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.

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