Overview

• At 12:00 p.m. local time, the Second Simulacro Nacional 2025 ran a magnitude 8.1 quake scenario centered near Lázaro Cárdenas, Michoacán.
• Roughly 80 million phones received a test message via cell broadcast that works without apps, internet or prepaid balance.
• The Alerta Sísmica also sounded through about 14,491 public loudspeakers and broadcast channels as offices, schools and transit executed evacuation protocols.
• Authorities conducted multi-hazard exercises nationwide, including tsunami, hurricane and urban-fire scenarios, alongside large SEDENA and SEMAR deployments.
• Reports noted that some phones and speakers did not trigger, and agencies began collecting results for after-action evaluation and fixes.