Today (14-May-2022) at 16:56 UTC an earthquake with magnitude of Mw4,8 took place in Brennisteinsfjöll volcano. This earthquake was clearly felt in Reykjavík, Selfoss and large parts of south and south-west Iceland. Depth of this earthquake seems to be 7,8 km.
It is unclear in my personal view if this is just a normal fault earthquake that might be possibly connected to SISZ or if this is because of stress changes from all the inflation of Krýsuvík and Fagradalsfjall volcanoes. There is a chance of larger earthquake in this area following this earthquake. When that earthquake might happen is impossible to know.
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Article updated at 04:56 UTC on 15-05-2022.