M4.6 Earthquake 74 km N of Amahai, Indonesia — January 29, 2022
2022-01-29 23:08:26 UTC (2022-01-29) · approx. 8:08 AM UTC+9 local
On January 29, 2022 at 23:08 UTC, a magnitude 4.6 shallow crustal earthquake struck 74 km N of Amahai, Indonesia, at a depth of 10.0 km and coordinates -2.6656°, 128.9850°.
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.
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
128.9850°E
Technical Information
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Common Questions
How strong was the magnitude 4.6 earthquake near Amahai, Indonesia?
The magnitude 4.6 earthquake that struck 74 km N of Amahai, Indonesia on January 29, 2022 at 23:08 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 -2.6656°, 128.9850°, which is 74 km N of Amahai, Indonesia. View all earthquakes in Indonesia.
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.
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 4.6 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us7000ggav). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, January 29, 2022). M4.6 Earthquake 74 km N of Amahai, Indonesia — January 29, 2022. Retrieved April 15, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000ggav/