Grímsvötn (Iceland): (12 Jan) The Icelandic Meteorological Office (IMO) raised the alert level of the volcano to yellow, as chances that it might erupt have increased following a strong earthquake yesterday.
At about 06:53 local time, a magnitude 4.3 earthquake hit the area of the glacier-covered volcano. The quake is by far the strongest event since the beginning of seismic measurements at the volcano (1991). Over the past few days, a water level started to increase in Gígjukvísl river, which culminated in developing dangerous jökulhlaup (literally „glacial run“), thought to be triggered highly likely by the earthquake. Jökulhlaup is an Icelandic term for glacier outburst – once enough water has accumulated beneath the rims of the glacier, it can lift it and surge out, and/or melt and erode itself a channel through its bottom, to exit in a massive, violent glacial flood. The last glacier run-offs from the volcano within the past two years occurred in October 2022 and November-December 2021.
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Ebeko (Paramushir Island): (12 Jan) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20240112/0231Z FL170 EXTD NE REPORTED OBS VA DTG:12/0240Z
Suwanose-jima (Ryukyu Islands): (12 Jan) A new heat anomaly has been identified in the latest thermal satellite image of the volcano.
The glow in the crater might suggest that the volcano has been entering into a new eruptive sequence. Southerly dissipating dense ash emissions and mainly incandescence in the inner crater indicate an arrival of a new magma flux towards the surface.
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Ibu (Halmahera, Indonesia): (12 Jan) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 5000 ft (1500 m) altitude or flight level 050 .
The full report is as follows: VA TO FL050 MOV SSW REPORTED AT 12/0044Z OBS VA DTG:12/0100Z to 5000 ft (1500 m)
Lewotobi (Flores): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: GROUND REPORT OBS VA TO FL080 AT 12/1000-1600Z
Semeru (East Java, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VONA AT 12/0539Z OBS VA TO FL140 MOV SW EST VA DTG:12/1450Z
Marapi (Western Sumatra, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 17000 ft (5200 m) altitude or flight level 170 and is moving at 10 kts in W direction.
The full report is as follows: VA TO FL170 OBS FM GRD AT 12/1117Z EST VA DTG:12/1800Z to 17000 ft (5200 m)
Dukono (Halmahera): (12 Jan) 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 S OBS AT 11/0730Z OBS VA DTG:12/0730Z to 7000 ft (2100 m)
Popocatépetl (Central Mexico): 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 .
The full report is as follows: POSS VA EMS to 18000 ft (5500 m)
Santiaguito (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: NEW VA EM OBSD to 15000 ft (4600 m)
Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 16000 ft (4900 m) altitude or flight level 160 .
The full report is as follows: FREQUENT VA EMS to 16000 ft (4900 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 20000 ft (6100 m) altitude or flight level 200 .
The full report is as follows: VONA RPTS VA EM 12/1000Z to 20000 ft (6100 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: VA EM OBS AND RPTD. to 20000 ft (6100 m)
Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA NOT OBS.
Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: INTERMITTENT EMISSION
Volcano Activity Summary for 12 Jan 2024:
