Today (4-Oktober-2019) at 16:31 UTC a magnitude Mw3,8 earthquake took place in Bárðarbunga volcano. This is the second earthquake in Bárðarbunga volcano in less than 24 hours. Like the earlier earthquake there has been no aftershock activity following this earthquake.
There has been minor earthquake activity in other parts of Bárðarbunga volcano. I don’t know if that activity is connected to the stronger earthquake activity.