M4.2 Earthquake 152 km SSW of Ambon, Indonesia — April 18, 2023
2023-04-18 20:37:36 UTC (2023-04-18) · approx. 5:37 AM UTC+9 local
On April 18, 2023 at 20:37 UTC, a magnitude 4.2 deep-focus earthquake struck 152 km SSW of Ambon, Indonesia, at a depth of 340.0 km and coordinates -5.0329°, 127.8561°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
127.8561°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near Ambon, Indonesia?
The magnitude 4.2 earthquake that struck 152 km SSW of Ambon, Indonesia on April 18, 2023 at 20:37 UTC had a depth of 340.0 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000jvu6). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 18, 2023). M4.2 Earthquake 152 km SSW of Ambon, Indonesia — April 18, 2023. Retrieved July 3, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000jvu6/