Largest magnitude earthquake of the eruption so far is recorded

Largest magnitude earthquake of the eruption so far is recorded

Earthquake number drops but magnitude remains >4 mbLg

Group: Geological report
Subgroup: SEIS – VOLTREM – VOLTREMPULS – PLUME – SUB – EQPOP
Source: Noticias e informe mensual de vigilancia

Since the last communication, 71 earthquakes have been located in the area, and 7 of these earthquakes have been felt by the population. The largest quake occurred at 21:48 UTC on the 19th, with magnitude 4.8 mbLgat a depth of 39 km. This quake was widely felt throughout the island of La Palma and in some populations on the islands of La Gomera and Tenerife with intensities II and II-III. In the period considered, a total of 5 earthquakes have been located at depths around 30 km, the rest of the hypocenters of the period are located at a shallower depth, around 12 km. The volcanic tremor signal maintains a high mean amplitude, with intensifying pulses. The height of the scattering cloud measured at 08:00 UTC is estimated to be 3,500 m. The GNSS stations located further from the eruptive centres recorded a slight deflation, possibly related to the deep seismicity.

This video taken on the 20th of October shows a lava flow inundating La Laguna. IGME scientists take temperature measurements. Sourced from IGME (2021).

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