4.1

M4.1 Earthquake 107 km E of Bitung, IndonesiaApril 10, 2026

2026-04-10 17:22:20 UTC (2026-04-10) · approx. 1:22 AM UTC+8 local

MagnitudeM4.1(mb)
Time17:22 UTC1:22 AM UTC+8
Depth35.0 kmshallow crustal
Coordinates1.254°, 126.073°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 10, 2026 at 17:22 UTC, a magnitude 4.1 shallow crustal earthquake struck 107 km E of Bitung, Indonesia, at a depth of 35.0 km and coordinates 1.2542°, 126.0727°.

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.

This earthquake is part of an ongoing aftershock sequence following the magnitude 5.3 mainshock that occurred 24 days ago 126 km WNW of Ternate, Indonesia. Since the mainshock, the USGS has recorded 1 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.

Map showing earthquake epicenter at 1.25°, 126.07°

Earthquake Details

Magnitude
4.1 mb
Depth
35.0 km
shallow crustal
Location
1.2542°N
126.0727°E

Technical Information

Event ID
us6000srm3
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
28
Azimuthal Gap
94.0°
Min Station Distance
7.436°
RMS Residual
1.09 sec
Last Updated
2026-05-01 15:30:47 UTC

Common Questions

How strong was the magnitude 4.1 earthquake near Bitung, Indonesia?

The magnitude 4.1 earthquake that struck 107 km E of Bitung, Indonesia on April 10, 2026 at 17:22 UTC had a depth of 35.0 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 4.1 earthquakes can continue for several days and gradually diminish over time.

Is this the same earthquake as the M5.3 one earlier?

No. This magnitude 4.1 earthquake is an aftershock of the larger magnitude 5.3 mainshock that occurred earlier 126 km WNW of Ternate, Indonesia. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.

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: us6000srm3). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, April 10, 2026). M4.1 Earthquake 107 km E of Bitung, IndonesiaApril 10, 2026. Retrieved May 18, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000srm3/