Magma on its way up the crust in Fagradalsfjall mountain, last measurements shows 1600 meters left (1,6km)

According to a news on Ví (linked below) the magma has started to rise in Fagradalsfjall mountain. At the time of the measurement from a satellite the magma had around 1600 meters (1,6km) left until it reached the surface. At the speed the magma was travelling, around 130 meters a day an eruption was expected to happen around 11-January-2022. This is the current estimate, but that might change of the magma increases or slows down the speed it is going up in the crust.

It is unclear what area is going to erupt since the new dyke is more alongside the older eruption dyke. There is more chance than less that new craters are going to open up and start erupting, some of the area is under fresh lava from earlier eruption. Making the area look interesting when this eruption starts.

Icelandic News

Kvikan á uppleið en á enn 1.600 metra eftir (Ví

Felt earthquake on South Icelandic Seismic zone

During the night of 30-December-2021 at 04:16 UTC an earthquake with magnitude of Mw3,0 was felt in Selfoss town and Hveragerði town. This earthquake was part of a swarm in the area that is ongoing at the writing of this article.

Green star on the far right on the map with few red dots, showing the earthquake activity in SISZ
Earthquake activity in SISZ. Copyright of this image belongs to Icelandic Met Office.

There are no volcanoes in this area so this is only a tectonic activity. It is not possible to know when this earthquake swarm ends. This might be a aftershock activity after the Mw6,3 earthquake in SISZ that took place in this location in the year 2008. I expect this earthquake swarm to continue to few more days to weeks and then just end quietly.