Earthquake swarm in Krýsuvík volcano

Yesterday (18-June 2025) a small earthquake swarm started in Krýsuvík volcano. The largest earthquake had a magnitude of Mw3,4 and was felt in Reykjavík and nearby area.

Green star just west of Kleifarvatn lake in Krýsuvík volcano. A lot of dots show smaller earthquakes in this area.
The earthquake swarm in Krýsuvík volcano. Copyright of this image belongs to Icelandic Met Office.

This earthquake swarm is possibly because of the inflation in Svartsengi volcano. More earthquake activity might happen in this area because of that inflation in next few weeks.

Strongest earthquake in Ljósufjöll volcano system so far

Yesterday (16-June 2025) at 18:05 UTC an earthquake with magnitude of Mw3,7 took place in Ljósufjöll volcano system at the depth of 18 km. It was felt in nearby area that does not have any dense population.

Green star showing the earthquake in the mountain area of Ljósufjöll volcano system in western part of Iceland. Just north of Borgarnes town.
The earthquake activity in Ljósufjöll volcano system. Copyright of this image belongs to Icelandic Met Office.

This earthquake activity continues to happen because of magma inflow into the crust at this location. Since the inflow of magma started at this location, the magma has not moved up into the crust that can be noticed. Resulting in pressure building up at the lower end of the crust in this part of Iceland. The crust in this area is not giving into the pressure from the magma easily and this crust is also old, dense and brittle. Making it much more difficult for any magma to move to the surface.

Deep earthquake activity continues in Eyjafjallajökull volcano

Deep earthquake activity continues in Eyjafjallajökull volcano. In recent weeks however the earthquake activity has been getting shallower. Going from 29 km depth and up to 24 km depth.

Orange and red dots showing the smaller earthquakes in Eyjafjallajökull volcano. That is located west of Mýrdalsjökull glacier.
Earthquake activity in Eyjafjallajökull volcano. Copyright of this image belongs to Icelandic Met Office.

This activity is far away from any eruption happening again in Eyjafjallajökull volcano. This however is an interesting development. Since this is happening only 15 years after the eruption in Eyjafjallajökull volcano.