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La Palma eruption update 21st December 2021: Four more days without activity needed to declare the eruption over

By Geotenerife 11 months ago
Home  /  VolcanoStories  /  La Palma  /  Day by Day  /  La Palma eruption update 21st December 2021: Four more days without activity needed to declare the eruption over
 By Geotenerife  21st Dec 2021

La Palma eruption – 21st December 2021

Daily summary

Volcanic tremor continues at background levels, with no eruptive activity seen, although a reactivation cannot be ruled out. Gas levels were high in the southern coastal area of the evacuated zones, and access from the south was allowed in Puerto Naos and El Remo but not La Bombilla, which extra guidance that people should not go inside buildings in these areas due to the possibility of higher gas levels. Access from the north was allowed as usual. To say the eruptive process is over, PEVOLCA stated the situation must stay the same for the next four days to bring the eruption to 10 days without activity. However, they this would not lead to a change in the short-term emergency situation or restrictions.

The deformation recorded at the LP03 station in Jedey, the closest GPS station to the eruption remains partially reversed, and no other trends are seen across the deformation network. PEVOLCA again reminds that in the El Hierro eruption, residual seismicity and deformation also occurred as the subsurface re-adjusted. 16 earthquakes were recorded, peaking at M3.0 with 6 <M2.0, largely at intermediate (<20 km) depths.

The SO2 emissions from the plume increased slightly, registering a low (50-500 tonnes per day) value. PEVOLCA continues to explain these emissions are due to the solidification of superficial magma in the conduits, rather than magma ascent. Air quality remains most in all stations in relation to SO2 except San Antonio where some regular levels were recorded, and good to reasonably good in all stations in relation to PM10 particles.

(Above) A GIF showing the evolution of the lava flows since the start of the eruption caught on the Sentinel 2 satellite. Video credit: Copernicus EU

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

  • Animal reader – Police find lost La Palma cats – here
  • CNN Spain – The La Palma volcano captured the world’s attention in 2021: the lava left destruction and chaos – here
  • El Heraldo – The UME of Aragon returns from the eruption of the volcano in La Palma – 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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  Day by DayLa PalmaVolcanoStories
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