On November 20, 2025, three consecutive microearthquakes struck Naucalpan in Mexico state and were felt in parts of Mexico City. The tremors, with magnitudes between 1.6 and 2.5, occurred in the afternoon and led to evacuations in some offices. No major damage has been reported so far.
On the afternoon of Thursday, November 20, 2025, the National Seismological Service (SSN) recorded three microearthquakes in the municipality of Naucalpan, Mexico state. The first struck at 16:36, with a magnitude of 2.3, epicenter in Naucalpan de Juárez (latitude 19.45, longitude -99.25, depth 1 km). Seven minutes later, at 16:43, the second occurred, with magnitude 2.5. The third followed at 16:45, with magnitude 1.6, also in the same area.
The tremors were felt in nearby Mexico City boroughs, such as Azcapotzalco and Miguel Hidalgo. On social media, users reported varied sensations: some described a 'jerk' or slight vibration, while others said it 'shook very strongly'. As a precaution, several offices and workplaces in Naucalpan evacuated their employees.
These microearthquakes are common in the Valley of Mexico, particularly in areas like Naucalpan, Huixquilucan, and Tlalnepantla, due to local superficial faults and the mountainous terrain in the western valley. They typically have magnitudes under 3.5 and originate at shallow depths (1-5 km), so they are only felt nearby. The SSN has not reported significant damage, and local government has issued no alerts on impacts.
The Seismic Alert (SASMEX) did not activate, as the system is designed for large earthquakes on the Pacific coast, not for low-magnitude local microearthquakes that pose no major risk and occur too close for timely warnings.
Additionally, the SSN recorded a magnitude 4.1 earthquake in Veracruz, with epicenter northwest of Allende, at 16:39, but this is not directly related to the Naucalpan events.