Dover, New Hampshire: natural disaster risk
How exposed Dover is to floods, storms and other hazards, from FEMA and NOAA records for Strafford County.
Dover is a city of 33,364 people in Strafford County, New Hampshire. FEMA's National Risk Index rates Strafford County relatively low for natural hazards overall, lower than most of the US. The costliest hazards there are inland flooding, earthquake and hurricane, with about $29.1 million in expected losses a year across the county. The weather service has logged 260 storm reports in the county since 1953, including 7 tornadoes and 20 floods. NOAA hurricane records show 4 hurricanes and 17 tropical storms passing within 65 miles of the county's center. About 0.6% of homes in the county carry federal flood insurance.
Risk figures are for Strafford County. FEMA National Risk Index December 2025; NOAA Storm Events; US Census Bureau ACS 2020 to 2024. Updated November 6, 2026.
Top risks in Dover
Full Strafford County report ›- 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 hazards
| Hazard | Rating | A year |
|---|---|---|
| Inland flooding | $21M | |
| Earthquake | $2M | |
| Hurricane | $1M | |
| Tornado | $1M | |
| Ice storm | $951K | |
| Cold wave | $861K | |
| Lightning | $715K | |
| Strong wind | $549K | |
| Drought | $509K | |
| Heat wave | $442K | |
| Hail | $88K | |
| Winter weather | $75K |
Homes in Dover
Older homes and mobile homes usually take more damage in storms, floods and earthquakes. Ask about roof age, flood history and retrofits before you buy or rent.
Strongest tornadoes in Strafford County
More cities in Strafford County
Other cities in New Hampshire
All ›Common questions about Dover
Is Dover safe from natural disasters?
Dover is in Strafford County, which FEMA's National Risk Index rates relatively low overall, lower than most of the US. The biggest hazards are inland flooding, earthquake, hurricane. No place is free of risk, so check the flood map and insurance for any home you consider.
What natural disasters happen in Dover?
By expected yearly losses in Strafford County, the top hazards are inland flooding (Moderate), earthquake (Low), hurricane (Low). Strafford County has been part of 23 federal disaster or emergency declarations for natural events.
Does Dover get tornadoes?
Yes. NOAA records list 7 tornadoes in Strafford County since 1950; the strongest was an F2 tornado on June 22, 1981. FEMA rates tornado risk in the county low.
Do I need flood insurance in Dover?
Standard home insurance does not cover floods. In Strafford County, about 0.6% of homes have federal flood insurance, and FEMA rates inland flooding risk moderate. Check the FEMA flood map for your address and get a quote even outside a high-risk zone.