5.4

M5.4 Earthquake near northern Mid-Atlantic RidgeApril 17, 2026

2026-04-17 12:39:26 UTC (2 days ago)

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green Alertno significant casualties or damage expected

On April 17, 2026 at 12:39 UTC, a magnitude 5.4 shallow crustal earthquake struck near northern Mid-Atlantic Ridge, at a depth of 10.0 km and coordinates 13.1896°, -44.8124°. The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 67 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 449, placing it among routine seismic activity.

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Map showing earthquake epicenter at 13.19°, -44.81°

Earthquake Details

Magnitude
5.4 mww
Depth
10.0 km
shallow crustal
Location
13.1896°N
-44.8124°E
Intensity (MMI)
0.0
weak

Technical Information

Event ID
us6000sqta
Event Type
earthquake
Status
✓ Reviewed
Significance
449
Stations Used
67
Azimuthal Gap
87.0°
Min Station Distance
11.142°
RMS Residual
0.82 sec
Last Updated
2026-04-18 13:03:41 UTC

Common Questions

How strong was the magnitude 5.4 earthquake near northern Mid-Atlantic Ridge?

The magnitude 5.4 earthquake that struck near northern Mid-Atlantic Ridge on April 17, 2026 at 12:39 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 13.1896°, -44.8124°, which is near northern Mid-Atlantic Ridge.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.4 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.