Etna volcano - eruption update

Actualizado: 28 nov. 2021 13:58 GMT -

Weak explosions reported from Northeast crater

Update Sat 20 Nov 2021 17:49
Steam plumes rising from Etna's Bocca Nuova summit crater (image: INGV Catania webcam)
Steam plumes rising from Etna's Bocca Nuova summit crater (image: INGV Catania webcam)
In the past weeks, Etna has been more or less calm. Today, small intermittent explosions resumed at the North-East crater, the volcano observatory in Catania (INGV) reported.
According to a report, these explosions began at 11.16 a.m. local time and have been producing small ash plumes that dispersed quickly in the area of the summit craters. Volcanic tremor shows no significant variations and remains at low to medium levels.
Apart from this, the Bocca Nuova seems to be the most active crater at the moment, producing dense steam plumes with some pulsating activity as can be seen in the image attached.

Occasional ash emissions from SE crater

Update Thu 28 Oct 2021 18:49
Ash emission from Etna's SE crater (image: Boris Behncke / facebook)
Ash emission from Etna's SE crater (image: Boris Behncke / facebook)
Current tremor signal at Etna's ECPN station (image: INGV Catania)
Current tremor signal at Etna's ECPN station (image: INGV Catania)
After last Saturday's paroxysm, the volcano has not remained completely calm, but produces ash emissions from the New SE crater from time to time.
Volcanic tremor is at low to moderate levels, something that can change any time.

Etna volcano (Italy): violent eruptive episode, parts of SE crater collapse into dangerous pyroclastic flows

sáb, 23 oct 2021, 10:52
10:52 AM | POR: T
Etna volcano near the end of this morning's paroxysm (image: Montagnola webcam of INGV Catania)
Etna volcano near the end of this morning's paroxysm (image: Montagnola webcam of INGV Catania)
Current tremor signal showing the peak of this morning's paroxysm (image: INGV Catania)
Current tremor signal showing the peak of this morning's paroxysm (image: INGV Catania)
A strong paroxysm is in progress at the volcano. As suspected already last night by the presence of intermittent strombolian activity and the slowly rising tremor, this activity continued to evolve gradually throughout the night and early this morning.
Tremor reached high levels at 7.40 a.m., followed by a strong increase of explosive activity at the SE crater from 10.15 a.m.
Lava fountaining was observed to have started at around that time, and lasted until 12.20 p.m. It generated a dense ash plume that rose several kilometers and drifted east, producing ash falls in the area of Piedimonte and Linguaglossa.

The eruption was characterized by several collapse events on the eastern sides of the crater, which generated pyroclastic flows - hot turbulent avalanches of loose lava material, and extremely fast-moving and dangerous as everything in their path is being destroyed.
The first was observed at 10.49 a.m., when parts of the eastern crater wall broke into an avalanche heading towards the Valle del Bove and traveling about 1.5 km distance. Additional pyroclastic flows with similar mechanism took place at 11.02, 11.30 and/or 11.37, and 11.58 a.m.
A lava flow was erupted from the breached SE crater heading towards the east into the Valle del Bove as well.

Watch the eruption filmed by LocalTeam:


Volcanic tremor slowly rising

Update Fri 22 Oct 2021 16:09
Current tremor signal at Etna's ECPN station (image: INGV Catania)
Current tremor signal at Etna's ECPN station (image: INGV Catania)
In tandem with the reported increase of activity in form of strombolian explosions at the SE crater, volcanic tremor has been gradually rising.
Whether this is a first sign the volcano is heading towards another fire-fountaining episode, known as paroxysm, as it did more than 50 times this year alone so far, will be likely seen in the near future (hours to few days from now).

Etna volcano (Italy): resumption of strombolian activity after month

vie, 22 oct 2021, 07:14
07:14 AM | POR: MARTIN
Strombolian activity at Etna volcano this morning as seen from Tremestieri (image: Boris Behncke)
Strombolian activity at Etna volcano this morning as seen from Tremestieri (image: Boris Behncke)
Ash emissions at Etna volcano today (image: Boris Behncke)
Ash emissions at Etna volcano today (image: Boris Behncke)
After one month since the latest paroxysm episode, strombolian activity has picked up again at 02:47 local time yesterday.
Small strombolian explosions started to erupt from the Southeast Crater, which became gradually stronger on 21 October at 17:20 local time and are still continuing at the time of this update.
Sporadic ash emissions are accompanied by small glowing steam and gas plumes dispersing towards the E and SW.
The average amplitude of volcanic tremor varies between low-to-medium levels located at altitude between 2900 m and 3000 m.
Source: National Institute of Geophysics and Volcanology volcano activity update 21 October 2021

Volcano remains restless

Update Fri 22 Oct 2021 07:02
False-color satellite image of Etna volcano on 21 Oct 2021, emphasizing thermal anomalies in the summit craters (image: Sentinel Hub)
False-color satellite image of Etna volcano on 21 Oct 2021, emphasizing thermal anomalies in the summit craters (image: Sentinel Hub)
The volcano has remained more or less calm, but it is only a matter of time when activity will pick up again.
The summit craters continue to show marked thermal anomalies at the New SE crater, Voragine and Bocca Nuova complex as well as the NE crater. All of these emit gas and steam plumes and instruments detect frequent small acoustitc signals from dee-seated explosions, likely strombolian in type.
The volcanological institute of the University of Florence (LGS) reported more than 6000 infrasonic (explosion-related) events during 24 hours, with maximum pressures of up to 3.21 Pa. Volcanic tremor remains low, but as often in the past, it can change very quickly.
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