Fresh earthquake activity in Katla volcano

Today at 12:19 UTC an earthquake swarm started in Katla volcano. This has been mostly normal earthquake activity for Katla volcano, with earthquakes that are small in magnitude and most not reaching magnitude 2,0. Largest earthquake took place at 15:57 UTC and was a magnitude 3,0 and at magnitude 16:12 UTC and had the magnitude of 3,3.

The earthquake activity in Katla volcano. Copyright of this image belongs to Icelandic Met Office.

It is difficult to know if this earthquake activity was due to change in hydrothermal systems that exist in this area or due to magma or gas pressure changes. No harmonic tremor changes have taken place following this earthquake activity. Since the largest earthquakes happened the activity has quieted down considerably. This earthquake activity or a new one might start without warning in Katla volcano.