A single earthquake took place in Bárðarbunga volcano at 01:20 UTC. This earthquake had a magnitude of Mw3,5 and no other earthquakes took place following this earthquake. This type of earthquake has been followed by stronger earthquake activity later but this is not always the case. This earthquake activity is due to inflation of Bárðarbunga volcano after the eruption in Holuhraun in August 2014 to February 2015. This earthquake was in its normal place in north-east part of Bárðarbunga volcano.
The green star shows the Mw3,5 earthquake in Bárðarbunga volcano. Copyright of this image belongs to Icelandic Met Office.
This activity is normal and does not signal any eruption risk because after the eruption of 2014 and 2015 it is going to be a while until next eruption happens in Bárðarbunga volcano, probably.