M6.3 Earthquake near Offshore Chiapas, Mexico — July 14, 2023
2023-07-14 09:29:00 UTC (2023-07-14) · approx. 3:29 AM UTC-6 local
Felt by 34 people across nearby locations. Maximum shaking intensity MMI 4.2 (moderate).
On July 14, 2023 at 09:29 UTC, a magnitude 6.3 shallow crustal earthquake struck near Offshore Chiapas, Mexico, at a depth of 34.0 km and coordinates 14.9004°, -93.9011°. The earthquake was reported felt by 34 peopleacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 4.2 (moderate). The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 358 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 637, making it a moderate-impact event. The nearest populated place is Doctor Belisario Dominguez (La Barra) (population 1,043).
Physical scale: An earthquake of magnitude 6.3 releases seismic energy equivalent to roughly 43 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 13 km — a useful intuition for the size of the slip patch on the fault.
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
Nearest Populated Places
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 34 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Population exposure (USGS PAGER)
Estimated population that experienced each level of shaking. Based on the USGS PAGER rapid impact assessment, which combines ShakeMap output with global population grids.
| Shaking intensity (MMI) | Description | Population exposed |
|---|---|---|
| MMI 3 | weak | 818,809 |
| MMI 4 | light | 2,748,605 |
Earthquake Details
-93.9011°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 6.3 earthquake near Offshore Chiapas, Mexico?
The magnitude 6.3 earthquake that struck near Offshore Chiapas, Mexico on July 14, 2023 at 09:29 UTC had a depth of 34.0 km. It was felt by 34 people with maximum shaking intensity of MMI 4.2 (moderate). For context, this was a strong earthquake capable of causing significant damage.
Where did the earthquake occur?
The earthquake epicenter was located at 14.9004°, -93.9011°, which is near Offshore Chiapas, Mexico. The nearest populated place is Doctor Belisario Dominguez (La Barra) (population 1,043). View all earthquakes in Mexico.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 6.3 earthquakes can continue for weeks to months and gradually diminish over time.
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 6.3 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us7000kfnc). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, July 14, 2023). M6.3 Earthquake near Offshore Chiapas, Mexico — July 14, 2023. Retrieved September 16, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kfnc/