Overview
- The Servicio Sismológico Nacional recorded multiple offshore earthquakes near Chiapas between July 28 and July 30, with a preliminary largest magnitude of 4.6 reported on Thursday.
- Protection Civil teams carried out preventive inspections in coastal municipalities and reported no significant damage or injuries in initial checks.
- The SSN published technical details for each event, including times, coordinates and depths, and marked several reports as preliminary pending further station data.
- Peru’s Instituto Geofísico also logged regional activity on Thursday, including two 3.7 quakes and a 5.7 event near Pucallpa that produced intensity IV there with no major damage reported.
- The events reflect regular subduction-zone seismicity off the southern Pacific coast where the Cocos plate interacts with continental plates, and officials say residents should follow official channels and basic preparedness steps while monitoring for possible aftershocks or data revisions.