M4.9 Earthquake 121 km NE of Lospalos, Timor Leste — December 28, 2021
2021-12-28 10:51:48 UTC (2021-12-28) · approx. 7:51 PM UTC+9 local
On December 28, 2021 at 10:51 UTC, a magnitude 4.9 intermediate depth earthquake struck 121 km NE of Lospalos, Timor Leste, at a depth of 159.8 km and coordinates -7.6280°, 127.6428°.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.

Earthquake Details
127.6428°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Lospalos, Timor Leste?
The magnitude 4.9 earthquake that struck 121 km NE of Lospalos, Timor Leste on December 28, 2021 at 10:51 UTC had a depth of 159.8 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -7.6280°, 127.6428°, which is 121 km NE of Lospalos, Timor Leste.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us6000gfuc). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, December 28, 2021). M4.9 Earthquake 121 km NE of Lospalos, Timor Leste — December 28, 2021. Retrieved March 5, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000gfuc/