M4.6 Earthquake 170 km SSE of Port Blair, India — October 12, 2026
2026-10-12 15:37:21 UTC (2026-10-12) · approx. 9:37 PM UTC+6 local
On October 12, 2026 at 15:37 UTC, a magnitude 4.6 intermediate depth earthquake struck 170 km SSE of Port Blair, India, at a depth of 91.3 km and coordinates 10.1601°, 93.0837°. This earthquake was detected by 24 seismic stations with good 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
93.0837°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Port Blair, India?
The magnitude 4.6 earthquake that struck 170 km SSE of Port Blair, India on October 12, 2026 at 15:37 UTC had a depth of 91.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 10.1601°, 93.0837°, which is 170 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.
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Location
Authoritative source: USGS event page (event ID: us6000u1sk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, October 12, 2026). M4.6 Earthquake 170 km SSE of Port Blair, India — October 12, 2026. Retrieved October 15, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000u1sk/