Yesterday (18-October-2013) an earthquake swarm started on Tjörnes Fracture Zone. This earthquake swarm has not been big, with largest earthquake only having the magnitude 2,5. This earthquake swarm is taking place at the end of an unnamed volcano that is in this area. The earthquakes appear to be only tectonic at this moment.
The earthquake swarm in Tjörnes Fracture Zone yesterday and today. Copyright of this image belongs to Icelandic Meteorological Office.
It is hard to know for sure if earthquake activity is going to continue in this area of Tjörnes Fractures Zone. Currently the activity remains low to moderate in this area, but no large earthquakes (over magnitude 4,0) have so far taken place in this area.