The Servicio Sismológico Nacional (SSN, Mexican National Seismological Service) has a history of 107 yrs. In the last 13 yrs, the SSN has gone through a significant modernization process, involving the installation of new broadband stations with colocalized accelerometers, seismometers, and Global Positioning System (GPS) receivers. New collaborations with other Mexican regional networks helped increase the number of stations from which the SSN receives data. In this article, we present the current backbone broadband network configuration; data flow from the stations to the automatic and manual publication of the earthquake location and magnitude; and the seismic catalog, which includes more than 105,000 events since 1900. A clear example of the successful performance of this network is the recording of the 8 September 2017 Mw 8.2 earthquake, located in the Gulf of Tehuantepec. We present the signals of 52 of the 63 SSN broadband stations that recorded the event in real time. This earthquake represents the largest recorded in Mexico by a comprehensive national network.

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