M5.4 Earthquake near off the coast of Central America — April 20, 2023
2023-04-20 10:55:31 UTC (2023-04-20) · approx. 4:55 AM UTC-6 local
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On April 20, 2023 at 10:55 UTC, a magnitude 5.4 shallow crustal earthquake struck near off the coast of Central America, at a depth of 10.0 km and coordinates 2.7147°, -84.3950°. The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 136 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 449, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.4 releases seismic energy equivalent to roughly 2 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 3.2 km — a useful intuition for the size of the slip patch on the fault.
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
Earthquake Details
-84.3950°E
Technical Information
Common Questions
How strong was the magnitude 5.4 earthquake near off the coast of Central America?
The magnitude 5.4 earthquake that struck near off the coast of Central America on April 20, 2023 at 10:55 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 2.7147°, -84.3950°, which is near off the coast of Central America.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.4 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us6000k5q8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 20, 2023). M5.4 Earthquake near off the coast of Central America — April 20, 2023. Retrieved July 3, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k5q8/