4.0

M4.0 Earthquake 152 km NW of Tobelo, IndonesiaOctober 11, 2023

2023-10-11 20:48:27 UTC (2023-10-11) · approx. 4:48 AM UTC+8 local

MagnitudeM4.0(mb)
Time20:48 UTC4:48 AM UTC+8
Depth74.7 kmintermediate depth
Coordinates2.717°, 127.055°
Felt byNo felt reports
Status✓ Reviewed by USGS

On October 11, 2023 at 20:48 UTC, a magnitude 4.0 intermediate depth earthquake struck 152 km NW of Tobelo, Indonesia, at a depth of 74.7 km and coordinates 2.7171°, 127.0552°.

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.

Map showing earthquake epicenter at 2.72°, 127.06°

Earthquake Details

Magnitude
4.0 mb
Depth
74.7 km
intermediate depth
Location
2.7171°N
127.0552°E

Technical Information

Event ID
us6000lg5t
Event Type
earthquake
Status
✓ Reviewed
Significance
246
Stations Used
31
Azimuthal Gap
128.0°
Min Station Distance
1.957°
RMS Residual
0.66 sec
Last Updated
2023-12-16 22:13:09 UTC

Common Questions

How strong was the magnitude 4.0 earthquake near Tobelo, Indonesia?

The magnitude 4.0 earthquake that struck 152 km NW of Tobelo, Indonesia on October 11, 2023 at 20:48 UTC had a depth of 74.7 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.

Understanding This Data

Magnitude 4.0 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000lg5t). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, October 11, 2023). M4.0 Earthquake 152 km NW of Tobelo, IndonesiaOctober 11, 2023. Retrieved December 16, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lg5t/