ANSS Comprehensive Earthquake Catalog (ComCat)
The ANSS Comprehensive Earthquake Catalog (ComCat) contains earthquake source parameters and related products contributed by seismic networks around the world.
Search The Catalog View Latest Earthquakes
Explore ComCat
Contribute Data
Use the Product Distribution Layer (PDL) to contribute earthquake data and products to USGS real-time systems and ComCat.
Access Earthquake Data
Choose an interactive search, web service, real-time feed, notification service, or developer tool.
Data Availability
Review catalog date ranges by contributing seismic network.
Data Products
Learn how earthquake products are associated, versioned, and preferred.
Explore Catalog Sources
See the authoritative and historical catalogs that contribute events to ComCat, including their time periods and geographic regions.
Browse Real-Time Contributors
Find the seismic networks and agencies that contribute real-time event parameters and products.
Contribute Or Receive Earthquake Data
Organizations can use the Product Distribution Layer (PDL) to send products to and receive products from the USGS.
