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.
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.