La Palma eruption update 25th october 2021: Reconfiguration of the main cone continues

La Palma eruption update 25th october 2021: Reconfiguration of the main cone continues

Daily summary

The reconfiguration of the cone continues, with large amounts of lava being emitted, on the new stream to the south of the lava flow field, on top of the original lava flow, and on the stream that runs to the north of Todoque mountain. Some of the areas that were isolated but not covered by lava initially are now being ‘filled in’ by the renewed progress of these flows. The flows towards La Laguna are largely unchanged, and the stream closest to the coast remains about 110 m from the cliffs. There was a partial collapse of the upper part of the cone at 8pm local time, which dragged large blocks down the lava flows away from the cone. In Fuencaliente, the LP-2 road had to be closed due to small landslides in the area, most likely due to the increased earthquake activity, particularly at intermediate depths (10-15 km). 247 events were recorded, peaking at 3.7 mbLg. PEVOLCA have not ruled out further small landslides in steep areas, and if the current trend in earthquakes continues, there is a greater probability of earthquakes reaching intensity values of 6.

SO2 emissions stayed high reaching values of 40,800 tons per day, although this is still an underestimated value, and the ash and gas plume reached 3800 m.  The tremor remains high, with pulses of intensification. Deformation remains stable at stations closest to the eruption, although a slight regional deflation is still recorded further from the eruption, with the signal thought to be of deep origin. Air quality was improved, with SO2 levels remaining low in all stations throughout the day. PM10 concentrations remained below daily threshold levels (50 µg/m³) at all stations except Los Llanos, where values above this were recorded between 10am-4pm local time.

The summit of the black cone is seen looking down into the craters where multiple jets of orange lava, steam and smoke are seen rising upwards

A picture of the main craters inside the main cone on the 25th, taken by a drone. Here the appearance of the eruptive fissure can clearly be seen, with multiple aligned erupting vents. Image credit: 112 Canarias

Sources: Government of the Canary Islands, PEVOLCA, Involcan, IGN, DSN, Cabildo La Palma, 112 Canarias, Tolouse VAAC, Copernicus EMS

Lava flows


Exclusion zone map

Exclusion zones shown here have been approximated from press releases from the Cabildo de La Palma and will not be exact, nor claim to be official maps of the exclusion zones. For official information, please contact the Cabildo de La Palma.

Official social media

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News articles

  • Sky News – Volcano more active than ever – here
  • El País – Fifth vent opens up – here

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Eruption footage

News and Interviews

Witness Testimonies

Interactive Lava Flow Map

Notes: Use the button in the top right to open the map into full screen mode. Use the legend icon in the top left to see the legend and further information about the map. Click on individual days to see an outline of the lava flows on that day.

Interactive Earthquake Map

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Notes: The size of the points represents the size of the earthquake, and the colour represents the depth. The map will also only show a certain number of points at once. For ease of use, we recommend you uncheck all dates and the satellite basemap from the legend in the top right, and inspect the earthquakes one day at a time.

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