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SSN Updates Epicenter of M5.3 Southern Mexico Quake to Southwest of Las Choapas

Mexico City's quake alert did not sound because activation thresholds were not met.

Overview

  • The National Seismological Service reported a magnitude 5.3 earthquake at 17:19 on November 2 and revised its location to 48 km southwest of Las Choapas, Veracruz, at a depth of 182 km after an initial placement near Matías Romero, Oaxaca.
  • The National Civil Protection Coordination activated emergency protocols and initiated preliminary assessments with state and municipal units following the event.
  • Civil Protection and fire authorities reported no injuries or significant damage as of the latest checks in the affected regions.
  • Sasmex confirmed no public alert for Mexico City because the energy detected in the first seconds did not exceed activation criteria, which typically trigger closer to magnitude 6 events.
  • The 5.3 quake followed a day of regional seismicity that included early‑morning tremors of magnitude 4.1 and 4.0 in Chiapas and four mid‑magnitude events recorded within an hour across Chiapas, Veracruz, and Oaxaca.