4.2

M4.2 Earthquake 232 km ESE of Attu Station, AlaskaApril 25, 2026

2026-04-25 04:16:05 UTC (2 hours ago)

On April 25, 2026 at 04:16 UTC, a magnitude 4.2 shallow crustal earthquake struck 232 km ESE of Attu Station, Alaska, at a depth of 10.0 km and coordinates 52.0312°, 176.3284°.

Map showing earthquake epicenter at 52.03°, 176.33°

Earthquake Details

Magnitude
4.2 mb
Depth
10.0 km
shallow crustal
Location
52.0312°N
176.3284°E
Intensity (MMI)
2.6
weak

Technical Information

Event ID
us6000ssrc
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
42
Azimuthal Gap
189.0°
Min Station Distance
1.388°
RMS Residual
0.84 sec
Last Updated
2026-04-25 04:34:37 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Attu Station, Alaska?

The magnitude 4.2 earthquake that struck 232 km ESE of Attu Station, Alaska on April 25, 2026 at 04:16 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 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.