M4.9 Earthquake 9 km SSW of San Miguel Totolapan, Mexico — September 26, 2024
2024-09-26 19:03:01 UTC (2024-09-26) · approx. 12:03 PM UTC-7 local
Felt by 12 people across nearby locations. Maximum shaking intensity MMI 4.0 (moderate).
On September 26, 2024 at 19:03 UTC, a magnitude 4.9 shallow crustal earthquake struck 9 km SSW of San Miguel Totolapan, Mexico, at a depth of 67.1 km and coordinates 18.0789°, -100.4132°. The earthquake was reported felt by 12 peopleacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 4.0 (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 147 seismic stations with good location accuracy and was assigned a USGS significance rating of 373, placing it among routine seismic activity. The nearest populated place is Corral Falso (population 3,123).
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 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 12 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 | 5,344,371 |
| MMI 4 | light | 199,644 |
Earthquake Details
-100.4132°E
Technical Information
Common Questions
How strong was the magnitude 4.9 earthquake near San Miguel Totolapan, Mexico?
The magnitude 4.9 earthquake that struck 9 km SSW of San Miguel Totolapan, Mexico on September 26, 2024 at 19:03 UTC had a depth of 67.1 km. It was felt by 12 people with maximum shaking intensity of MMI 4.0 (moderate). For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 18.0789°, -100.4132°, which is 9 km SSW of San Miguel Totolapan, Mexico. The nearest populated place is Corral Falso (population 3,123). View all earthquakes in Mexico.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days 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 4.9 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us7000ngme). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, September 26, 2024). M4.9 Earthquake 9 km SSW of San Miguel Totolapan, Mexico — September 26, 2024. Retrieved December 6, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000ngme/