This is a short update. Information here can go outdated quickly and without warning. I am sorry for the Google Adsense popup ads. They turned them on without telling me and I can’t turn it off. I never run this type of ads because this is just annoying pop-up and I don’t allow that on my website. Google Adsense ads are going to be gone by the end of this month anyway (regardless of anything else).
The situation is similar to yesterday. Earthquake activity continues to drop for now. But that might be a short quiet because the dyke and the rift valley continues to grow. Inflow of the magma continues, at slightly slower rate than on Friday 10. November 2023.
The inflow of magma on Friday 10. November 2023 was 1000 cubic meters per second according to Icelandic Met Office and experts.
The rift zone that is lowering is on the western side of the Grindavík town. The east side is rising up to almost the same amount. Parts of Grindavík have lowered around 1 to 2 meters. Some of the cracks in the grounds are up to 20 meters deep or deeper.
There is a lot of damage in Grindavík to many houses. If not from earthquakes, then from the formation of the rift valley.
Eruption risk remains high and the dyke seems to holds its length at 15 km. This can change without warning.
The rift valley is now around 2 km wide according to the news. The rift valley continues to get wider according to measurements.
There has not been any drop in harmonic tremor on SIL stations next to the dyke, even if earthquake activity has lowered. This is because of the ongoing inflow of magma into the dyke.
It is not possible to know what happens next. It is my view that an eruption is going to start in this area. This is a start of a activity that is going to last for a while until it quiets down.
This dyke activity might also upset the volcanoes Fagradalsfjall and Reykjanes and what is happening in them. Anything can happen in them without warning. If not eruption, then earthquake activity.
I’ll post update when I have some new information about this situation.
This is a short update, since the situation is changing quickly and without much warning. This just looks like it is quiet, it is not.
Grindavík town is sinking and parts of the town have lowered by as much 1 meter when this article is written. This is a large area, large enough to be called rift valley. This was reported by mbl.is here in Icelandic. This was just discovered today when some measurements where taken.
Magma might be as shallow as few dozen meters under the surface where it is the most shallow. This has been reported by mbl.is here in Icelandic. This is a live link and the news item in question might be removed or gone in few hours.
This is a event that was not expected. Most of the inflation until Friday 10. November 2023 had happened in Svartsengi (Reykjanes volcano) and in Fagradalsfjall volcano. There had nothing been happening at Sundhnúksgígar to the north-east of Grindavík. Until Friday 10. November at around 08:00 when a earthquake swarm started in that location. Originally it was though those where just tension related earthquakes, but that view (according to reports) changed early in the morning at Icelandic Met Office. Everything did go crazy in earthquakes between 16:00 until 19:00 on Friday. This earthquake swarm was really dense and many earthquakes with magnitude Mw4,0 took place inside Grindavík town.
There is damage in Grindavík, both roads and houses because of the displacement. Damages to pipes, electricity wires and other infrastructure.
The dyke seems to be few dozen meters wide and up to 1 meters deep. It might be different wide and deep at its 15 km length. I have not found any useful information about this. Just information on its length that was last time I checked, 15 km long.
This is not a small volcano event. What I don’t know and this doesn’t seems to be known. What volcano is causing this. This might be Fagradalsfjall volcano or this might be Reykjanes volcano.
I’ll post more information about this when I know more or if anything more happens if I can.
This is a short article. Its going to outdated quickly.
Dyke has or is forming under Grindavík town. This dyke starts at Sundahnjúkar in north-east of Grindavík town and is going to down to Grindavík. This is at the moment around 4 to 7 km long dyke. It might get longer and reach the ocean.
There’s a mandatory evacuation order in place. Everyone in Grindavík town has two hours (from around 23:00 UTC) to leave the town. Many people had already left because of the heavy earthquake activity today (10. November 2023).
Earthquake activity remains heavy, but is lower than it was at around 17:00 to 19:00 UTC. This might change again without warning.
GPS data suggests this is more magma than in all of last three eruptions combined.
This magma might be from Fagradalsfjall volcano. This is currently only an idea. That means the magma in Reykjanes volcano has not started to move to the surface. That might also happen without warning at any time, since that inflation continues.
I’ll post more information when I got them. The situation is unclear and there’s a lot of wrong information out there so check your sources.
