M4.0 Earthquake 63 km ESE of Ambon, Indonesia — March 29, 2023
2023-03-29 23:57:18 UTC (2023-03-29) · approx. 8:57 AM UTC+9 local
On March 29, 2023 at 23:57 UTC, a magnitude 4.0 intermediate depth earthquake struck 63 km ESE of Ambon, Indonesia, at a depth of 152.8 km and coordinates -3.9185°, 128.7112°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.

Earthquake Details
128.7112°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Ambon, Indonesia?
The magnitude 4.0 earthquake that struck 63 km ESE of Ambon, Indonesia on March 29, 2023 at 23:57 UTC had a depth of 152.8 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 4.0 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000k1rx). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, March 29, 2023). M4.0 Earthquake 63 km ESE of Ambon, Indonesia — March 29, 2023. Retrieved January 18, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000k1rx/