Moderate Seismic Activity Shakes Southern Mexico, 4.2 Magnitude Earthquake Recorded Near Chiapas
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A 4.2 magnitude earthquake struck southwest of Mapastepec, Chiapas, on Monday, October 13, 2025, at 12:14:46 hours local time, according to the National Seismological Service (SSN).The event is the latest in a period of moderate seismic activity across several regions of Mexico, though most tremors have been of low magnitude.
Earthquake Details and Location
The epicenter of the quake was located 61 kilometers southwest of mapastepec, Chiapas, at a latitude of 14.97 and longitude -93.19. The depth of the earthquake was recorded at 51 kilometers,classifying it as a moderate-depth event. While a 4.2 magnitude earthquake can be felt, it typically does not cause notable damage.
The SSN’s Morning Seismicity Report indicates that, leading up to Monday, the majority of recorded earthquakes were below a magnitude of 4.0. The area experiencing the most frequent seismic events was near San José del Cabo, Baja California Sur, with numerous aftershocks ranging from 1.0 to 1.9. these aftershocks were shallow, resulting in perceptible shaking but without reports of damage.
Tremors of slightly larger magnitudes – between 2.8 and 3.9 – were also reported in several other areas, including:
- Pichucalco and Tonalá (Chiapas)
- Acapulco and san Marcos (Guerrero)
- Casimiro Castillo (Jalisco)
- La Mira (Michoacán)
- Salina Cruz (Oaxaca)
The largest movement recorded during the analyzed period was a 3.9 magnitude earthquake 55 kilometers southwest of Salina Cruz, Oaxaca, at a depth of approximately 74 kilometers. This event, like others, was expected to be felt locally but not to cause widespread damage.
Mexico’s Seismic Landscape
According to the National Seismological Service, earthquakes below magnitude 4.0 are common occurrences in Mexico. This is due to the country’s unique geological location, situated on the intersection of five major tectonic plates: the Caribbean, North America, Pacific, Rivera, and Cocos plates. The constant interaction between these plates creates a highly seismic zone.
A senior official stated that the institution recommends the public consult official sources for up-to-date information and adhere to civil protection guidelines in the event of seismic activity. The ongoing activity underscores the importance of preparedness and awareness in a region prone to earthquakes.
