Today (18. April 2023) at 07:59 UTC an earthquake swarm started west of Grímsey island. The distance is around 36 km west of Grímsey island. Largest earthquake in this swarm had a magnitude of Mw4,2 and was felt in Siglufjörður and Akureyri towns.
At the writing of this article, this earthquake swarm is ongoing and there’s a risk of stronger earthquakes in this area. This area last had a major earthquake swarm in June 2020. With largest earthquake in that swarm having a magnitude of Mw5,8.