Overview
- Mexico’s National Seismological Service reported at least 2,400 aftershocks by the night of January 4–5, with the largest at magnitude 4.7 and a magnitude 4.6 recorded Sunday morning near San Marcos.
- Guerrero’s risk and civil protection agency reported about 700 homes with medium damage and 43 with severe damage in San Marcos, where traditional adobe and tile-roof buildings were especially affected.
- National Civil Protection identified 24 Guerrero municipalities with some level of impact, and the Defense and Navy ministries kept DN-III-E and Plan Marina activated for assistance.
- Officials maintained the preliminary toll at two fatalities from the January 2 mainshock, and inspections continued with no major new damage attributed to the subsequent aftershocks.
- Peru’s geophysical institute logged ongoing low-to-moderate seismicity, including a magnitude 4.5 off Ica on January 3 that did not trigger a tsunami alert and a magnitude 3.7 near Chilca on January 5.