The eruption has ended, according to the Icelandic Met Office, bringing a close to the latest episode of volcanic unrest on the Reykjanes Peninsula, the restless volcanic zone that has repeatedly drawn global attention since activity resumed there in 2021 after nearly eight centuries of quiet.
Key takeaways
- The Icelandic Met Office has confirmed the eruption is over.
- The eruption was on the Reykjanes Peninsula, Iceland’s most active volcanic zone in recent years.
- Authorities will continue monitoring the area for signs of renewed unrest.
- Travellers and residents should follow official guidance before returning to any restricted zones.
- The situation can change quickly — conditions on Reykjanes have shifted with little warning in past episodes.
The confirmation marks the end of an eruptive phase that, like its predecessors in this current cycle, kept scientists, civil protection authorities, and residents of the nearby town of Grindavík on alert. The Reykjanes Peninsula has now seen multiple eruptions in relatively quick succession, a pattern volcanologists have described as characteristic of a new eruptive period in the region.
For now, the lava has stilled. But in Iceland, that rarely means the story is over.
What the end of the eruption means for the Reykjanes Peninsula
When the Icelandic Met Office declares an eruption finished, it signals that volcanic tremor has dropped to background levels and that no active lava effusion has been detected for a sustained period. That determination is based on continuous monitoring — seismic sensors, GPS ground-deformation instruments, and aerial observation — carried out by the Met Office in coordination with the University of Iceland’s Institute of Earth Sciences.
The declaration does not automatically mean that access restrictions are lifted. Civil protection authorities, operating under the Department of Civil Protection and Emergency Management — known in Icelandic as Almannavarnir — make those calls independently, weighing gas emissions, ground stability, and the risk of further activity before opening roads or allowing residents back to their properties.
Grindavík, the fishing town of roughly 3,500 people that sits closest to the most recent eruption sites, has experienced repeated evacuations since late 2023. Each time activity has paused, the process of return has been careful and conditional. Residents and officials alike have learned not to treat any pause as permanent.
How Iceland monitors volcanic eruptions in real time
Iceland sits directly on the Mid-Atlantic Ridge, the boundary where the North American and Eurasian tectonic plates pull apart at roughly 2.5 centimetres per year. That geological reality makes the country one of the most volcanically active places on Earth, and it has driven investment in some of the world’s most sophisticated eruption-monitoring infrastructure.
The Icelandic Met Office — Veðurstofa Íslands in Icelandic — operates a network of more than 300 seismometers and GPS stations across the country. On the Reykjanes Peninsula specifically, that network was significantly expanded after the first eruption of the current cycle at Fagradalsfjall in March 2021, the first volcanic event in the region since the 13th century.
Real-time data from that network feeds into hazard assessments that are updated continuously and published on the Met Office website, giving both authorities and the public a live picture of what the ground beneath Reykjanes is doing at any given moment.
Scientists have noted that the current eruptive period is likely to continue producing intermittent activity for years or possibly decades. Magma accumulation beneath the peninsula has not ceased, and each eruption represents a partial release of pressure rather than a definitive end to the broader volcanic cycle.
What happens next on Reykjanes?
The immediate priority for authorities is assessing the state of infrastructure in and around the affected area. The geothermal power plant at Svartsengi, which provides electricity and hot water to much of the peninsula including Reykjavík’s suburbs, has been a focal point of protective efforts throughout this eruptive cycle. Defensive earthworks constructed around the plant have been tested repeatedly, and engineers will assess any new lava flows that reached the perimeter.
The Blue Lagoon geothermal spa, located just a short drive from the eruption zone along Route 43, has opened and closed multiple times in response to volcanic activity. Its status following this latest eruption had not been confirmed at time of publication, but the facility has shown resilience and an ability to resume operations relatively quickly once conditions allow.
For travellers planning to visit the Reykjanes Peninsula — including the popular Bridge Between Continents walking site near Reykjanesbær, or the dramatic coastal cliffs at Reykjanestá — the advice from authorities is to check road and access conditions through Vegagerðin, the Icelandic Road and Coastal Administration, before setting out. Conditions can change within hours.
Monitoring by the Icelandic Met Office will continue without interruption. Any significant change in seismic activity, ground deformation, or gas emissions will be published promptly on the Met Office website and through Iceland’s civil protection alert channels.
Frequently asked questions
Is it safe to visit the Reykjanes Peninsula now that the eruption has ended?
The end of an eruption does not automatically mean all areas are open to the public. Access restrictions are managed by Iceland’s Department of Civil Protection and Emergency Management and can remain in place even after volcanic activity stops, due to risks from volcanic gases, unstable ground, and the possibility of renewed unrest. Visitors should check current road and access conditions on the Vegagerðin website or through the Safetravel Iceland portal before travelling to the peninsula.
How long do eruptions on the Reykjanes Peninsula typically last?
Eruptions in the current Reykjanes cycle have varied considerably in duration — from events lasting only a few days to others that continued for several weeks. Scientists have noted that the broader eruptive period, which began in 2021, is likely to continue producing intermittent activity for years. The interval between eruptions has not followed a predictable pattern, which is why continuous monitoring by the Icelandic Met Office is maintained at all times.
What happens to Grindavík residents after an eruption ends?
Decisions about whether Grindavík residents can return to the town are made by civil protection authorities based on assessments of gas levels, infrastructure integrity, and volcanic risk. In previous episodes, partial returns have been permitted while full access remained restricted. Residents have in some cases been allowed back to retrieve belongings or check properties before a full residential return was authorised.
Does the end of this eruption mean volcanic activity in Iceland is over?
No. Iceland is one of the most volcanically active countries on Earth, and the Reykjanes Peninsula is currently in an active eruptive period that scientists expect to continue for the foreseeable future. The end of a single eruption reflects a pause in surface activity, not a cessation of the underlying magmatic processes. Further eruptions in the region are considered probable.
Who declares an eruption officially over in Iceland?
The Icelandic Met Office — Veðurstofa Íslands — is the authoritative body responsible for volcanic monitoring and for issuing official statements on eruption status. Their assessments are based on seismic data, ground deformation measurements, gas monitoring, and aerial surveillance. Civil protection decisions that follow, such as lifting evacuation orders, are made by the Department of Civil Protection and Emergency Management.
Original source: Icelandic Met Office — News
