During the night and today (18. December 2022) the earthquake swarm around 47 km east of Fonti in Eastern Iceland continued. Largest earthquake at the writing of this article had magnitude of Mw3,3 but another and few smaller earthquakes, but with magnitude of Mw3,1 took place in the same location. Several earthquakes with magnitude above Mw2,5 also took place.
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Intra-plate earthquakes in north west Iceland
During the night of 12-August-2014 several intra-plate earthquake took place in north west Iceland. Largest earthquake in this swarm had the magnitude of 1,5. This earthquake activity did appear poorly on my geophone in Böðvarshólar. That is due to distance and small magnitude of the earthquakes, but my geophone at Böðvarshólar did detected this earthquake activity and from that I know that more earthquake activity took place than appears on Icelandic Meteorological Office maps.
The earthquakes in north west Iceland (yellow). This are intra-plate earthquakes. Copyright of this image belongs to Icelandic Meteorological Office.
This earthquake activity is not connected to any known fault zone or any known faults. That however does not mean they are not there. It is impossible to know if there is going to be more earthquake activity in this region. This is however second time this year a earthquake swarm takes place in this area, last one took place in week 28 (in Icelandic). That week the largest earthquake had the magnitude of 1,6.