M4.3 Earthquake 117 km ESE of Port Blair, India — August 28, 2023
2023-08-28 22:20:12 UTC (2023-08-28) · approx. 4:20 AM UTC+6 local
On August 28, 2023 at 22:20 UTC, a magnitude 4.3 intermediate depth earthquake struck 117 km ESE of Port Blair, India, at a depth of 125.2 km and coordinates 11.1246°, 93.6704°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
93.6704°E
Technical Information
Common Questions
How strong was the magnitude 4.3 earthquake near Port Blair, India?
The magnitude 4.3 earthquake that struck 117 km ESE of Port Blair, India on August 28, 2023 at 22:20 UTC had a depth of 125.2 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000ksnc). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 28, 2023). M4.3 Earthquake 117 km ESE of Port Blair, India — August 28, 2023. Retrieved November 4, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000ksnc/