M4.0 earthquake - 190 km WSW of Attu Station, Alaska

What happened

A magnitude 4 earthquake struck 190 km WSW of Attu Station, Alaska on 23 Sept 2017, 23:35 UTC at a depth of 10 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.