Overview
- The Servicio Sismológico Nacional recorded a series of shallow, moderate earthquakes off Chiapas between July 22 and July 23 with preliminary magnitudes clustered between 4.3 and 4.7 and focal depths around 10–16 kilometers.
- The Instituto Geofísico del Perú reported a separate, deeper M4.1 beneath Ricardo Palma, Lima on July 22 that originated near 101 kilometers depth, which typically reduces surface shaking compared with shallower quakes of similar size.
- Mexican and Peruvian seismological agencies have issued successive bulletins as they refine epicenters and magnitudes, with media updates reflecting those routine revisions.
- Local protection and civil-defense units said they have found no reports of major damage or casualties and continue inspections while advising the public to confirm information through official channels.
- The events reflect ongoing motion where the Cocos Plate subducts beneath southern Mexico and underscore that shallow shocks can be felt more strongly near the coast, so authorities are watching for aftershocks and urging preparedness measures such as evacuation routes and emergency kits.