M5.3 Earthquake in the Nicobar Islands, India region — August 3, 2021
2021-08-03 01:51:14 UTC (2021-08-03) · approx. 7:51 AM UTC+6 local
On August 3, 2021 at 01:51 UTC, a magnitude 5.3 shallow crustal earthquake struck in the Nicobar Islands, India region, at a depth of 10.0 km and coordinates 9.0127°, 94.1198°.
Physical scale: An earthquake of magnitude 5.3 releases seismic energy equivalent to roughly 1 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.7 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
94.1198°E
Technical Information
Common Questions
How strong was the magnitude 5.3 earthquake in the Nicobar Islands, India region?
The magnitude 5.3 earthquake that struck in the Nicobar Islands, India region on August 3, 2021 at 01:51 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 9.0127°, 94.1198°, which is in the Nicobar Islands, India region.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.3 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Location
Authoritative source: USGS event page (event ID: us6000f1qs). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, August 3, 2021). M5.3 Earthquake in the Nicobar Islands, India region — August 3, 2021. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000f1qs/