Mexico Sets Sept. 19 National Drill to Test 8.1 Quake Scenario and Cell-Phone Alerts

The Segundo Simulacro Nacional 2025 is scheduled for Sept. 19 at 12:00 CST, using an 8.1‑magnitude earthquake hypothesis centered off Lázaro Cárdenas, Michoacán at 15 km depth with specified coordinates. Authorities will activate 14,491 public loudspeakers nationwide and conduct Mexico’s first nationwide seismic alert test via cell phones by presidential instruction. Mexico City plans to deploy about 5,000 government officials for the exercise, and the capital reports more than 13,000 seismic speakers with functionality reported up to 99%. The Education Ministry says classes will not be suspended that day, and buildings and institutions can register to participate until Sept. 18 at 11:59. At least 17 coastal states will incorporate a hurricane scenario as part of the multi‑hazard drill.

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