15 Dec La Palma eruption update 15th december 2021: Tremor continues at background levels
La Palma eruption update 15th december 2021: Tremor continues at background levels
Throughout the 15th, volcanic tremor continued to be at background levels and there was no eruptive activity on the surface, apart from slight degassing from the main craters. However, PEVOLCA was keen to remind people that a high risk still exists, and that civil protection measures, exclusion zones and evacuation zones are being fully maintained. To start thinking about the end of the eruption, the current state of the volcano must be maintained for at least 10 days.
Because of the lack of activity, SO2 emissions from the plume register extremely low (<5 tons per day) for the first time. Air quality with respect to SO2 and PM10 concentrations was good or reasonably good in all stations, aside from Los Llanos de Aridane, where the 24-hour moving average for PM10 concentrations reached unfavourable levels.
Deformation remains stable across the network, and 44 earthquakes were recorded yesterday, peaking at M3.4, concentrated at intermediate depths (<20 km). 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 over the last couple of days.
Sources: Government of the Canary Islands, PEVOLCA, Involcan, IGN, DSN, Cabildo La Palma, 112 Canarias, Tolouse VAAC, Copernicus EMS
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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- Reuters – Inside La Palma’s volcano: lull in activity allows look into crater – here
- The Guardian – ‘Tremor is zero’: La Palma volcano may be calming down – here
- Daily Mirror – Tui cancels flights until February 2022 – here
- The Sun – Brits ‘STUCK’ in Tenerife after ‘flights AXED’ over toxic fumes from La Palma volcano – here
To see our full news archive, visit our open data section or click here.
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