4.2

M4.2 Earthquake 177 km ENE of Laikit, Laikit II (Dimembe), Indonesia — December 9, 2020

2020-12-09 20:29:04 UTC (2020-12-09) · approx. 4:29 AM UTC+8 local

MagnitudeM4.2(mb)
Time20:29 UTC≈ 4:29 AM UTC+8
Depth6.5 kmshallow crustal
Coordinates2.330°, 126.335°
Felt byNo felt reports
Status✓ Reviewed by USGS

On December 9, 2020 at 20:29 UTC, a magnitude 4.2 shallow crustal earthquake struck 177 km ENE of Laikit, Laikit II (Dimembe), Indonesia, at a depth of 6.5 km and coordinates 2.3298°, 126.3355°.

Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 2.33°, 126.34°

Earthquake Details

Magnitude
4.2 mb
Depth
6.5 km
shallow crustal
Location
2.3298°N
126.3355°E

Technical Information

Event ID
us7000cr09
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Azimuthal Gap
121.0°
Min Station Distance
1.859°
RMS Residual
0.83 sec
Last Updated
2021-02-20 16:11:58 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Laikit, Laikit II (Dimembe), Indonesia?

The magnitude 4.2 earthquake that struck 177 km ENE of Laikit, Laikit II (Dimembe), Indonesia on December 9, 2020 at 20:29 UTC had a depth of 6.5 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 4.2 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.2 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000cr09). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, December 9, 2020). M4.2 Earthquake 177 km ENE of Laikit, Laikit II (Dimembe), Indonesia — December 9, 2020. Retrieved February 20, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000cr09/