M4.9 Earthquake 105 km S of Matavai, Samoa — April 27, 2024
2024-04-27 17:23:09 UTC (2024-04-27) · approx. 6:23 AM UTC-11 local
On April 27, 2024 at 17:23 UTC, a magnitude 4.9 shallow crustal earthquake struck 105 km S of Matavai, Samoa, at a depth of 10.0 km and coordinates -14.9705°, -171.8184°. This earthquake was detected by 54 seismic stations with good location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.
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.
Earthquake Details
-171.8184°E
Technical Information
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Common Questions
How strong was the magnitude 4.9 earthquake near Matavai, Samoa?
The magnitude 4.9 earthquake that struck 105 km S of Matavai, Samoa on April 27, 2024 at 17:23 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -14.9705°, -171.8184°, which is 105 km S of Matavai, Samoa.
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.
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Location
Authoritative source: USGS event page (event ID: us6000mufa). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, April 27, 2024). M4.9 Earthquake 105 km S of Matavai, Samoa — April 27, 2024. Retrieved July 2, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000mufa/