OpenStreetMap
The world’s open, community-built geographic database, providing free editable vector map data to millions of global applications.
The USGS Earthquake Hazards Map is the global scientific standard for real-time seismic event tracking. Operated by the United States Geological Survey (USGS), this interactive portal streams telemetry from global seismograph networks, displaying earthquake epicenters, focal depths, magnitudes, and tectonic plate boundaries.
Key Seismic Monitoring Features
- Live Earthquake Stream: Automatically refreshed feed showing all M2.5+ earthquakes in the US and M4.5+ earthquakes globally.
- ShakeMap & Impact Analysis: Ground shaking intensity maps modeled on Modified Mercalli intensity scales and population exposure.
- Tectonic Fault Line Overlays: Detailed visualization of subduction zones, transform faults, and oceanic trenches (such as the Pacific Ring of Fire).
- Did You Feel It? (DYFI) Reports: Crowdsourced citizen science reports capturing localized shaking experiences.
Frequently Asked Questions
How quickly do earthquakes appear on the USGS map?
Automated detections appear within 1 to 3 minutes of ground motion, followed by seismologist-reviewed manual solutions within 15 minutes.
What does the color coding of circles represent?
Colors typically indicate how recently the earthquake occurred (e.g., past hour, past 24 hours, past week), while circle size reflects Richter/moment magnitude.
Is the USGS earthquake data open to developers?
Yes. The USGS provides free public GeoJSON, ATOM, and CSV real-time feeds with zero authentication required.
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