Natural Disaster Risk in Bryn Mawr

Natural Hazard Profile: Bryn Mawr, Pennsylvania

Located along the northeastern Atlantic Seaboard in Delaware County, Bryn Mawr is a city of approximately 21,827 residents. The humid continental climate that characterizes this part of Pennsylvania — marked by cold winters, warm summers, and four distinct seasons — directly influences the types and severity of natural hazards present, making Bryn Mawr a community where hazard awareness has real practical value.

FEMA rates Bryn Mawr's composite natural disaster risk at 7.8 out of 10 — high risk. Winter weather is the dominant natural hazard, with the area facing heavy snowfall, ice accumulation, and bitter cold that can immobilize infrastructure and create dangerous travel conditions. Residents should also account for heat and wind risk in their preparedness planning.

Relative to other U.S. communities, Bryn Mawr's natural disaster risk is well above the U.S. national average of 4.5/10, considerably above the 5.9/10 state average. The hazard distribution here is led by winter and heat, as measured by FEMA across Delaware County. While city-specific sub-county variation exists, these scores represent the best available federal risk estimate.

With a high natural disaster risk rating, Bryn Mawr residents benefit from taking preparedness seriously. Reviewing insurance coverage for winter 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.