M4.6 Earthquake 52 km SW of Acajutla, El Salvador — September 28, 2023
2023-09-28 19:46:18 UTC (2023-09-28) · approx. 1:46 PM UTC-6 local
Felt by 3 people across nearby locations.
On September 28, 2023 at 19:46 UTC, a magnitude 4.6 shallow crustal earthquake struck 52 km SW of Acajutla, El Salvador, at a depth of 66.6 km and coordinates 13.2684°, -90.1755°. This earthquake was detected by 113 seismic stations with good location accuracy and was assigned a USGS significance rating of 327, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 3 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
Earthquake Details
-90.1755°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.6 earthquake near Acajutla, El Salvador?
The magnitude 4.6 earthquake that struck 52 km SW of Acajutla, El Salvador on September 28, 2023 at 19:46 UTC had a depth of 66.6 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 13.2684°, -90.1755°, which is 52 km SW of Acajutla, El Salvador.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000lbi6). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 28, 2023). M4.6 Earthquake 52 km SW of Acajutla, El Salvador — September 28, 2023. Retrieved December 9, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lbi6/