Today (27-August-2014) at 01:52 UTC a magnitude 4,5 earthquake took place in Askja volcano. This is the largest earthquake in Askja volcano since 1992 according to news in Iceland. There are currently some minor earthquake taking place in Askja volcano at this moment, but they are far smaller then this event.
This earthquake activity in Askja volcano appears to be taking place due to stress changes in the area. This stress changes happen due the dyke activity from Bárðarbunga volcano in the past week. I am expecting more earthquakes in this area in the next days to months due to this. Some of those earthquakes are going to be outside of volcanic areas and might have magnitude above 5,0. This earthquake did appear on my geophone and can be viewed here.