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La Palma eruption update 30th october 2021: Lava flows affect new land to the south of the flow field

By Geotenerife 1 year ago
Home  /  VolcanoStories  /  La Palma  /  Day by Day  /  La Palma eruption update 30th october 2021: Lava flows affect new land to the south of the flow field
 By Geotenerife  30th Oct 2021

La Palma eruption update 30th october 2021: Lava flows affect new land to the south of the flow field

Daily summary

The lava emission centre on the northwest flank of the main cone continues to feed a branched stream, with one branched travelling west, and another travelling southwest. The most fluid of these flows is the latter, which has exceeded fronts of the original flows and has advanced 1,500 m in the last 24 hours over new land at the southern extent of the lava flow field and has reached the low coastal plain near Las Hoyas. The width of the lava flows has now exceeded 3,000 m because of the advance of this flow, and the total area affected by the lava flows now stands at 964 hectares. Earthquakes continued to be observed at high magnitudes at intermediate depths (10-15 km) with some large earthquakes at deeper depths (35-40 km), although at a lower frequency than previous days. 105 events were recorded, peaking at 5.0 mbLg at 37 km depth, which was the most powerful earthquake since the eruption began.

Deformation remains stable in the proximal GPS stations after the reversal of the signal seen at the Jedey station the last few days, whilst a slight deflation of deep origin continues to be recorded in distal stations. SO2 emissions continue to show the slight decreasing trend of the last 6 days and were measured at 7,700 tons per day, whilst the ash and gas plume reached 4000 m. The tremor remains high, with pulses of intensification. Air quality remained improved as seen in the last three 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 again exceeded the daily threshold (50 μg/m3) for PM10 concentrations, with spikes of concentrations up to 499 μg/m3 at midnight.

The outlines of lava flows on a satellite image of the coastline showing new areas that have been affected by lava flows in the last day

A map of the lava flows in the southwest corner of the flow field by the coast, showing the advance over new land in the last day. Image credit: PEVOLCA, Government of the Canary Islands

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 – La Palma volcano survivors shaken but determined – here
  • Reuters – Tourists head to the volcano – 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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