Campi Flegrei (Phlegrean Fields) (Italy): (17 Oct) Another sequence of a seismic swarm has been occurring beneath the Campi Flegrei caldera since yesterday.
At 12:36 local time, the INGV seismic recordings started to detect the new seismic crisis. Eight small earthquakes have been monitored with a maximum magnitude of M 3.6 ± 0.3.
Source: Istituto Nazionale di Geofisica e Vulcanologia volcano activity update 17 October 2023
Bezymianny (Central Kamchatka Depression): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 17000 ft (5200 m) altitude or flight level 170 and is moving at 30 kts in NE direction.
The full report is as follows: VA AT 20231017/1230Z FL170 EXTD NE OBS VA DTG:17/1230Z to 17000 ft (5200 m)
…17 Oct:
The extrusive activity at the volcano has been picking up last night.
The local volcano observatory (KVERT) announced that block-and-ash flows raced over the eastern slope of the lava dome between 19:00 and 20:30 UTC. Resulted ash plumes – phoenix clouds – separated from pyroclastic flows and rose up to 3,5 km in height. At the time of the update, ash emissions have extended about 15 km to the northeast of the volcano.
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Sakurajima (Kyushu, Japan): (17 Oct) The volcano has shown relatively dramatic activity over the past few days.
A powerful explosion took place from the volcano’s Minamidake summit crater yesterday morning, generating a billowing dense grey ash plume that reached up to 12,000 ft (3,700 m) altitude and drifted southeast.
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Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20231017/1735Z FL060 EXTD S OBS VA DTG:17/1740Z
Ibu (Halmahera, Indonesia): (17 Oct) 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 05 kts in SW direction.
The full report is as follows: VA TO FL080 AT 16/2340Z, EXT SW EST VA DTG:16/2340Z to 8000 ft (2400 m)
Semeru (East Java, Indonesia): (16 Oct) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .
The full report is as follows: VA TO FL140 OBS AT 16/2225Z EST VA DTG:16/2225Z to 14000 ft (4300 m)
Dukono (Halmahera): (17 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 and is moving at 05 kts in SW direction.
The full report is as follows: VA TO FL070 AT 17/0040Z, EXT SW EST VA DTG:17/0040Z to 7000 ft (2100 m)
Home Reef (Tonga Islands): (17 Oct) Volcanic Ash Advisory Center Wellington (VAAC) issued the following report: PREDOMINANTLY STEAM ERUPTION EST VA DTG:17/0155Z
Popocatépetl (Central Mexico): 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 and is moving at 5 kts in SW direction.
The full report is as follows: ONGOING VA EMS 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 22000 ft (6700 m) altitude or flight level 220 and is moving at 10 kts in NW direction.
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 EMS to 15000 ft (4600 m)
Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: ONLY STEAM AND GASES
Villarrica (Central Chile): (17 Oct) The explosive activity at the volcano remains essentially unchanged since the last update.
Vigorous eruptive episodes (likely to be classified as paroxysm) have continued from the summit vent over the past 24 hours. Dome-shaped fountains were reaching heights of 80-100 meters above the crater in the night of 15 October. Some of plastic incandescent lava clots landed off the crater terrace. A vivid gas-steam plume containing some amount of ash accompanied the eruption.
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