M6.6 earthquake - Alamagan region, Northern Mariana Islands

What happened

A magnitude 6.6 earthquake struck Alamagan region, Northern Mariana Islands on 10 Feb 1921, 23:53 UTC at a depth of 15 km.

Earthquakes of this size are classed as Strong. Can cause damage in populated areas up to tens of kilometres away. This was a shallow earthquake, which tends to be felt more strongly at the surface.