Earthquake in Þórðarhyrna volcano

Today (29. June 2023) at 07:48 UTC an earthquake with magnitude of Mw3,1 took place in Þórðarhyrna volcano. This was just one earthquake and a minor Mw1,3 earthquake happened at 08:17 UTC and since then its been quiet. Þórðarhyrna volcano is inside Grímsfjall volcano fissure swarm but is an independent volcano in this setting. Sometimes Þórðarhyrna and Grímsfjall erupt at the same time.

Green star in south part of Þórðarhyrna volcano. Not many other earthquakes on the map. Time on map is 29. June, 23, time 13:20 Icelandic time.
Green star in Þórðarhyrna volcano. Copyright of this image belongs to Icelandic Met Office.

Last eruption in Þórðarhyrna volcano took place around late 1890 or early 1900. I am not sure what year exactly, because eruption often attributed to Þórðarhyrna volcano took place in Grímsfjall volcano and sometimes the reverse happened. Last eruption took place around 120 to 140-ish years ago.