M4.9 Earthquake 66 km W of Banda Aceh, Indonesia — April 23, 2025
2025-04-23 04:27:38 UTC (2025-04-23) · approx. 10:27 AM UTC+6 local
On April 23, 2025 at 04:27 UTC, a magnitude 4.9 intermediate depth earthquake struck 66 km W of Banda Aceh, Indonesia, at a depth of 76.8 km and coordinates 5.5372°, 94.7287°. This earthquake was detected by 56 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.
The epicenter is located in Indonesia, a region characterized by the convergence of the Indo-Australian, Eurasian, and Philippine Sea plates, forming the Sunda-Banda arc system. The nearest mapped fault system is the Sunda megathrust. View all earthquakes in Indonesia.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
94.7287°E
Technical Information
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Common Questions
How strong was the magnitude 4.9 earthquake near Banda Aceh, Indonesia?
The magnitude 4.9 earthquake that struck 66 km W of Banda Aceh, Indonesia on April 23, 2025 at 04:27 UTC had a depth of 76.8 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 5.5372°, 94.7287°, which is 66 km W of Banda Aceh, Indonesia. View all earthquakes in Indonesia.
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 Indonesia had earthquakes this big before?
The largest recorded earthquake in Indonesia was the M9.1 Indian Ocean earthquake of December 26, 2004. Today's magnitude 4.9 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us7000pueh). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, April 23, 2025). M4.9 Earthquake 66 km W of Banda Aceh, Indonesia — April 23, 2025. Retrieved July 11, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pueh/