4.7

M4.7 Earthquake southeast of the Loyalty IslandsApril 21, 2026

2026-04-21 11:03:15 UTC (4 hours ago)

On April 21, 2026 at 11:03 UTC, a magnitude 4.7 shallow crustal earthquake struck southeast of the Loyalty Islands, at a depth of 10.0 km and coordinates -23.1597°, 170.8816°. This earthquake was detected by 28 seismic stations with good location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.

Map showing earthquake epicenter at -23.16°, 170.88°

Earthquake Details

Magnitude
4.7 mb
Depth
10.0 km
shallow crustal
Location
-23.1597°N
170.8816°E

Technical Information

Event ID
us6000srtg
Event Type
earthquake
Status
✓ Reviewed
Significance
340
Stations Used
28
Azimuthal Gap
117.0°
Min Station Distance
3.214°
RMS Residual
0.51 sec
Last Updated
2026-04-21 11:38:27 UTC

Common Questions

How strong was the magnitude 4.7 earthquake southeast of the Loyalty Islands?

The magnitude 4.7 earthquake that struck southeast of the Loyalty Islands on April 21, 2026 at 11:03 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 -23.1597°, 170.8816°, which is southeast of the Loyalty Islands.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 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.