A magnitude 5.1 earthquake occurred approximately 99 kilometers west-southwest of Puerto Madero, Mexico, at a depth of roughly 10 kilometers, according to the U.S. Geological Survey. The relatively shallow depth means shaking was likely felt across the surrounding region.
Magnitude 5.1 earthquakes are considered moderate. People in the immediate area would have felt noticeable shaking that could last several seconds. Unsecured objects may have shifted, and some structural damage is possible in older or poorly constructed buildings, though widespread devastation is unlikely at this magnitude.
Who Is Affected
Residents and visitors within roughly 50-100 km of the epicenter are most likely to have experienced shaking. Puerto Madero sits in Chiapas state on Mexico’s southwestern coast—a seismically active region. Communities in that area should assess any damage and check in with neighbors, especially those in older structures.
This event is a reminder that earthquake preparedness is ongoing, whether you live in a high-risk zone or not.
What to Do Now: If you felt shaking, check your home and immediate surroundings for damage, particularly to chimneys, walls, and utilities. Document any structural concerns. Second, review your household emergency kit—ensure you have water, first aid supplies, flashlights, and a battery-powered or hand-crank radio. Third, identify your safe spots in each room (sturdy table, interior wall away from windows) and discuss your family’s earthquake plan, especially if you have children or elderly relatives.
Aftershocks often follow moderate earthquakes, so remain alert over the coming hours and days. Aftershocks are typically smaller but can occasionally reach similar magnitudes.
For ongoing monitoring of seismic activity and space weather threats, visit the NOAA data dashboard at https://survivalsiren.com/spaceweather/feed.html.
Source: USGS
