M4.5 Earthquake near Southwest Indian Ridge — August 19, 2025
2025-08-19 20:38:28 UTC (2025-08-19) · approx. 12:38 AM UTC+4 local
On August 19, 2025 at 20:38 UTC, a magnitude 4.5 shallow crustal earthquake struck near Southwest Indian Ridge, at a depth of 10.0 km and coordinates -35.4508°, 53.7630°. This earthquake was detected by 12 seismic stations with good location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
53.7630°E
Technical Information
Common Questions
How strong was the magnitude 4.5 earthquake near Southwest Indian Ridge?
The magnitude 4.5 earthquake that struck near Southwest Indian Ridge on August 19, 2025 at 20:38 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 -35.4508°, 53.7630°, which is near Southwest Indian Ridge.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Authoritative source: USGS event page (event ID: us7000qvqg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 19, 2025). M4.5 Earthquake near Southwest Indian Ridge — August 19, 2025. Retrieved November 4, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qvqg/