Stromboli (Eolian Islands, Italy): The lava flow has decreased significantly in intensity during last night, but according to the volcano observatory still remained weakly active today. Judging from webcam imagery, however, it appears it might more or less have stopped by this evening.
No other significant changes in the activity at the summit craters – spattering and intermittent explosions from several vents – have been reported.
…25 May:
The effusive-explosive eruption of the volcano continues and remains essentially unchanged at moderate levels.
The lava, keeping the flow active, continues to effuse from the NE crater onto the Sciara del Fuoco and slowly reaching about 400-500 m elevation, i.e. half way down to the sea.
… [read more]
Etna (Sicily, Italy): Starting from 17:30 local time, volcanic tremor once again started to rise sharply and from around 18:20, intense strombolian activity started at the New SE crater, producing dense ash plumes that rose a few 100 meters and drifted into easterly directions.
This activity seems to be still increasing and if continues might well lead up to yet another paroxysm, this time less than 24 hours since the previous one!
…25 May:
Like clockwork, approx. 48 hours after the previous one, Etna produced a 4th paroxysm in a row with near-identical time intervals from the New SE crater last night. It marked the 25th lava-fountaining episode during 2021.
The eruption followed very much the style observed during the previous lava-fountaining episodes: first, from 20:58 local time, strombolian activity resumed at the New SE crater while volcanic tremor began again to rise and its source moved to the area of underneath the New SE crater.
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Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20210525/1027Z FL050 EXTD SE OBS VA DTG:25/1020Z
Lewotolo (Lesser Sunda Islands): (24 May) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 .
The full report is as follows: VA TO FL070 MOV SW OBS VA DTG:24/2250Z to 7000 ft (2100 m)
Krakatau (Sunda Strait, Indonesia): (25 May) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 6000 ft (1800 m) altitude or flight level 060 .
The full report is as follows: VA TO FL060 MOV SW OBS VA DTG:25/0150Z to 6000 ft (1800 m)
Dukono (Halmahera): (24 May) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 .
The full report is as follows: VA TO FL080 MOV NE OBS VA DTG:24/2230Z to 8000 ft (2400 m)
Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .
The full report is as follows: VA EMS SEEN IN SAT. to 14000 ft (4300 m)
Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 18000 ft (5500 m) altitude or flight level 180 and is moving at 5 kts in SE direction.
The full report is as follows: VA CLDS CONT OBS IN STLT IMAGERY to 18000 ft (5500 m)
Reventador (Ecuador): (25 May) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA NOT OBS
Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 26000 ft (7900 m) altitude or flight level 260 .
The full report is as follows: INTERMITTENT EMISSIONS to 26000 ft (7900 m)
Nevados de Chillán (Central Chile): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .
The full report is as follows: INTERMITTENT EMISSIONS to 14000 ft (4300 m)
Soufrière St. Vincent (West Indies, St. Vincent): After little more than one month since the last eruption on 22 April, the volcano continues at seismic unrest.
A volcanologist Dr. Adam Stinton from the Belmont observatory noted: „Since the morning of Friday 21st, there have been a handful of earthquakes, just around 20-25. None of the earthquakes are large enough to be felt at the moment; the average per day is about 10-15 since the last explosion on April 22nd“.
… [read more]
Nyiragongo (DRCongo): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Toulouse warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 and is moving at 10 kts in S direction.
The full report is as follows: ERUPTION AT 20210522/1630Z ERUPTION STILL IN PROGRESS to 20000 ft (6100 m)
…25 May:
An amazing and first ultra-high resolution satellite image after the eruption shows visible changes at the summit crater.
— Raphael Grandin (@RaphaelGrandin) May 25, 2021
…25 May:
The seismic activity of the volcano quickly intensified after the eruption and continues at elevated levels although lava flows have stopped.
The seismic network detected continuous volcanic tremor between midnight and 04:00 local time today indicating magma moving upwards through the volcanic conduits. This may be typical sign for an upcoming eruption.
… [read more]
…25 May:
Sadly, the death toll from the recent eruption rose to at least 20, after 5 people were found choked to death from toxic fumes when they attempted to cross one of the recent and barely cooled down lava flows that had cut through their neighborhood in an area 13 km north of Goma.
What gas exactly caused their death was not mentioned, but one speculation is it could odorless carbon dioxide trapped in depressions on the surface of the flow – the slopes of Nyiragongo are infamous for many fissures and ground vents emanating accumulating sometimes deadly concentrations of the highly toxic gas.
… [read more]
