During the night of 30-December-2021 at 04:16 UTC an earthquake with magnitude of Mw3,0 was felt in Selfoss town and Hveragerði town. This earthquake was part of a swarm in the area that is ongoing at the writing of this article.
There are no volcanoes in this area so this is only a tectonic activity. It is not possible to know when this earthquake swarm ends. This might be a aftershock activity after the Mw6,3 earthquake in SISZ that took place in this location in the year 2008. I expect this earthquake swarm to continue to few more days to weeks and then just end quietly.
At 03:17 UTC on 26-November-2021 an earthquake with magnitude of Mw3,5 took place in Vatnafjöll mountains that are south of Hekla volcano. This earthquake was not felt or it was not reported to Icelandic Met Office.
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