Small earthquake swarm next to Bláfjallaskáli in Brennisteinsfjöllum volcano

Yesterday (26-June 2024) at 17:07 UTC an earthquake with magnitude of Mw3,1 took place in Brennisteinsfjöll volcano, not far from Bláfjallaskáli area. That is a popular skiing area during the winter.

Green star just south of Reykjavík area in the Bláfjöll area in Brennisteinsfjöll volcano. Smaller dots all over Reykjanes peninsula showing smaller earthquakes in the last 48 hours.
The earthquake activity in Brennisteinsfjöll volcano. Copyright of this image belongs to Icelandic Met Office.

This earthquake was part of a small earthquake swarm in the same area. It seems to have quieted down again.

Earthquake in Brennisteinsfjöll volcano

Yesterday (23-June 2024) at 22:42 UTC an earthquake with magnitude of Mw3,1 took place in Brennisteinsfjöll volcano.

Green star in Brennisteinfjöll volcano, that are located east of Kleifarvatn lake on Reykjanes peninsula. This is south of Reykjavík city. There are dots showing smaller earthquakes on Reykjanes peninsula.
Earthquake in Brennisteinfjöll volcano, marked by the green star. Copyright of this image belongs to Icelandic Met Office.

There are no reports of this earthquake being felt. Aftershocks are a possibility in this part of Brennisteinsfjöll volcano.

Earthquake activity in Katla volcano

Yesterday (19-June 2024) at 21:26 UTC. The largest earthquake in this swarm had a magnitude of Mw3,3. Several smaller earthquakes happened soon after.

Green star and red dots in Katla volcano caldera.
Green star showing the location of the largest earthquake in Katla volcano. Copyright of this image belongs to Icelandic Met Office.

Since then this activity has quieted down. It is impossible to know if anything more is going to happen in Katla volcano at the moment. There is more activity in Katla volcano during the summer in Iceland.

Update on the eruption in Sundhnúkagígar on 30. May 2024 at 00:49 UTC

This is a short update on the eruption in Sundhnúkagígar on 30. May 2024 at 00:49 UTC. This might be the only update on this eruption, since normally, eruptions in Sundhnúkagígar only last one to three days normally. If that happens now remains to be seen.

Yesterday (29. May 2024) at 12:46 UTC an eruption started in Sundhnúkagígar, close to a small mountain called Sýlingafell and other nearby mountains. This is also the same area that has had eruptions in recent months. This eruption was large and peaked at 2000m3/sec. Since then it has slowed down and is maybe only around 200m3/sec to 600m3/sec for now. The flow from the eruption is going to change without warning and quickly. The eruption fissure today was at the longest around 4 km long. Currently, at the writing of this article, the eruption fissure is around 1 to 2,5 km long. How long the fissure is going to change without warning.

The eruption fissure seen from Þorbjörn mountain today at 12:58:01. A large gas cloud is coming from the eruption in a day that is slight cloudy but with sun at that moment.
The eruption just as it had started. Picture from Rúv web camera.
The eruption at 12:47:48 UTC as it was starting. The lava fountains are reaching up to 70 meters up in the air and the gas cloud keeps growing.
The eruption as it was starting. The picture is from Rúv web camera.
The eruption as it was at 12:51:24. The peak lava fountains are reaching slightly more than 70 meters up in the air and the fissure is expanding to the south and north. Gas cloud is growing and drifting to the east.
The eruption at the start. Screenshot from Rúv web camera.
The eruption as it was at 16:12:24 UTC and reaching peak of its activity. I am not sure what the peak is on this image, but based on the lava flow that is going over a small hill. It was high and a strong lava flow was happening.
The most active hour in the eruption. Screenshot from Rúv web camera.

Eruption has started in Svartsengi, Sundhnúkagígar area

Eruption started in Sundhnúkagígar area í Svartsengi volcano. The start of eruption seems to have been at 12:47 UTC or around that minute. The fissure is getting longer as this article is being written.

The fissure and the eruption column in red and orange colour. A large gas cloud drifts to the east from the eruption.
The eruption in Sundhnúkagígar. Screenshot from Rúv web camera.

Earthquake swarm in Krýsuvík-Trölladyngja volcano

Today (6. May 2024) at 17:43 UTC an earthquake with magnitude of Mw3,3 took place in Krýsuvík-Trölladyngja volcano. This earthquake was felt in Reykjavík area.

Green star west of Kleifarvatn lake on Reykjanes peninsula in Krýsuvík-Trölladyngja volcano. Earthquakes in other volcanoes are also visible on this map.
Earthquake activity in Krýsuvík-Trölladyngja volcano. Copyright of this image belongs to Icelandic Met Office.

At the writing of this article. This earthquake swarm is ongoing. It however has not constant and only has few earthquakes every once in a while at the writing of this article. This earthquake activity might increase, because it might be connected to stress changes in the crust because of inflation in Svartsengi volcano.

Earthquake swarm in Eldey volcano (out on the Reykjanes ridge)

Today (5-May 2024) at 20:33 UTC an earthquake with magnitude of Mw3,5 took place close to Eldey on the Reykjanes ridge. This is out in the ocean and considerable distance from land, so more earthquakes are happening then are being registered by Icelandic Met Office.

Green star and red dots out in the ocean, on the Reykjanes ridge. This is the current earthquake swarm on Reykjanes ridge.
Earthquake swarm in the Eldey volcano. Copyright of this image belongs to Icelandic Met Office.

This earthquake swarm is ongoing at the writing of this article. There are earthquakes that are only going to appear on Icelandic Met Office website after manual review in this earthquake swarm.

Earthquake activity in Reykjanes volcano

Today (22. April 2024) at 04:53 UTC an earthquake swarm started in Reykjanes volcano. This was not a strong or a large earthquake swarm. Largest earthquake only having a magnitude of Mw3,1. All other earthquakes where smaller in magnitude.

Green star just off the south coast of Reykjanes peninsula to the west part of it. There are also smaller dots that show smaller earthquakes in the same area.
Earthquake activity on the Reykjanes ridge and in Reykjanes volcano. Copyright of this image belongs to Icelandic Met Office.

This earthquake activity suggest a magma movement. It is however too little to start an eruption at the writing of this article. That can change without warning. Since the condition that the Reykjanes volcano is in is unclear, since its in part under the ocean and that makes monitoring it properly difficult and impossible in some areas.

Moderate earthquake in Bárðarbunga volcano this morning (21. April 2024)

This morning on 21. April 2024 at 06:37 UTC an earthquake with magnitude of Mw5,4 took place in Bárðarbunga volcano. Largest aftershock had a magnitude of Mw3,0. There’s no earthquake swarm going on at the time of writing of this article. This earthquake was felt in some parts of Iceland but was possibly detected over most of Iceland in a quiet locations.

Green star showing the location of the large earthquake. Its located in the eastern part of Bárðarbunga volcano caldera.
Earthquake activity in Bárðarbunga volcano. Copyright of this image belongs to Icelandic Met Office.

This is the strongest earthquake in Bárðarbunga volcano since the eruption in Holuhraun in the year 2014 to 2015. This earthquake activity is a long term signal that inflation in Bárðarbunga volcano has reached a new level. Eruption is not going to happen or is extremely unlikely to happen following this earthquake or in next few years. Shortest time between eruptions in Bárðarbunga volcano is around 10 years.

This is how I recorded the earthquake on my own seismometer.

The wave form from the earthquake. A sharp dark spike on the recording of the seismometer. At the end there are strong separated waves that show the surface waves.
The magnitude Mw5,4 earthquake as it was recorded on my own seismometer.