Overview
- Official networks logged several small quakes on Friday, September 11, 2026, across southern, central and northwestern Mexico and southern Peru, with the largest measured at magnitude 4.1 near Cintalapa, Chiapas.
- The strongest event was the M4.1 near Cintalapa at a focal depth of 173 km, while other confirmed quakes included M3.8 near Vítor, Arequipa (15 km depth), M3.9 southeast of San Felipe, Baja California (4 km), and multiple M3–3.8 events in Oaxaca, Michoacán and San Luis Potosí.
- Emergency agencies and national seismological services issued rapid technical bulletins, conducted routine checks and reported no injuries or structural damage in initial assessments.
- Depth mattered for how the quakes were felt on the surface: deeper events like the 173 km Cintalapa quake tend to cause weaker surface shaking, whereas shallow events under 30 km can be felt more strongly.
- Authorities urged the public to follow official channels for updates, keep emergency kits and family plans ready, and noted that this distributed, low‑magnitude activity fits background seismic patterns while monitoring continues for any replicas or changes.