5.5

M5.5 Earthquake near Mid-Indian RidgeApril 4, 2026

2026-04-04 04:55:32 UTC (2026-04-04)

0

green Alertno significant casualties or damage expected

On April 4, 2026 at 04:55 UTC, a magnitude 5.5 shallow crustal earthquake struck near Mid-Indian Ridge, at a depth of 10.0 km and coordinates -21.8079°, 68.8773°. The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 77 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 465, placing it among routine seismic activity.

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Map showing earthquake epicenter at -21.81°, 68.88°

Earthquake Details

Magnitude
5.5 mb
Depth
10.0 km
shallow crustal
Location
-21.8079°N
68.8773°E
Intensity (MMI)
0.0
weak

Technical Information

Event ID
us6000smhl
Event Type
earthquake
Status
✓ Reviewed
Significance
465
Stations Used
77
Azimuthal Gap
40.0°
Min Station Distance
5.542°
RMS Residual
0.92 sec
Last Updated
2026-04-17 01:11:43 UTC

Nearby Earthquakes (Last 7 Days)

Common Questions

How strong was the magnitude 5.5 earthquake near Mid-Indian Ridge?

The magnitude 5.5 earthquake that struck near Mid-Indian Ridge on April 4, 2026 at 04:55 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.

Where did the earthquake occur?

The earthquake epicenter was located at -21.8079°, 68.8773°, which is near Mid-Indian Ridge.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.5 earthquakes can continue for days to weeks 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.