TremorAtlas is an independent real-time visualization of global earthquake activity. The site aggregates earthquake event data from multiple international seismic monitoring networks and presents it in a unified global map designed for exploration and situational awareness.
The goal of TremorAtlas is to make it easy to observe how earthquakes occur around the world — from major seismic events to the constant background activity that is normally invisible.
TremorAtlas does not operate its own seismic sensors. Instead, it collects earthquake reports from several established seismic data providers.
Current data sources include:
These agencies publish earthquake detections through open seismic data services. TremorAtlas periodically queries these services and combines the results into a single dataset.
Because the same earthquake can be reported by multiple agencies, TremorAtlas performs automated deduplication and merging of events based on time and location. When duplicate reports are detected, the site combines them into a single event and keeps track of which agencies reported it.
The system also normalizes differences in magnitude type, depth reporting, and location naming so that events from different networks can be displayed consistently.
While TremorAtlas uses authoritative data sources, the information shown on this site may not always be complete, final, or perfectly synchronized with the original agencies.
Earthquake parameters such as magnitude, depth, and location are often revised after the initial detection. TremorAtlas may display preliminary values that later change in official catalogs.
Additionally, there may be delays, temporary outages, or inconsistencies between data providers.
TremorAtlas is an informational and educational visualization tool.
It is not an official earthquake monitoring system and should not be relied upon for emergency response, disaster management, safety decisions, or risk assessment.
For authoritative earthquake information and warnings, consult official seismic agencies such as USGS, EMSC, and national geological services in your region.
Author: Joachim Voldseth
Contact: tremoratlas@proton.me