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La Palma eruption update 29th october 2021: Earthquakes remain at high magnitude and frequency

By Geotenerife 1 year ago
Home  /  VolcanoStories  /  La Palma  /  Day by Day  /  La Palma eruption update 29th october 2021: Earthquakes remain at high magnitude and frequency
 By Geotenerife  29th Oct 2021

La Palma eruption update 29th october 2021: Earthquakes remain at high magnitude and frequency

Daily summary

To counter potential road disruption from the influx of tourists the weekend for All Saints’ Day on the 1st November, the authorities have launched a shuttle bus service from Breña Baja on the east of the island to the area of the eruption for tourists. People using private vehicles must not use the LP-3 road, to keep it free for emergency services, residents, public transport and military vehicles. The volcano remains in the same behaviour pattern in the last few days with high lava effusion rates from the NW flank of the main cone, which has shown some stability as well over the last couple of days. At noon however, there was a more intense period of ash emissions and audible explosions for several hours, which could be caused by intense degassing according to PEVOLCA. The most active lava flow, to the south of the original flows, has advanced 900 m in the last 24 hours over new ground. At the current rate, it could threaten the road that connects Puerto Naos to towns further south of the lava flows. Earthquakes remain at a high magnitude and frequency at intermediate (10-15 km) depths. 185 events were recorded, peaking at mbLg 3.7.

No significant deformation is now seen in the proximal stations after the reversal of the signal seen at the Jedey station the last couple of days, whilst a slight deflation of deep origin continues to be recorded in distal stations. SO2 emissions remained slightly lower although due to technical issues an exact value could not be determined, whilst the ash and gas plume reached, 3300 m. The tremor remains high, with pulses of intensification. Air quality remained improved relative to previous days. The daily and hourly thresholds were not exceeded in any of the stations with respect to both SO2 and PM10 concentrations, except in Los Llanos, which exceeded the daily threshold (50 μg/m3) for PM10 concentrations.

A map of La Palma indicating the location, depth, time and magnitude of recent earthquakes, that remain concentrated in the south of the island

A map of the earthquakes in the three days between the 27th and 29th October. The high number of earthquakes and the clustering of events largely at shallower depths (10-15 km) can be seen. Image credit: IGN Spain

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

  • BBC News – Viral lava bomb video – here
  • Guide to Canary Islands – Buses taking tourists to see the eruption – 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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