M5.1 Earthquake 45 km E of Port Blair, India — October 20, 2022
2022-10-20 06:46:55 UTC (2022-10-20) · approx. 12:46 PM UTC+6 local
Felt by 9 people across nearby locations.
On October 20, 2022 at 06:46 UTC, a magnitude 5.1 intermediate depth earthquake struck 45 km E of Port Blair, India, at a depth of 90.1 km and coordinates 11.5884°, 93.1518°. This earthquake was detected by 101 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 403, placing it among routine seismic activity.
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.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 9 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
93.1518°E
Technical Information
Common Questions
How strong was the magnitude 5.1 earthquake near Port Blair, India?
The magnitude 5.1 earthquake that struck 45 km E of Port Blair, India on October 20, 2022 at 06:46 UTC had a depth of 90.1 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 11.5884°, 93.1518°, which is 45 km E of Port Blair, India.
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.
Actions
Location
Authoritative source: USGS event page (event ID: us6000iv38). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, October 20, 2022). M5.1 Earthquake 45 km E of Port Blair, India — October 20, 2022. Retrieved December 31, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000iv38/