Day: October 29, 2021

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Earthquake activity east of Grímsey island

Yesterday (28-October-2021) an earthquake swarm took place east of Grímsey island. The largest earthquake had a magnitude of Mw3,9 at 22:06 UTC. It is not know if it was felt in Grímsey island.

Earthquake activity east of Grímsey island. Largest earthquake shown by a green star.
Earthquake activity east of Grímsey island. Copyright of this image belongs to Icelandic Met Office.

Earthquakes are common in this area and large earthquake swarm happens in this location every 2 to 10 years.

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Earthquake activity west of Kleifarvatn lake

Yesterday (28-October-2021) two earthquakes with magnitude of Mw3,6 and Mw3,0 took place west of Kleifarvatn lake (in Krýsuvík-Trölladyngja volcano system). The first earthquake with magnitude of Mw3,6 took place at 18:36 UTC and the second earthquake with magnitude of Mw3,0 took place at 23:11 UTC. Other earthquakes that took place where smaller in magnitude.

Earthquake activity west of Kleifarvatn lake. Two green stars on top of each other show the strongest earthquakes.
The earthquake activity in Krýsuvík-Trölladyngja volcano system. Copyright of this image belongs to Icelandic Met Office.

This earthquake activity seems to be connected to magma movements in the area. It has not yet and might not result in a eruption since this is in a different fissure area. It is unlikely that this activity is connected to the magma movements that are ongoing close to Fagradalsfjall mountain.