Hunga Tonga-Hunga Ha’apai (Tonga, Tonga Islands): (20 Jan) A third pass of the atmospheric pressure wave around the globe was recorded by the Icelandic Meteorological Office (IMO).
An attached pressure diagram depicts 6 pressure peaks rather than 3 because the wave arrives twice, both from N-NW and from S-SE with 10-hours delay between the peaks as informed Dr. Evgenia Ilyinskaya, the researcher of Leeds University.
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 and is moving at 5 kts in S direction.
The full report is as follows: CONT NEW EMS OBS to 15000 ft (4600 m)
Nevado del Ruiz (Colombia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 19000 ft (5800 m) altitude or flight level 190 .
The full report is as follows: NEW VA EMS to 19000 ft (5800 m)
Sangay (Ecuador): 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: CONT VA EMS to 22000 ft (6700 m)
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: POSS VA CLDS to 15000 ft (4600 m)
Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: UNABLE TO DETECT
Ubinas (Peru): (20 Jan) The Instituto Geofísico del Perú alerted about a possible collapse of the southeastern flank at the volcano.
The reason for this alert is the possible destabilization of the 1.2 and 1.4 km high crater walls.
… [read more]
Nevados de Chillán (Central Chile): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: NO VA EMISSION
