La Palma eruption – 30th November 2021
The eruptive activity remains intermittent from some or all of the vents in the main cone at times, although lava emission has continued from the main cone. Elsewhere, at the new secondary cone at the NE of the main cone, there have been several small landslides. There are two main active lava flows, the flow to the north of the flow field near Tajuya attached to previous flows, and a flow to the west of Todoque Mountain covering new land. Seismicity increased significantly, measuring the most daily events recorded since the eruption began. 376 events were recorded, with most being intermediate (10-15 km depth) events although some deep (30-45 km depth) events were recorded, including the day’s largest earthquake which was a mbLg 4.8 event at 37 km depth.
Volcanic tremor is low, whilst deformation now remains stable across the whole network except for some possible deformation signals at the station nearest the volcano, but these also show signs of meteorological origin. SO2 emissions were measured at a ‘high’ level (1,000-29,999 tons per day), and the ash and gas plume height was 2,600 m. As a general trend however, satellite measurements imply current SO2 emissions are lower than the start of the eruption. Air quality with respect to SO2 reached unfavourable levels in Los Llanos and regular levels in Tazacorte and Puntagorda, but none exceeded the daily limit threshold (125 μg/m3). All other stations retained good or reasonably good values with respect to SO2 levels. PM10 levels were better, with good or reasonably good levels in all stations throughout the day.
(Above) Strombolian activity from the vent on the eastern flank of the main cone on the 30th, during a period of limited activity from the vents within the main cone. Video credit: INVOLCAN
Sources: Government of the Canary Islands, PEVOLCA, Involcan, IGN, DSN, Cabildo La Palma, 112 Canarias, Tolouse VAAC, Copernicus EMS
Official social media
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- EuroNews – La Palma: Authorities urge people to wear masks due to toxic gas – here
- Spanish News – The Canarian words popularized by the La Palma Volcano – here
- El País – Advancing lava poses a new threat – here
- Canary Islands Government – Damage asessment for fruit and veg – here
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Interactive Lava Flow Map
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Interactive Earthquake Map
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