Overview

• The Servicio Sismológico Nacional has recorded only routine, low-magnitude tremors in Mexico since mid-July, indicating stable seismic conditions
• The Sistema de Alerta Sísmica Mexicano network of 96 coastal and inland sensors continues to deliver early quake warnings
• On April 29 at 11:30 AM, the Coordinación Nacional de Protección Civil executed a successful nationwide drill with real-time alerts and evacuations
• Emergency planners are now refining evacuation routes, communication channels and sensor calibrations ahead of the September exercise
• In the past 24 hours the USGS logged 13 earthquakes above magnitude 2.5 across North America, including a 4.0-magnitude event near Olancha, California