Natural Disaster Risk in Sullivan

Natural Hazard Profile: Sullivan, New Hampshire

Located along the northeastern Atlantic Seaboard in Cheshire County, Sullivan is a small community of about 687. The humid continental climate that characterizes this part of New Hampshire — marked by long, cold winters and brief, warm summers — directly influences the types and severity of natural hazards present, making Sullivan a community where hazard awareness has real practical value.

Sullivan's overall natural disaster risk is rated 5.8/10 (Moderate) by FEMA's National Risk Index. The threat of avalanche is the primary natural hazard here, with winter snowpack instability on mountain terrain posing risks to roads, structures, and outdoor recreation activities. Secondary hazards include hurricane and landslide.

Relative to other U.S. communities, Sullivan's natural disaster risk is above the U.S. national average of 4.5/10, slightly below the 6.2/10 state average. The hazard distribution here is led by avalanche and hurricane, as measured by FEMA across Cheshire County. While city-specific sub-county variation exists, these scores represent the best available federal risk estimate.

With a moderate risk rating, Sullivan residents are well-served by maintaining standard preparedness practices — an emergency supply kit, awareness of local hazard seasonality, and insurance that covers the top local risks. Periodic review of coverage for avalanche is recommended.