M4.6 Earthquake 293 km SSE of Port Blair, India — October 7, 2023
2023-10-07 21:49:41 UTC (2023-10-07) · approx. 3:49 AM UTC+6 local
On October 7, 2023 at 21:49 UTC, a magnitude 4.6 shallow crustal earthquake struck 293 km SSE of Port Blair, India, at a depth of 10.0 km and coordinates 9.2548°, 93.8582°. This earthquake was detected by 54 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
93.8582°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Port Blair, India?
The magnitude 4.6 earthquake that struck 293 km SSE of Port Blair, India on October 7, 2023 at 21:49 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 9.2548°, 93.8582°, which is 293 km SSE of Port Blair, India.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Authoritative source: USGS event page (event ID: us6000ldwk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 7, 2023). M4.6 Earthquake 293 km SSE of Port Blair, India — October 7, 2023. Retrieved December 14, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000ldwk/