M4.9 Earthquake in the Chagos Archipelago region — July 15, 2022
2022-07-15 07:55:40 UTC (2022-07-15) · approx. 12:55 PM UTC+5 local
Felt by 1 person across nearby locations.
On July 15, 2022 at 07:55 UTC, a magnitude 4.9 shallow crustal earthquake struck in the Chagos Archipelago region, at a depth of 10.0 km and coordinates -6.7711°, 71.7920°. This earthquake was detected by 52 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 370, placing it among routine seismic activity.
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.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 1 citizen response 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
71.7920°E
Technical Information
Common Questions
How strong was the magnitude 4.9 earthquake in the Chagos Archipelago region?
The magnitude 4.9 earthquake that struck in the Chagos Archipelago region on July 15, 2022 at 07:55 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 -6.7711°, 71.7920°, which is in the Chagos Archipelago region.
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.
Actions
Authoritative source: USGS event page (event ID: us6000i2lu). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, July 15, 2022). M4.9 Earthquake in the Chagos Archipelago region — July 15, 2022. Retrieved September 24, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000i2lu/