4.9

M4.9 Earthquake 121 km NE of Lospalos, Timor LesteDecember 28, 2021

2021-12-28 10:51:48 UTC (2021-12-28) · approx. 7:51 PM UTC+9 local

MagnitudeM4.9(mb)
Time10:51 UTC7:51 PM UTC+9
Depth159.8 kmintermediate depth
Coordinates-7.628°, 127.643°
Felt byNo felt reports
Status✓ Reviewed by USGS

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.

Map showing earthquake epicenter at -7.63°, 127.64°

Earthquake Details

Magnitude
4.9 mb
Depth
159.8 km
intermediate depth
Location
-7.6280°N
127.6428°E

Technical Information

Event ID
us6000gfuc
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Azimuthal Gap
29.0°
Min Station Distance
3.639°
RMS Residual
0.64 sec
Last Updated
2022-03-05 23:10:47 UTC

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.

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 LesteDecember 28, 2021. Retrieved March 5, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000gfuc/