Volcano and earthquake activity in Iceland
Yesterday (27-June-2022) an earthquake swarm started in Tjörnes Fracture Zone in a area north-west of an place called Gjögurtá. Largest earthquakes where felt in Siglufjörður. The largest earthquake had a magnitude of Mw3,2.
In June 2020 this area had a large earthquake swarm with earthquakes that had a magnitude of Mw5,8. This might be an aftershock of that activity. I am not clear if that is the case, but it is a possibility.
During the night of 10-May-2022 an earthquake swarm took place in Tjörnes Fracture Zone (TFZ). Largest earthquake in this swarm had a magnitude of Mw3,2 and based on distance from the coast it is unlikely that this earthquake was felt.
This earthquake activity is normal for this part of Tjörnes Fracture Zone. It is not possible to know what is going to happen next in this activity if anything and it might just stop.
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During the night of 29-January-2022 an earthquake swarm started south of Grímsey island. This earthquake swarm is rather strong at the writing of this article.
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.
Earthquakes are common in this area and large earthquake swarm happens in this location every 2 to 10 years.
Yesterday (30-August-2021) an small earthquake swarm took place east of Grímsey island in Tjörnes Fracture Zone. Two largest earthquakes had a magnitude of Mw3,2.
This earthquake swarm seems to have stopped for now. This area has frequent earthquake swarms and activity in this area of Tjörnes Fracture Zone might start again without warning.
During the night of 5-August-2021 an earthquake swarm took place in Tjörnes Fracture Zone (TFZ). At the writing of this article this earthquake swarm is ongoing.
Largest earthquake in this swarm had a magnitude of Mw3,0. Other earthquakes where smaller in magnitude. No earthquake has been felt in Grímsey island.
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Yesterday (1-April-2021) an earthquake swarm took place east of Grímsey island. The largest earthquakes in this swarm had a magnitude of Mw3,8 and Mw3,6 and where possibly felt even if that was not reported. Total of 142 earthquakes have taken place when this article is written.
Earthquake activity is very common in this part of the Tjörnes Fracture Zone and it is now just around one year since a large earthquake swarm took place far west of Grímsey island in June 2020. It is difficult to know of more earthquake activity is going to happen at this location in next few days.
Today (25-March-2021) a minor earthquake swarm took place east of Grímsey island. Earthquake swarms are common in this area. Largest earthquake in this swarm had a magnitude of Mw3,0. This earthquake swarm might not be over.
Earthquake activity in the Tjörnes Fracture Zone often starts slowly before increasing. I don’t know if that is going to happen now since this area has been having a lot of earthquake activity in recent months.
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Moving Iceland geology to a bigger server
Because of current high traffic to this website I plan on moving it to a slightly larger server in the time between April to June. I am not sure yet when I can afford the change since this is a slightly more expensive option at 79€ a month from current price of 9,5€ a month (I also have other websites here that I won’t move since they get little to no traffic at all). I am also expecting far higher traffic to this website in the future when other Icelandic volcanoes start to go active for a long and short time period.
Yesterday (01-March-2021) at 19:53 UTC an magnitude Mw3,3 earthquake took place north-east of Grímsey island. This might be a new earthquake swarm in this area since earthquake swarms in Tjörnes Fracture Zone often star slowly. Earthquake swarms are common in this part of Iceland.
There is a chance of a stronger earthquake swarm in this area. Currently the activity remains small and nothing more might happen. This earthquake activity is not connected to what is happening on the Reykjanes peninsula.
Next article about Reykjanes peninsula activity is going to be written tomorrow (2-Mars-2021) unless something major happens.
Since 4-February-2021 an earthquake swarm has been going on east of Grímsey island in the Tjörnes Fracture Zone. This was not a large earthquake swarm, with mostly just earthquakes with magnitude of Mw0,0 to Mw3,0. With largest earthquake taking place on 9-February-2021 at 20:20 UTC with magnitude Mw3,0. After that earthquake activity seems to have slowed down considerable amount.
Earthquake activity is common in this area and in 2020 several large earthquake swarms took place in the Tjörnes Fracture Zone.
