5.1

M5.1 Earthquake in the Nicobar Islands, India region — August 6, 2021

2021-08-06 08:19:04 UTC (2021-08-06) · approx. 2:19 PM UTC+6 local

MagnitudeM5.1(mb)
Time08:19 UTC≈ 2:19 PM UTC+6
Depth10.0 kmshallow crustal
Coordinates8.764°, 93.956°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 6, 2021 at 08:19 UTC, a magnitude 5.1 shallow crustal earthquake struck in the Nicobar Islands, India region, at a depth of 10.0 km and coordinates 8.7641°, 93.9557°.

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.

Map showing earthquake epicenter at 8.76°, 93.96°

Earthquake Details

Magnitude
5.1 mb
Depth
10.0 km
shallow crustal
Location
8.7641°N
93.9557°E

Technical Information

Event ID
us6000f2p9
Event Type
earthquake
Status
✓ Reviewed
Significance
400
Azimuthal Gap
48.0°
Min Station Distance
4.599°
RMS Residual
0.80 sec
Last Updated
2021-10-23 15:45:43 UTC

Common Questions

How strong was the magnitude 5.1 earthquake in the Nicobar Islands, India region?

The magnitude 5.1 earthquake that struck in the Nicobar Islands, India region on August 6, 2021 at 08:19 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 8.7641°, 93.9557°, which is in the Nicobar Islands, India 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.

Authoritative source: USGS event page (event ID: us6000f2p9). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, August 6, 2021). M5.1 Earthquake in the Nicobar Islands, India region — August 6, 2021. Retrieved October 23, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000f2p9/