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La Palma eruption update 18th december 2021: 5 full days without tremor or eruptive activity

By Geotenerife 12 months ago
Home  /  VolcanoStories  /  La Palma  /  Day by Day  /  La Palma eruption update 18th december 2021: 5 full days without tremor or eruptive activity
 By Geotenerife  18th Dec 2021

La Palma eruption update 18th december 2021: 5 full days without tremor or eruptive activity

Daily summary

Volcanic tremor continues at background levels, with no eruptive activity seen, for the 5th full day in a row, with each passing day of no activity increasing the likelihood that the eruption is finished for good, although a reactivation cannot be ruled out. PEVOLCA is keen to stress there is still large dangers from the temperatures of the lava flows and the associated gases. Small remnants of lava flows breaking out from lava tubes have still been observed in the south, associated with flow number 11. Furthermore, it is anticipated that gas levels may lead to entry into the southern parts of the evacuated zones being halted sporadically in the next days.

The SO2 emissions from the plume have decreased, registering a low (50-99 tonnes per day) value. However, PEVOLCA continues to explain these emissions are due to the solidification of superficial magma in the conduits, rather than magma ascent. Air quality with respect to SO2 and PM10 concentrations remain stable, and largely good. SO2 concentrations were good in all stations throughout the day, except Tazacorte and San Antonio which recorded some periods at regular values. PM10 levels in all stations was good, except Los Llanos de Aridane, where reasonably good levels were recorded, although this represents a significant improvement in PM10 levels relative to previous days.

Deformation remains stable across the network, showing no trend. 22 earthquakes were recorded, peaking at M2.6. The majority of earthquakes were at intermediate depths (<20 km), with a slight increase in the proportion of deep (>30 km) earthquakes seen. As in previous days, the number of events is inflated due to a number of small earthquakes (<M2.0) being detected and located, that would not be possible without the background tremor values seen currently. This represented 15 out of the 22 events recorded.

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

  • The Times – We will rebuild: life rekindled after La Palma volcano – here
  • RTVE – Latest on the eruption – here
  • Canarias Ahora – The volcano emits a small remnant lava flow in Las Hoyas – 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.

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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