This is a update on the earthquake activity in Öræfajökull volcano on 26-June-2018.
Reviewed earthquake magnitude of the largest earthquake that happened at 16:57 UTC in Öræfajökull volcano has placed the magnitude at Mw3,1. Other earthquakes were smaller in magnitude, but strongest earthquake after the main earthquake had a magnitude of 2,1 (at 16:59 UTC).
Earthquake activity in Öræfajökull volcano (green star). Copyright of this image belongs to Icelandic Met Office.
Earthquake activity seems to have quieted down around 20:15 UTC. It might resume without much warning later tonight, tomorrow or days from now. It is not possible to know when the earthquake activity is going to resume. No harmonic tremor was detected following the magnitude 3,1 earthquake. That means this was just volcano-tectonic earthquake due to inflation (assumed) in Öræfajökull volcano.