I am sorry how late I am with this article. I was busy yesterday (13. April 2024) and I was unable to write this article at that time.
Yesterday (13. April 2024) at 10:02 UTC an earthquake with a magnitude of Mw3,3 took place just south of Kleifarvatn lake in Krýsuvík volcano. This earthquake swarm seems to have happened on a fault that is mostly known for earthquakes that are connected to tectonic movements in the area. This is not a fault that is connected to volcano related activity, as those are more in south-west and north-east direction. Faults that are connected to crust movement in this area have the direction north-south as seems to be the case this time. It complicates matter that magma movement deep in the crust can result in earthquakes happening on both type of faults. As I suspect what happened here.
Krýsuvík volcano is not ready to start an eruption, best I can see. It is also missing a lot more earthquake activity before an eruption starts. But the signs that it is moving in that direction have started to appear. How long the wait is going to be when a eruption starts is impossible to know.