M5.1 Earthquake in the Chagos Archipelago region — June 13, 2021
2021-06-13 09:27:59 UTC (2021-06-13) · approx. 2:27 PM UTC+5 local
On June 13, 2021 at 09:27 UTC, a magnitude 5.1 shallow crustal earthquake struck in the Chagos Archipelago region, at a depth of 10.0 km and coordinates -4.9159°, 68.5238°.
Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
68.5238°E
Technical Information
Common Questions
How strong was the magnitude 5.1 earthquake in the Chagos Archipelago region?
The magnitude 5.1 earthquake that struck in the Chagos Archipelago region on June 13, 2021 at 09:27 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 -4.9159°, 68.5238°, which is in the Chagos Archipelago region.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.1 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000ecnj). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, June 13, 2021). M5.1 Earthquake in the Chagos Archipelago region — June 13, 2021. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000ecnj/