Weekly overview, 22. - 28. May, Week 21

Approximately 630 earthquakes were located on the IMO seismic network last week. This is around double the amount of earthquakes detected last week and the week before, but similar to the number of events for the last four weeks before that. The largest event of the week was a magnitude 3.8 in the evening of May 23rd 10 km east of Grímsey. It was felt widely around the Eyjafjörður area, including in Akureyri and in Ólafsfjörður. This earthquake was a part of an earthquake swarm that was active this week. This swarm started late last week and was mostly confined to two clusters just east of Grímsey. Another event last week was a M3.1 just over a kilometer southeast of Kleifarvatn on May 27nd was reported felt in Hafnarfjörður. It was a part of a dense cluster of earthquakes and another clustered activity was also measured in Skipastígshraun, just west of Mt. Þorbjörn.