Volcanic activity worldwide 12 Dec 2021: Fuego volcano, Semeru, Reventador, Sangay, La Palma, Nevado…

Map of today’s active volcanoes

La Palma (Canary Islands (Spain)): Around noon local time, a sudden large explosion occurred at the main crater of the cone, producing a steam and ash plume that quickly rose to estimated 5,000-6,000 meters altitude.
The event was likely a so-called vulcanian explosion, typically caused when a larger plug in the upper conduit has formed and is suddenly thrown out when gas pressure underneath overcomes a threshold (comparable to a cannon-shot mechanism).
… [read more] … [show less]
Today’s explosion likely might be due to the fact that the conduits have gradually been closing up / filling with debris in their upper parts as supply of rising material is less abundant. This fits with the model that the eruption has entered its final waning stage, but also creates highly dangerous conditions, because such explosions could (and likely will) repeat in the days to come.

Intensa columna de ceniza a las 12.00 hora canaria. Vídeo registrado desde el embalse Dos Pinos / Intense column of ash at 12.00 pm Canarian time. Video recorded from Dos Pinos dam pic.twitter.com/wsaoObxEGt

— INVOLCAN (@involcan) December 12, 2021

Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA IS NOT IDENTIFIABLE IN SATELLITE IMAGERY.

Semeru (East Java, Indonesia): (12 Dec) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin 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 TO FL140, EXT N AT 12/0030Z OBS VA DTG:12/0030Z to 14000 ft (4300 m)

Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: LGT VA EMS CONTG to 15000 ft (4600 m)

Sangay (Ecuador): (12 Dec) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA NOT OBS IN SAT.

Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: PSBL CONTG VA EMS. to 15000 ft (4600 m)

Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: UNABLE TO DETECT

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 12000 ft (3700 m) altitude or flight level 120 and is moving at 30 kts in E direction.
The full report is as follows: SPORADIC EMISSIONS to 12000 ft (3700 m)

Volcano Activity Summary for 12 Dec 2021:

Eruption plume from today’s vulcanian-type explosion at La Palma (image GEVolcan / facebook)