M4.9 Earthquake 223 km SSE of Port Blair, India — November 7, 2021
2021-11-07 23:58:24 UTC (2021-11-07) · approx. 5:58 AM UTC+6 local
On November 7, 2021 at 23:58 UTC, a magnitude 4.9 shallow crustal earthquake struck 223 km SSE of Port Blair, India, at a depth of 10.0 km and coordinates 9.8651°, 93.6735°.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
93.6735°E
Technical Information
Common Questions
How strong was the magnitude 4.9 earthquake near Port Blair, India?
The magnitude 4.9 earthquake that struck 223 km SSE of Port Blair, India on November 7, 2021 at 23:58 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 9.8651°, 93.6735°, which is 223 km SSE of Port Blair, India.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
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Location
Authoritative source: USGS event page (event ID: us7000fsah). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 7, 2021). M4.9 Earthquake 223 km SSE of Port Blair, India — November 7, 2021. Retrieved January 15, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000fsah/