La Palma eruption update 6th November 2021: Increase in tremor and lava emission seen in the evening

La Palma eruption – 6th November 2021

Daily summary

There has been minimal evolution in the last few days with regards to the visible eruptive activity and the progress of the lava flows. The furthest south flow, number 11, is almost inactive, although an increased contribution of lava was seen affecting flow number 3 slightly further north, causing some small overflows of the channel. Additionally, a generally increase of lava emission rate was observed at around 6pm local time. Elsewhere, the appearance of yellow-green sulphur deposits on the main cone has been noted, which have formed because of favourable cooling conditions that produce these deposits. Seismicity continues to decrease relative to the last week, with 35 earthquakes being recorded mostly at intermediate (10-15 km) depths, with the day’s largest earthquake being a mbLg 4.5 event at 36 km depth. Favourable meteorological conditions for air quality and the operation of the airport continue.

A local 9 cm deformation has been recorded at the Jedey LP03 station closest to the eruption site, although no significant signals are seen in the other proximal GPS stations, with slight deflation at distant stations. SO2 emissions were estimated to be >10,000 tons per day, whilst the ash and gas plume reached 2500 m. Satellite measurements suggests a downward trend in the SO2 emissions since the start of the eruption. Tremor showed a 7-hour intensification from 6 pm local time coinciding with the increase in eruptive activity. SO2 levels were between reasonably good and fair levels, although most of the fair levels were seen at the Los Llanos and Puntagorda stations, with the hourly threshold (350 μg/m3) at midday as well as the daily threshold (125 μg/m3) being exceeded at the latter. 24-hour moving average PM10 levels remained at extremely unfavourable levels at Los Llanos, whilst PM10 levels remained much lower at the rest of the stations.

A map of the area affected by the eruption with outlines of the extents of the lava flows on different days being shown by different colour shapes

The latest available data on the extent of the lava flows, showing the limited progress onto new ground made by the lava flows in the last week: Copernicus EMS

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

To see our full social media archive, visit our open data section or click here.

News articles

  • El Pais – Very good deep dive into the mechanism of the eruption and monitoring parameters – here
  • DW News – Interviews with residents and tourists – here
  • inews – Impact of no aid on residents – here

To see our full news archive, visit our open data section or click 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

click here to enlarge

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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