Today (20-July-2018) at 06:28 UTC a magnitude 3,4 earthquake was in Bárðarbunga volcano south-east part of the caldera. It was followed by several smaller earthquakes during the day. Earthquake activity is common in Bárðarbunga volcano at the moment, but rate of earthquakes happening continues to drop every 3 – 6 months. When earthquakes happen they are often larger in magnitude.
Earthquake activity in Bárðarbunga volcano, the green star is the magnitude 3,4 earthquake. Copyright of this image belongs to Icelandic Met Office.
There is a risk of larger earthquake in next few hours to 48 hours. If nothing happens after 48 hours there is unlikely going to be a another larger earthquake happening. The magnitude that can be expected is above 4,0.
All around the world the volcanos are restless, but in iceland its to calm. Katla is calm. No big eqs since the last 4. Something.Barda are recovering its last eruption. Øræfajøkul is the new up and coming prime suspect for a eruption.
Seems to have been an eq swarm under Herdubreid and between Askja and Herdubreid? Intrusion or tectonic?