Overview
- The national seismic service logged a cluster of low-magnitude earthquakes off Chiapas on Saturday and Sunday, Sept. 26–27, 2026.
- Recorded magnitudes ranged about 3.5 to 3.8 with focal depths varying from roughly 5 km to 86 km and epicenters reported near Tonalá, Mapastepec and Pijijiapan.
- Authorities and the SSN report no injuries or structural damage from the events after initial local monitoring and continue routine surveillance of seismic activity.
- Experts linked the tremors to ongoing interaction between the Cocos plate and regional plates, noting that small, frequent quakes are typical for the Chiapas Pacific margin.
- Civil protection agencies urged residents to follow official SSN and Protección Civil channels, keep emergency kits and evacuation plans ready, and avoid spreading unverified reports.