Overview

• Peru’s geophysical institute reported a magnitude 3.7 quake at 5:05 a.m. local time near Zorritos, Tumbes, at 22 km depth, felt at intensity II–III with no damage.
• Mexico’s seismological service logged multiple early‑morning quakes on October 8 across Chiapas, Oaxaca and Guerrero, peaking near Ciudad Hidalgo at about M5.0.
• SASMEX sirens did not sound because the events did not meet activation thresholds that factor distance and magnitude, such as roughly M6 beyond 350 km or above M5 within 250–350 km.
• Mexico’s civil protection agency ruled out the generation of a tsunami affecting national coasts, and no significant impacts were reported locally.
• Peru’s IGP and risk officials emphasized preparedness and safer construction, noting the country’s high seismic exposure and advising emergency plans and ready‑to‑use supply kits.