Winter Storm tops the risk list, and FEMA has declared New Hampshire a disaster area 63 times since 1953. Here's what to prepare for — and how.
New Hampshire's disaster profile is shaped by its northern latitude, rugged terrain, and proximity to the Atlantic coast. Winter storms pose the greatest recurring threat, driven by nor'easters and arctic systems that can paralyze the state for days. The White Mountains funnel and amplify storms, while low-lying river valleys across the state remain chronically vulnerable to flooding. Hurricanes are a lower-order risk, though their remnants can deliver destructive rainfall. FEMA has issued 48 major disaster declarations for New Hampshire, with severe storms accounting for the single largest share. The Ice Storm of 1998 left hundreds of thousands of residents without power for weeks across northern New England, causing widespread damage to infrastructure and trees. In 2006, severe flooding along the Merrimack and Contoocook rivers forced evacuations and caused significant property losses across central and southern communities. More recently, a severe storm and flooding event in 2024 earned another major federal declaration, a reminder that these threats remain active. New Hampshire's rivers rise quickly after heavy rain or rapid snowmelt, giving residents little warning time. For people preparing today, that history points toward three priorities: maintaining a multi-day power-outage kit for winter, knowing your flood zone status before storm season, and registering for the state's wireless emergency alert system so official warnings reach you without delay. Preparedness in New Hampshire is not abstract — it is the direct lesson of events that have repeatedly tested communities across every region of the state.
Extended winter storms knock out power for days — prepare to survive without heat.
Flooding is the most common US disaster — just 6 inches of moving water can knock a person down.
Hurricanes bring storm surge, wind damage, and flooding that can cut off evacuation routes.
This region faces the state's most severe winter storms and blizzard conditions, with extreme cold, heavy snowfall, and ice events that regularly isolate mountain communities.
The Connecticut River corridor is prone to river flooding, particularly during spring snowmelt and heavy rain events that cause the river to overflow into adjacent towns.
The densely populated Merrimack River corridor experiences significant flood risk, as the river can rise rapidly after storms and has driven major federal disaster declarations.
New Hampshire's short coastline and tidal estuaries are most exposed to storm surge, coastal flooding, and the strongest wind impacts from hurricanes and nor'easters.
Hilly terrain and smaller river systems here are susceptible to flash flooding and ice storms, with rural road infrastructure particularly vulnerable to winter weather damage.
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The state's official emergency management agency — alerts, shelter info, and disaster assistance.
New Hampshire residents can sign up for location-specific emergency notifications through the NH Alerts system at NH.gov, which delivers warnings by text, email, or phone call alongside automatic Wireless Emergency Alerts broadcast to all mobile devices in affected areas.
What natural disasters is New Hampshire most at risk for?
Winter storms are New Hampshire's highest-rated hazard, with nor'easters and ice storms capable of causing prolonged power outages and dangerous travel. Flooding is a medium-level risk affecting river valleys statewide. Hurricanes are a lower risk but can still deliver damaging winds and heavy rainfall, especially in the seacoast area.
How can I find out if my home is in a flood zone in New Hampshire?
FEMA's Flood Map Service Center at msc.fema.gov allows you to search any address for its official flood zone designation. New Hampshire residents can also contact their local floodplain administrator, typically housed in the town or city planning or building department, for guidance on local flood risk and insurance requirements.
What should I include in a winter storm emergency kit for New Hampshire?
A New Hampshire winter kit should cover at least 72 hours of supplies: water, non-perishable food, a battery or hand-crank radio, flashlights, extra batteries, warm blankets, a manual can opener, any prescription medications, and a backup heating source used only with proper ventilation. The 1998 ice storm showed that outages can last weeks.
Does New Hampshire have a statewide emergency alert system I can sign up for?
Yes. New Hampshire uses the NH Alerts system, operated through the Division of Homeland Security and Emergency Management, which delivers warnings via text, email, and phone call. Residents can register at NH.gov to receive location-specific alerts. All cell phones in an affected area also automatically receive Wireless Emergency Alerts from FEMA without registration.
Knowing your risks is step one. Two minutes with the readiness quiz tells you exactly where your preparation stands — and the free guide walks you through closing the gaps.