Natural Disaster Risk in San Juan

Natural Hazard Profile: San Juan, PR

Located near the Atlantic Coast of the southeastern United States in San Juan County, San Juan is a city of 92,284 residents. The temperate continental climate that characterizes this part of PR — marked by a temperate continental climate with four seasons — directly influences the types and severity of natural hazards present, making San Juan a community where hazard awareness has real practical value.

FEMA rates San Juan's composite natural disaster risk at 2.2 out of 10 — low risk. Tsunami risk is the primary coastal hazard, driven by the area's proximity to seismically active offshore zones capable of generating ocean waves that inundate low-lying coastlines. Residents should also account for volcano and coastal flood risk in their preparedness planning.

Relative to other U.S. communities, San Juan's natural disaster risk is well below the U.S. national average of 4.5/10. The hazard distribution here is led by tsunami and volcano, as measured by FEMA across San Juan County. While city-specific sub-county variation exists, these scores represent the best available federal risk estimate.

San Juan carries a below-average natural disaster risk, reflecting fewer and less severe hazard exposures than typical U.S. communities. Even so, the area's primary risk — tsunami — warrants awareness and appropriate insurance coverage, as lower risk does not mean zero risk.