Volcanic activity worldwide 27 Jan 2022: Reventador volcano, Nyiragongo, Sangay, Nevados de Chillán...

Suwanose-jima (Ryukyu Islands): (27 Jan) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA AT 20220127/0040Z 15NM SW OF ALTAI FL200 REPORTED

Davidof (United States, Aleutian Islands): (27 Jan) A swarm of earthquakes occurred at the volcano over the past two days.
The largest quake with a magnitude 4.9 was recorded at 16:02 local time yesterday. The swarm might be related as a response to a volcanic unrest or regional tectonic activity. No signs of unrest have been observed in recent satellite images of the volcano.
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The Alaska Volcano Observatory raised the alert level for the volcano to "yellow".
A similar swarm occurred in December last year.


Nevado del Ruiz (Colombia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 .
The full report is as follows: VA EMS RPRTD IN VONA AND SEEN IN SAT. to 22000 ft (6700 m)

Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 .
The full report is as follows: CONS VA EMS to 20000 ft (6100 m)

Reventador (Ecuador): (26 Jan) 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: POSS OCL VA EMS to 15000 ft (4600 m)

Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: continuous ash emissions

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 and is moving at 05 kts in W direction.
The full report is as follows: INTEMITTENT EMISSION to 14000 ft (4300 m)

Nyiragongo (DRCongo): (27 Jan) The MOUNTS volcano monitoring system detected sulfur dioxide (SO2) emissions at the volcano that reached to a 307,60 tonnes/day on 24 January.