Natural Disaster Risk in Lyme

Natural Hazard Profile: Lyme, New Hampshire

Lyme is a small community of about 1,710 in Grafton County, along the northeastern Atlantic Seaboard. The area experiences long, cold winters and brief, warm summers, with heavy nor'easter snowstorms shaping the pattern of natural hazards that residents encounter. Understanding the local risk profile is essential for anyone living in, moving to, or owning property in Lyme.

FEMA rates Lyme's composite natural disaster risk at 6.2 out of 10 — high risk. The area faces significant landslide risk, where mountainous topography and saturated soils during wet periods combine to create hazardous mass movement conditions. Residents should also account for avalanche and winter risk in their preparedness planning.

Lyme's risk score, near the 6.2/10 state average and above the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA for Grafton County, the highest-scoring are landslide, avalanche, and winter. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

With a high natural disaster risk rating, Lyme residents benefit from taking preparedness seriously. Reviewing insurance coverage for landslide and secondary hazards, registering for emergency alerts, and maintaining a household emergency kit are practical steps that can significantly reduce impact during a major event.