Krasheninnikov (Kamchatka, Russia): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA IS NOT IDENTIFIABLE IN SATELLITE IMAGERY.
Klyuchevskoy (Kamchatka): (21 Oct) On 14 October at dusk, a strong glow was observed at the summit of the volcano.
Likely strombolian activity took place atop the edifice that continued until 16 October with a decreasing trend. The activity was associated with a strong degassing reaching about 800 meters above the crater.
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Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20251021/2041Z FL070 STNR OBS VA DTG:21/2040Z
Canlaon (Central Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20251021/1903Z VA CLD UNKNOWN REPORTED OBS VA DTG:21/1920Z
Ibu (Halmahera, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA REPORTED TO FL060 AT 21/1056Z EST VA DTG:21/1130Z
Semeru (East Java, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA REPORTED TO FL130 AT 21/1444Z EST VA DTG:21/1530Z
Dukono (Halmahera): (20 Oct) 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 OBS AT 20/2230Z MOV E OBS VA DTG:20/2230Z to 7000 ft (2100 m)
Popocatépetl (Central Mexico): Volcanic Ash Advisory Center Washington (VAAC) issued the following report:
Fuego (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: SML VA EMS
Nevado del Ruiz (Colombia): (21 Oct) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NEW VA EMS
Sangay (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PSBL VA EMS
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 and is moving at 10 kts in NW direction.
The full report is as follows: CONT LGT VA EMS PSBL to 15000 ft (4600 m)