Yesterday (24-June 2026) an earthquake with magnitude of Mw3,3 took place just south of Presthnúar volcano. This earthquake was part of an ongoing earthquake swarm in this area.
Based on earthquake data. I believe this earthquake activity is because of magma movement in the crust. I don’t think this is going to result in a eruption in this area. At the moment, the earthquake activity is too small for that too happen. This type of earthquake activity can go on for months and sometimes years before it stops.