4.2

M4.2 Earthquake 241 km SSE of Waingapu, Indonesia — August 5, 2020

2020-08-05 21:49:46 UTC (2020-08-05) · approx. 5:49 AM UTC+8 local

MagnitudeM4.2(mb)
Time21:49 UTC≈ 5:49 AM UTC+8
Depth9.7 kmshallow crustal
Coordinates-11.558°, 121.350°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 5, 2020 at 21:49 UTC, a magnitude 4.2 shallow crustal earthquake struck 241 km SSE of Waingapu, Indonesia, at a depth of 9.7 km and coordinates -11.5582°, 121.3501°.

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 -11.56°, 121.35°

Earthquake Details

Magnitude
4.2 mb
Depth
9.7 km
shallow crustal
Location
-11.5582°N
121.3501°E

Technical Information

Event ID
us6000bcpt
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Azimuthal Gap
88.0°
Min Station Distance
2.639°
RMS Residual
0.48 sec
Last Updated
2020-10-21 22:04:10 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Waingapu, Indonesia?

The magnitude 4.2 earthquake that struck 241 km SSE of Waingapu, Indonesia on August 5, 2020 at 21:49 UTC had a depth of 9.7 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 4.2 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: us6000bcpt). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, August 5, 2020). M4.2 Earthquake 241 km SSE of Waingapu, Indonesia — August 5, 2020. Retrieved October 21, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000bcpt/