Posted on by Jón Frímann

Small dyke intrusion into Sundhnúkagígar in Svartsengi volcano during the night (4-November 2024)

During the night of 4th November 2024 at 02:30 to around 03:00 UTC an small dyke intrusion took place in Sundhnúkagígar crater in Svartsengi volcano. Around 20 to 25 earthquakes took place in this minor dyke intrusion that stopped as quickly as it had started.

Dots of small earthquakes all over Reykjanes peninsula. The dots in Svartsengi volcano, in Sundhnúkagígar crater row. This group of small earthquakes is the dyke intrusion that was trying to happen during the night.
Earthquakes in Svartsengi volcano, Sundhnúkagígar crater row. Copyright of this image belongs to Icelandic Met Office.

There is a ongoing risk of more sudden dyke intrusion like this. Those can go on for hours and might not even erupt at all. A lot more earthquake activity is going to happen if such a dyke intrusion happens.