4.2

M4.2 Earthquake 180 km NE of Lospalos, Timor Leste — July 31, 2020

2020-07-31 20:20:19 UTC (2020-07-31) · approx. 5:20 AM UTC+9 local

MagnitudeM4.2(mb)
Time20:20 UTC≈ 5:20 AM UTC+9
Depth153.1 kmintermediate depth
Coordinates-7.482°, 128.258°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 31, 2020 at 20:20 UTC, a magnitude 4.2 intermediate depth earthquake struck 180 km NE of Lospalos, Timor Leste, at a depth of 153.1 km and coordinates -7.4821°, 128.2579°.

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 -7.48°, 128.26°

Earthquake Details

Magnitude
4.2 mb
Depth
153.1 km
intermediate depth
Location
-7.4821°N
128.2579°E

Technical Information

Event ID
us6000b7nq
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Azimuthal Gap
58.0°
Min Station Distance
3.054°
RMS Residual
0.88 sec
Last Updated
2020-10-10 17:11:06 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Lospalos, Timor Leste?

The magnitude 4.2 earthquake that struck 180 km NE of Lospalos, Timor Leste on July 31, 2020 at 20:20 UTC had a depth of 153.1 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: us6000b7nq). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, July 31, 2020). M4.2 Earthquake 180 km NE of Lospalos, Timor Leste — July 31, 2020. Retrieved October 10, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000b7nq/