Public Dataset

USGS Earthquake Catalog

The USGS Earthquake Hazards Program API provides real-time and historical earthquake data worldwide via the FDSN Event Web Service. Returns detailed event data including magnitude, location, depth, significance, tsunami alerts, felt reports, and alert levels. Supports GeoJSON, CSV, KML, QuakeML, and XML output formats. No API key required and no rate limits.

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What You Can Query

You can search earthquakes by date range, magnitude range, geographic bounding box, or radius from a point (query endpoint), and get counts of matching events without downloading full records (count endpoint). Results include magnitude, precise coordinates and depth, felt reports, tsunami flags, and PAGER alert levels.

What You Can Do

Monitoring recent earthquake activity in a specific region

Analyzing historical seismic trends by magnitude and location

Assessing earthquake risk for real estate or insurance underwriting

Tracking tsunami-associated earthquake events in the Pacific

Studying earthquake frequency and depth patterns over time

Building real-time seismic activity dashboards and alerts

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