Day: September 27, 2023

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Earthquake swarm in Reykjanes volcano (ongoing)

Today (27. September 2023) an earthquake swarm took place in Reykjanes volcano on Reykjanes peninsula. This earthquake swarm is ongoing at the writing of this article. At the writing of this article, the largest earthquake had a magnitude of Mw3,3 and the second largest earthquake had a magnitude of Mw3,1.

Green star on the Reykjanes peninsula in the Reykjanes volcano, there's also a green star at Reykjanestá that is next to the ocean. A lot of orange and red dots at this same location.
Earthquake activity in Reykjanes volcano. Copyright of this image belongs to Icelandic Met Office.

The source of this earthquake swarm seems to be magma intrusion into this part of Reykjanes volcano. I don’t know if this is going to result in a eruption, this earthquake activity seems to be too low for that to happen. That might change without warning, as sometimes happens with volcanoes. This is at least highly active time period now and what is going to happen is unclear.

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Earthquake in Kleifarvatn lake

Yesterday (26. September 2023) at 18:42 UTC an earthquake with magnitude of Mw3,3 took place in Kleifarvatn lake. Few smaller earthquakes followed this earthquake, both before and after.

Green star in Kleifarvatn lake in Krýsuvík-Trölladyngja volcano. A lot of other earthquakes activity is also happening on Reykjanes peninsula at the moment.
Earthquake activity in Kleifarvatn lake. Copyright of this image belongs to Icelandic Met Office.

This earthquake is possibly because of an inflation in Fagradalsfjall volcano that is to the west of this location. There is no sign that an eruption is about to start at this location in Kleifarvatn lake.