Sakurajima (Kyushu, Japan): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 10000 ft (3000 m) altitude or flight level 100 and is moving at 5 kts in NE direction.
The full report is as follows: EXPLODED AT 20250122/1346Z FL100 EXTD E OBS VA DTG:22/1410Z to 10000 ft (3000 m)
Suwanose-jima (Ryukyu Islands): (22 Jan) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20250122/0317Z OVER FL060 EXTD SW OBS VA DTG:22/0310Z
Ibu (Halmahera, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA ERUPTION REPORTED AT 22/1311Z EST VA DTG:22/1640Z
Lewotobi (Flores): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA ERUPTION LAST REPORTED AT 22/1749Z EST VA DTG:22/1840Z
Lewotolo (Lesser Sunda Islands): (22 Jan) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA REPORTED FM GND AT 21/2247Z MOV E OBS VA DTG:22/0450Z
Semeru (East Java, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA ERUPTION REPORTED AT 22/1721Z EST VA DTG:22/1910Z
Marapi (Western Sumatra, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA REPORTED AT 22/1229Z EST VA DTG:22/1240Z
Dukono (Halmahera): 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 and is moving at 10 kts in W direction.
The full report is as follows: CONTINUOUS VA TO FL080 OBS AT 22/1140Z EXTD W to 8000 ft (2400 m)
Loihi (United States, Hawaiian Islands): (22 Jan) The Kamaʻehuakanaloa volcano (formerly known as Lōʻihi Seamount), located offshore to the southeast of the Island of Hawaiʻi, experienced a period of increased seismic activity beginning around 02:00 local time on 21 January. The seismicity ended by 08:00 local time, and further earthquake swarm activity currently appears unlikely. A total of 16 earthquakes were recorded during the swarm, all with magnitudes of 0 or smaller, occurring at depths between 8 and 20 miles below sea level. The USGS has not received any reports from the Island of Hawaiʻi indicating these events were felt.
The Hawaiian Volcano Observatory continues: „Elevated seismicity at Kamaʻehuakanaloa did not impact other volcanoes or any infrastructure on the Island of Hawaiʻi. The source of the earthquakes is difficult to determine at this time, but it may be related to the movement of magma beneath Kamaʻehuakanaloa. Prior swarms related to probable eruptions at the volcano have consisted of thousands of earthquakes over days to weeks. Eruptive activity at this volcano would have no impact on residents of the Island of Hawaiʻi. „
Source: Hawaiian Volcano Observatory volcano activity update 22 January 2025
Popocatépetl (Central Mexico): 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: FRQT VA EMS to 20000 ft (6100 m)
Santiaguito (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 13000 ft (4000 m) altitude or flight level 130 and is moving at 20 kts in W direction.
The full report is as follows: VA MVG W AND SW to 13000 ft (4000 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 26000 ft (7900 m) altitude or flight level 260 .
The full report is as follows: NEW VA EMS to 26000 ft (7900 m)
Puracé (Colombia): Monday 20 Jan 2025, the Colombian Geological Service (SGC) raised the official alert level of Puracé, because minor ash emissions had started from the volcano’s summit crater. This followed the detection of volcanic tremor that had started late Sunday (January, 19, 2025) at 11.06 pm local time.
Volcanic tremor is associated with an increase in internal pressure of fluids (magma, water solutions, gasses) inside the volcano, and is often caused by new magma moving into shallower levels, i.e. a precursor to volcanic eruptions. The ash plumes dispersed towards the southwest. Reports of ash fall have been received from the inhabitants of the towns of Puracé and Coconuco, in which they also state that they perceive sulfur odors.
Other monitoring techniques have not shown significant variations in the measured parameters and after the mentioned ash emissions, the volcano’s activity levelsreturned to the levels prior to the increase in seismic activity.
Volcano Activity Summary for 22 Jan 2025:
