4.1

M4.1 Earthquake 104 km NW of Ternate, Indonesia — May 25, 2021

2021-05-25 19:45:13 UTC (2021-05-25) · approx. 3:45 AM UTC+8 local

MagnitudeM4.1(mb)
Time19:45 UTC≈ 3:45 AM UTC+8
Depth75.8 kmintermediate depth
Coordinates1.571°, 126.858°
Felt byNo felt reports
Status✓ Reviewed by USGS

On May 25, 2021 at 19:45 UTC, a magnitude 4.1 intermediate depth earthquake struck 104 km NW of Ternate, Indonesia, at a depth of 75.8 km and coordinates 1.5710°, 126.8584°.

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.

Map showing earthquake epicenter at 1.57°, 126.86°

Earthquake Details

Magnitude
4.1 mb
Depth
75.8 km
intermediate depth
Location
1.5710°N
126.8584°E

Technical Information

Event ID
us6000efkq
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Azimuthal Gap
162.0°
Min Station Distance
0.942°
RMS Residual
0.40 sec
Last Updated
2021-07-31 22:09:44 UTC

Common Questions

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

The magnitude 4.1 earthquake that struck 104 km NW of Ternate, Indonesia on May 25, 2021 at 19:45 UTC had a depth of 75.8 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 4.1 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.1 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000efkq). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, May 25, 2021). M4.1 Earthquake 104 km NW of Ternate, Indonesia — May 25, 2021. Retrieved July 31, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000efkq/