M4.1 Earthquake 172 km SSE of Amahai, Indonesia — June 23, 2021
2021-06-23 19:17:13 UTC (2021-06-23) · approx. 4:17 AM UTC+9 local
On June 23, 2021 at 19:17 UTC, a magnitude 4.1 intermediate depth earthquake struck 172 km SSE of Amahai, Indonesia, at a depth of 230.4 km and coordinates -4.8382°, 129.3398°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
129.3398°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Amahai, Indonesia?
The magnitude 4.1 earthquake that struck 172 km SSE of Amahai, Indonesia on June 23, 2021 at 19:17 UTC had a depth of 230.4 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000ep5d). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, June 23, 2021). M4.1 Earthquake 172 km SSE of Amahai, Indonesia — June 23, 2021. Retrieved August 27, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000ep5d/