This is a short update because events are changing quickly.
Length of the eruption fissure is uncertain, reports are conflicting. The numbers I’ve seen are from 200 meters to 900 meters long. This also might be a case of growing fissure eruption.
Harmonic tremor on the SIL station Fagradalsfjall continues to grow. Suggesting that the eruption is increasing in power since it started. This sometimes happens in lava eruptions.
The lava is flowing to the south. It might reach Meradalir valley in about one week to three weeks. Some of the lava is flowing to the north, but a lot of less of it and is only expected to flow in the nearby area. There is no risk at current time for any damage to infrastructure or property.
There’s a risk of new fissures opening up in this area without warning.
This area is remote and difficult to go towards. Police has closed roads for the time being for safety reasons.
I’ll post new update soon as I have any new information or if anything changes. Experience has shown that this type of eruptions are rather uneventful for a longer time periods. I’ll adjust my updates in accordance with that.
This is going to be a really short article. Because an eruption might be about to start. Difficult to be sure, but there’s a chance. Eruption has not started at the writing of this article.
Largest earthquake in the last 24 hours seems to be a magnitude Mw4,3. I no longer can keep up with all this earthquake activity.
Inflation in area close to Keilir has reached 200mm (20cm) in less than 48 hours when this started.
Inflow of magma is estimated to be 88m3/s and that is a lot of magma moving and moving fast.
It is unclear where the eruption is going to happen. But there has been a drop in earthquake activity that strongly suggest that magma is close to finding a path to the surface. According to measurements, the magma is now less than 1 km away from the surface.
This is a short update since there is a lot going on.
Largest earthquake recorded at the writing of this article is Mw4,8 from earlier this morning.
Larger earthquakes are growing in numbers. There is now also a warning for possible Mw6,3 earthquake on Reykjanes peninsula following this earthquake swarm and dyke intrusion into Fagradalsfjall mountain.
The dyke intrusion is coming up just south of Keilir mountain.
Based on what I am seeing, it is possible that current dyke intrusion into Fagradalsfjall mountain is larger than the first eruption in March 2021. If this is accurate is a wait and see situation until an eruption starts.
It is possible to view the earthquake activity in real time here, at Raspberry Shake website.
All data now suggest that an eruption is going to happen. Where it is going to start erupting is impossible to know and it is not possible to know when it is going to start erupting.
I’ll try to post update when more is known about what is going on.
This is a short update since this situation is changing quickly.
Largest earthquake recorded so far had a magnitude of Mw4,8 and was felt over a wide area.
Uncertainty level has been declared for Fagradalsfjall mountain area because of this earthquake activity and the risk of an eruption.
Current depth of the magma is now 3 to 6 km and is getting shallower by each hour.
Over 2000 earthquakes have been recorded at the writing of this article.
The only web camera that I know of at the moment and is showing Fagradalsfjall mountain is this one here. When the eruption starts, it should be visible in some part on this web camera. I hope that other closer web cameras are going online soon. Those where run by Rúv and mbl.is in last eruption.
This is a tricky thing to write about. Because nothing has started on the surface and might not start on the surface. It seems that something is going on in Grímsfjall volcano. Since the glacier flood is almost over or has finished the harmonic tremor level should have started dropping, it has not done so and I am not sure why that is. This might be boiling of the hydrothermal systems in Grímsfjall volcano when the pressure on the suddenly drops. Currently the harmonic tremor doesn’t look like it has reached eruption levels, that might change without warning.
It is difficult to know what is going on. Since there seems to have been a change in Grímsfjall volcano after the big eruption in May 2011. What that change is I don’t know. It seems to have slowed down Grímsfjall volcano eruption rate from what it was, its been 11 years since last eruption. It might continue if no eruption starts now following the small glacier flood that just ended.
It has been reported in the news today (18-August-2022) at Rúv that more pulse activity has been seen. This results in lava being thrown up high in the air.
This is the same pattern as happened last year in the eruption in Geldingadalir valley. It took a while for that eruption to end and that might also be the case now.
Other than this, there have not been any other news of the eruption. There also has been interesting events out in the lava field, where the new lava is compressing the lava from 2021, resulting it being squeezed out at the edges. Since there is still flowing lava in the lava field from 2021 and that is going to be like that for many decades until this lava field cools through.
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