New Seismic Swarm Recorded in Teide National Park
Tenerife has registered a new swarm of low-magnitude tremors in just three hours. The Canary Islands Volcanological Institute (Involcan) confirmed the activity on Tuesday 30 December via its social media channels. “The Involcan seismic network has recorded a new seismic swarm on the island of Tenerife, occurring between 22:30 on 29 December 2025 and 01:14 on 30 December,” reported one of the research centres responsible for monitoring volcanic activity on the island, alongside the National Geographic Institute (IGN).
Details of the Seismic Events
Involcan, based at the Technological and Renewable Energies Institute in Granadilla de Abona, detailed that a total of 14 seismic events were detected during this period, of which 11 could be located. The maximum magnitude was 1 on the Richter scale. There are no reports of any of these tremors being felt by the public. The earthquakes were concentrated in the southwest of the Las Cañadas caldera, at depths mostly between 8 and 16 kilometres, within the protected area of Teide National Park and its surroundings. This zone has been experiencing earthquake series like this since 2016.
Familiar Pattern and Eruption Risk Assessment
The analysis of the signals, Involcan specifies, reveals “a predominance of low frequencies, behaviour similar to that observed in seismic swarms recorded in previous months and years, including the one that occurred on 7 November 2025.” This episode “does not imply changes in the probability of a volcanic eruption in the short or medium term, which remains low.” While scientists remain alert, they clarify that for the moment there is no imminent risk of an eruption in Tenerife.
This has been stated on several occasions by the Director of Volcanic Surveillance at Involcan, the Italian researcher Luca D’Auria. The researcher, who joined Involcan in November 2016 from the National Institute of Geophysics and Volcanology in Naples, has specified that, based on historical studies, the probabilities of a volcano becoming active on the island are: 1% in the next 12 months, 4.9% in the next five years, 9.5% in the next decade, 39.3% in 50 years and 63.2% in a century.
Ongoing Activity in South Tenerife
Another seismic-volcanic hotspot that has been active in recent months alongside Tenerife is located off the south coast. Although activity has decreased, low-magnitude movements have continued since those recorded by the IGN in October. A succession of earthquakes off the south coast of Tenerife has kept volcanologists on alert, as reported by EL DÍA on 19 October.
It began on Thursday 16 October at points in the sea very close to the coastline of the municipalities of Fasnia, Arico and San Miguel de Abona. By midday on Sunday 19 October, 30 earthquakes had been recorded, one of which was felt by the population. These are the ones listed on the website of the National Geographic Institute, which leads volcanic surveillance in the Canaries. However, this series included more tremors that were not recorded due to their low magnitude.
The largest was located on Saturday 18 October at 20:17 and had a magnitude of 3.4, higher than the rest in this series. It was felt by residents in areas of La Orotava, La Laguna and Los Realejos. According to the National Geographic Institute, the epicentre of this 3.4 magnitude tremor was 29 kilometres below sea level. Of this thirty or so earthquakes in the same zone, only two more exceeded magnitude 2: one just three hours after the one felt by the public, at 2.6, and another recorded on Friday 17 October at 2.3.
Seismic Activity Near El Hierro
Significant volcanic activity has also been recorded in recent days near the island of El Hierro. The IGN located a total of eight earthquakes to the southwest of the island in the early hours of Monday 29 December. The movements detected by the island’s network of seismographs were concentrated between just after midnight and half past six in the morning. The largest tremor, recorded at 01:56 near El Pinar at a depth of 36 kilometres, had a magnitude of 3.8. Despite this, residents of El Hierro have not reported feeling this earthquake.
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