M4.0 earthquake - 41 km S of Attu Station, Alaska

What happened

A magnitude 4 earthquake struck 41 km S of Attu Station, Alaska on 20 Feb 2018, 12:52 UTC at a depth of 21 km.

Earthquakes of this size are classed as Light. Widely felt nearby; objects may shake or fall. Significant damage is unusual. This was a shallow earthquake, which tends to be felt more strongly at the surface.