Svartsengi volcano update: Eruption subsides but earthquakes continue, magma seems migrating northeast

Today's quakes near the eruption site (oldest in green, latest in red)

Today’s quakes near the eruption site (oldest in green, latest in red)

The eruption north of Grindavík has decreased a lot or even paused,with little activity visible on webcams and recent drone flights.

However, seismic activity continues. Seismic activity has subsided in the southern part of the magma tunnel, near Grindavík, but activity at the northern end of the magma tunnel continues at a similar intensity and has moved even further north in recent hours. This includes a magnitude 5 quake 6 km east of Vogar at 16.54 local time, which was felt widely in the area.
The seismic activity is now almost 9 km north of the northernmost fissure in this eruption sequence that formed in August 2024. The largest earthquakes have been about magnitude 3 and are clearly felt in Vogar, which is about 7 km NW of the activity.

Deformation measurements show that magma is still flowing from Svartsengi into the magma tunnel on the Sundhnúksgígar series. The seismic activity indicates that the magma is moving northeast. The seismic activity is at a depth of about 4-6 km and work is underway to analyze deformation data in that area. While seismic activity is still considerable and deformation is still being measured, the possibility of magma re-emerging at the Sundhnúk crater series or near the area of ​​greatest seismic activity must be considered.

Source: Icelandic Met Office (IMO)

Map of the lava from today’s eruption (image: IMO)