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La Palma eruption update 28th November 2021: New vent opens on the flanks of the main cone

By Geotenerife 1 year ago
Home  /  VolcanoStories  /  La Palma  /  Day by Day  /  La Palma eruption update 28th November 2021: New vent opens on the flanks of the main cone
 By Geotenerife  28th Nov 2021

La Palma eruption – 28th November 2021

Daily summary

The activity of the eruption remains stable, with a mixed strombolian behaviour showing both jets of ash and also the emission of lava flows. At approximately 3am, a new strombolian vent opened up to the northeast at the base of the main cone, and is producing a slowing moving lava flow heading in the direction of La Laguna.

Since the early hours of the morning, there has been increased tremor in the shallow reservoir between 10-14 km depth, with >70 earthquakes peaking at M3.5 being recorded as of 11am. For context, throughout yesterday, only 75 earthquakes were recorded. However, deeper (>20 km) seismicity is lower today.

A switch in wind direction from NE to W has brought better weather and has allowed the reopening of La Palma airport today after cleaning. For air quality, latest data show the SO2 and PM10 levels are good or reasonably good apart from in Los Llanos De Aridane where the SO2 levels are ‘regular’, although they are better than the last few days. Access to the exclusion zone is only allowed to the northern area today, as air quality thresholds have been exceeded in the southern part of the zone.

No activity is still being recorded from the vent that opened up to the south of the main cone on the 25th, and the lava flow from that vent has now joined the main field. The lava flow field now exceeds 1100 ha, and the new land created accounts for roughly 50 ha of this. It is estimated that 1506 buildings have been affected, along with 342 ha of crops including 212 ha of banana plantations.

The black flanks of the main erupting cone with multiple vents on the flanks either oozing out lava or shooting out large jets of lava

The new strombolian vent that opened up on the NE flank of the main cone, along with multiple other lava emission points seen further down the flanks. Image credit: IGME, CSIC

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

Lava flows

Earthquakes

Official social media

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

News articles

  • Volcano Discovery – La Palma eruption likely largest in 500 years – here
  • Guide to Canary Islands – La Palma airport reopens – here
  • RTVE – Eruption latest updates – here

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

Found a broken web link? We have archived all of our news articles on the WayBack Machine. You can view the pages by 1. pasting the broken link into WayBack Machine and clicking ‘Browse History’ 2. clicking on the latest capture date and then 3. clicking ‘view capture’. Please let us know of any broken web links by contacting us at enquiries@geotenerife.com.

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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