Overview
- The Servicio Sismológico Nacional reported a shallow magnitude 7.4 quake about 135 km southwest of Ciudad Hidalgo on Friday morning with an approximate depth of 10 km.
- The mainshock set off an intense aftershock sequence with 91 replicas recorded by 1:00 p.m. the same day and a largest aftershock of magnitude 6.5.
- The Secretaría de Marina issued a preventive tsunami alert minutes after the quake that the national Tsunami Warning Center later canceled after sea‑level analysis showed no dangerous waves.
- Preliminary inspections by federal and Chiapas Protección Civil teams found mostly minor damage in coastal municipalities, including cracks in homes, damage to two schools, some gas leaks, and three people with light injuries but no fatalities.
- Chiapas sits at a complex triple‑plate junction that produces frequent shallow quakes, officials say, and authorities warn aftershocks may continue for days to weeks so monitoring and building inspections remain active.