M5.1 Earthquake 33 km SSW of Puerto Madero, Mexico — July 17, 2026
2026-07-17 16:01:26 UTC (3 hours ago) · approx. 10:01 AM UTC-6 local
Aftershock of the M5.2 mainshock.
On July 17, 2026 at 16:01 UTC, a magnitude 5.1 shallow crustal earthquake struck 33 km SSW of Puerto Madero, Mexico, at a depth of 64.9 km and coordinates 14.4643°, -92.5836°. This earthquake was detected by 207 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 400, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 km — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.2 mainshock that occurred 35 minutes ago 67 km SW of Puerto Madero, Mexico. Since the mainshock, the USGS has recorded 4 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
The epicenter is located in Mexico, a region characterized by the Middle America Trench, where the Cocos Plate subducts beneath the North American Plate. The nearest mapped fault system is the Middle America Trench. View all earthquakes in Mexico.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
-92.5836°E
Technical Information
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Common Questions
How strong was the magnitude 5.1 earthquake near Puerto Madero, Mexico?
The magnitude 5.1 earthquake that struck 33 km SSW of Puerto Madero, Mexico on July 17, 2026 at 16:01 UTC had a depth of 64.9 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 14.4643°, -92.5836°, which is 33 km SSW of Puerto Madero, Mexico. View all earthquakes in Mexico.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.1 earthquakes can continue for days to weeks and gradually diminish over time.
Is this the same earthquake as the M5.2 one earlier?
No. This magnitude 5.1 earthquake is an aftershock of the larger magnitude 5.2 mainshock that occurred earlier 67 km SW of Puerto Madero, Mexico. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
Has Mexico had earthquakes this big before?
The largest recorded earthquake in Mexico was the M8.1 Chiapas earthquake of September 8, 2017. Today's magnitude 5.1 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us7000t1ep). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 17, 2026). M5.1 Earthquake 33 km SSW of Puerto Madero, Mexico — July 17, 2026. Retrieved July 17, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t1ep/