M4.6 Earthquake near Southwest Indian Ridge — April 29, 2026

2026-04-29 20:38:48 UTC (2 hours ago) · approx. 12:38 AM UTC+4 local

MagnitudeM4.6(mb)

Time20:38 UTC≈ 12:38 AM UTC+4

Depth10.0 kmshallow crustal

Coordinates-27.712°, 64.034°

Felt byNo felt reports

Status✓ Reviewed by USGS

On April 29, 2026 at 20:38 UTC, a magnitude 4.6 shallow crustal earthquake struck near Southwest Indian Ridge, at a depth of 10.0 km and coordinates -27.7124°, 64.0345°. This earthquake was detected by 44 seismic stations with excellent 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.

Map showing earthquake epicenter at -27.71°, 64.03°

Earthquake Details

Magnitude

4.6 mb

Depth

10.0 km

shallow crustal

Location

-27.7124°N
64.0345°E

Technical Information

Event ID

us7000sh4s

Event Type

earthquake

Status

✓ Reviewed

Significance

326

Stations Used

Azimuthal Gap

78.0°

Min Station Distance

7.944°

RMS Residual

0.54 sec

Last Updated

2026-04-29 21:07:15 UTC

Common Questions

How strong was the magnitude 4.6 earthquake near Southwest Indian Ridge?

The magnitude 4.6 earthquake that struck near Southwest Indian Ridge on April 29, 2026 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 -27.7124°, 64.0345°, which is near Southwest Indian Ridge.

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.

What should I do after an earthquake?

If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.

Authoritative source: USGS event page (event ID: us7000sh4s). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, April 29, 2026). M4.6 Earthquake near Southwest Indian Ridge — April 29, 2026. Retrieved April 29, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000sh4s/