Natural Disaster Risk in Lewes

Natural Hazard Profile: Lewes, Delaware

Located along the mid-Atlantic coast in Sussex County, Lewes is a city of approximately 31,938 residents. The humid subtropical climate that characterizes this part of Delaware — marked by moderately hot summers and mild winters with coastal storm exposure — directly influences the types and severity of natural hazards present, making Lewes a community where hazard awareness has real practical value.

Lewes's overall natural disaster risk is rated 7.9/10 (High) by FEMA's National Risk Index. Coastal flood risk defines the local natural hazard environment, with sea-level rise trends gradually increasing the frequency of tidal flooding events alongside storm surge threats. Secondary hazards include cold wave and hurricane.

Relative to other U.S. communities, Lewes's natural disaster risk is well above the U.S. national average of 4.5/10, near the 7.7/10 state average. The hazard distribution here is led by coastal flood and cold wave, as measured by FEMA across Sussex County. While city-specific sub-county variation exists, these scores represent the best available federal risk estimate.

With a high natural disaster risk rating, Lewes residents benefit from taking preparedness seriously. Reviewing insurance coverage for coastal flood 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.