M4.2 Earthquake 241 km S of Sinabang, Indonesia — May 28, 2021
2021-05-28 20:21:22 UTC (2021-05-28) · approx. 2:21 AM UTC+6 local
On May 28, 2021 at 20:21 UTC, a magnitude 4.2 shallow crustal earthquake struck 241 km S of Sinabang, Indonesia, at a depth of 14.9 km and coordinates 0.3314°, 96.7486°.
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.
Earthquake Details
96.7486°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Sinabang, Indonesia?
The magnitude 4.2 earthquake that struck 241 km S of Sinabang, Indonesia on May 28, 2021 at 20:21 UTC had a depth of 14.9 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.
Actions
Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000egzx). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, May 28, 2021). M4.2 Earthquake 241 km S of Sinabang, Indonesia — May 28, 2021. Retrieved August 7, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000egzx/