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Strafford County, New Hampshire

Natural disaster risk, federal disaster history and flood insurance facts.

Relatively Low overall risk
7th of 10highest risk in New Hampshire
$29Mexpected losses a year
23federal declarations
1 in 167homes with flood insurance
Photo: U.S. Geological Survey, public domain

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

$20.5 million a yearExpected losses. Damaging events about once every 1 years.
  • 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.
$1.6 million a yearExpected losses. Damaging events about once every 485 years.
  • Ask whether an older house is bolted to its foundation.
  • Consider separate earthquake insurance where risk is high.
$1.5 million a yearExpected losses. Damaging events about once every 8 years.
  • 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.
HazardRatingScoreExpected loss a year
Inland floodingModerate76.0
$21M
EarthquakeLow77.4
$2M
HurricaneLow76.6
$1M
TornadoLow42.2
$1M
Ice stormHigh88.1
$951K
Cold waveLow41.8
$861K
LightningModerate74.3
$715K
Strong windLow43.0
$549K
DroughtModerate66.3
$509K
Heat waveLow49.4
$442K
HailVery Low20.3
$88K
Winter weatherLow48.5
$75K
Coastal floodingLow44.6
$57K
WildfireVery Low34.5
$23K
LandslideVery Low61.7
$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

Severe Storm9
Hurricane5
Snowstorm5
Flood3
Severe Ice Storm1

Most recent

Jun 8, 2018Severe Winter Storm and SnowstormMajor disaster
Mar 25, 2015Severe Winter Storm and SnowstormMajor disaster
Mar 19, 2013Severe Winter Storm and SnowstormMajor disaster
Oct 30, 2012Hurricane SandyEmergency
Nov 1, 2011Severe StormEmergency
Sep 3, 2011Tropical Storm IreneMajor disaster
Aug 27, 2011Hurricane IreneEmergency
Mar 29, 2010Severe Winter StormMajor disaster
Jan 2, 2009Severe Winter StormMajor disaster
Dec 13, 2008Severe Winter StormEmergency
Show all 23
Aug 11, 2008Severe Storms, Tornado, and FloodingMajor disaster
Apr 27, 2007Severe Storms and FloodingMajor disaster
May 25, 2006Severe Storms and FloodingMajor disaster
Sep 19, 2005Hurricane Katrina EvacuationEmergency
Mar 30, 2005Record And/Or Near Record SnowEmergency
Mar 11, 2003SnowEmergency
Mar 28, 2001SnowEmergency
Jan 15, 1998Severe Ice Storm, Rains and High WindsMajor disaster
Oct 29, 1996Fall Northeaster RainstormMajor disaster
Mar 16, 1993Blizzards, High Winds & Record SnowfallEmergency
Sep 9, 1991Hurricane Bob & Severe StormsMajor disaster
Apr 16, 1987Severe Storms & FloodingMajor disaster
Jul 11, 1973Severe Storms & FloodingMajor disaster

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.

7tornadoes
71hail reports, largest 2.5 inches
134damaging thunderstorm winds
20floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jun 22, 1981F2–0 / 0
May 3, 1976F2–0 / 0
Jul 24, 2008EF2New Durham0 / 0
May 14, 1963F2–0 / 0
Jul 6, 1999F2Strafford0 / 0

Most damaging storms

DateTypeNearDamage
Aug 2, 1993Thunderstorm WindNew Hampshie$5M
Jun 22, 1981Tornado–$3M
Oct 20, 1996Flash FloodCountywide$2M
May 13, 2006FloodCountywide$1M
Apr 16, 2007FloodRochester$1M
Jun 13, 1998Flash FloodCountywide$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.

4hurricanes
0major hurricanes (Category 3+)
17tropical storms
1999most recent: Floyd

Strongest storms nearby

DateStormStrengthClosest
Oct 4, 1869UnnamedCategory 2, 105 mph57 mi
Sep 8, 1869UnnamedCategory 2, 95 mph51 mi
Aug 19, 1991BobCategory 1, 85 mph55 mi
Sep 27, 1985GloriaCategory 1, 75 mph44 mi
Sep 12, 1960DonnaTropical storm, 70 mph55 mi
Sep 16, 1858UnnamedTropical storm, 70 mph39 mi

Most recent storms

DateStormStrengthClosest
Sep 17, 1999FloydTropical storm, 55 mph62 mi
Jul 14, 1996BerthaTropical storm, 70 mph62 mi
Aug 19, 1991BobCategory 1, 85 mph55 mi
Sep 27, 1985GloriaCategory 1, 75 mph44 mi
Aug 28, 1971DoriaTropical storm, 55 mph55 mi
Sep 26, 1961EstherTropical storm, 50 mph62 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 ›
0.6%of homes have federal flood insurance (198 policies)
14.5%of homes in mapped high-risk flood zones are insured
$2.3 millionpaid on 137 flood claims since 1978
2007costliest year, with $879,898 paid

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

$362,800median home value (New Hampshire $402,500, US $332,700)
1979median year homes were built (New Hampshire 1979, US 1980)
52%of homes built before 1980, before many modern wind, quake and flood building rules
8.2%of homes are mobile homes, which are the least safe in tornadoes and high winds

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 countiesOverall riskTop hazard
Hillsborough CountyModerateInland flooding
Rockingham CountyModerateInland flooding
Merrimack CountyLowInland flooding
Strafford CountyLowInland flooding
Grafton CountyModerateInland flooding
Cheshire CountyLowInland flooding
Belknap CountyLowInland flooding
Carroll CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Rockingham CountyModerate33
York County, MEModerate38
Merrimack CountyLow27
Belknap CountyLow28
Carroll CountyLow34

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.