Advanced National Seismic System

The Advanced National Seismic System (ANSS) is a collaboration of the United States Geological Survey (USGS) and regional, state, and academic partners that collects and analyzes data on significant earthquakes to provide near real-time (generally within 10 to 30 minutes[1]) information to emergency responders and officials, the news media, and the public.

[2] Such information is used to anticipate the likely severity and extent of damage, and to guide decisions on the responses needed.

[5] The ANSS provides a range of products and services:[6] These can be accessed at the USGS Earthquake page: https://earthquake.usgs.gov/earthquakes/.

As of 2023 the following networks were participating in the ANSS:[7] Additional stations are operated by the USGS Albuquerque Seismological Laboratory (ASL).

The NEIC receives additional data from about 3,000 stations around the world, and provides backup if a regional network is unable to communicate.