4.3

M4.3 Earthquake 251 km SSE of Ambon, IndonesiaMarch 15, 2026

2026-03-15 21:48:38 UTC (2026-03-15) · approx. 6:48 AM UTC+9 local

MagnitudeM4.3(mb)
Time21:48 UTC6:48 AM UTC+9
Depth269.2 kmintermediate depth
Coordinates-5.849°, 128.922°
Felt byNo felt reports
Status✓ Reviewed by USGS

On March 15, 2026 at 21:48 UTC, a magnitude 4.3 intermediate depth earthquake struck 251 km SSE of Ambon, Indonesia, at a depth of 269.2 km and coordinates -5.8493°, 128.9224°.

Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -5.85°, 128.92°

Earthquake Details

Magnitude
4.3 mb
Depth
269.2 km
intermediate depth
Location
-5.8493°N
128.9224°E

Technical Information

Event ID
us7000s7sf
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Stations Used
20
Azimuthal Gap
112.0°
Min Station Distance
4.413°
RMS Residual
0.52 sec
Last Updated
2026-04-07 21:54:00 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Ambon, Indonesia?

The magnitude 4.3 earthquake that struck 251 km SSE of Ambon, Indonesia on March 15, 2026 at 21:48 UTC had a depth of 269.2 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 4.3 earthquakes can continue for several days and gradually diminish over time.

What should I do after an earthquake?

If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.

Authoritative source: USGS event page (event ID: us7000s7sf). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, March 15, 2026). M4.3 Earthquake 251 km SSE of Ambon, IndonesiaMarch 15, 2026. Retrieved May 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000s7sf/