27 Dec Elevation increase recorded yesterday has reversed
Elevation increase recorded yesterday has reversed
Red traffic light
Rapid increase in phreatomagmatic activity
Since the last statement, 42 earthquakes have been located in the area. 6 of these earthquakes have been felt by the population. The largest earthquake occurred at 20:40 (UTC) yesterday, with a magnitude of 4.5 mbLg at 36 km depth and felt with intensity IV on the island of La Palma. In the period considered, 1 earthquake has been located at a depth of around 30 km, the rest of the hypocenters of the period are located at a shallower depth, around 12 km. The amplitude of the volcanic tremor signal has high mean levels, with intensifying pulses. The island’s network of permanent GNSS stations shows that the elevation recorded on days 4 and 5 at station LP03, which is the closest to the eruptive centres, has completely reversed. However, the southwestern deformation recorded by the station is still ongoing. Yesterday, at 10:30 UTC, due to the decrease in height of the eruptive column, IGN issued a new VONA (Volcano Observatory Notice for Aviation) informing that the maximum height of the eruptive column as 2,700 m. above sea level. Using a calibrated image IGN estimates a column height of 2,700 m at 08:45 UTC today with a west-southwest direction (IGN, 2021). Lava fountaining was observed at the main cone (GVP, 2021).