
How many tornadoes has Strafford County had?
NOAA records list 7 tornadoes in Strafford County since 1950. The strongest was an F2 tornado on June 22, 1981. The weather service has also logged 71 hail reports and 20 floods here.
How many hurricanes have hit Strafford County?
NOAA's hurricane records show 4 hurricanes and 17 tropical storms passing within 65 miles of the center of Strafford County. The strongest was an unnamed hurricane in 1869, with winds near 105 mph.
Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.