Volcanic activity worldwide 1 Nov 2023: Klyuchevskoy volcano, Popocatépetl, Semeru, Dukono, Reykjan…

Map of today’s active volcanoes

Fagradalsfjall (Reykjanes Peninsula, Iceland): (1 Nov) A new phase of seismic swarm commenced at Þorbjörn at 08:40 yesterday morning.
The abnormally intense seismic crisis lasted nearly two hours occurring at depths between 5 and 1.5 km. The strongest earthquake was recorded with a magnitude of M 3.7.
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The swarm might be related to a response of magma movements beneath the surface at shallow levels.
The IMO is monitoring developments closely and is looking to see if micro-seismic activity increases closer to the surface, which could be a sign that magma is breaking its way through the earth´s crust.

Reykjanes (Reykjanes peninsula (SW Iceland)): (1 Nov) A new phase of seismic swarm commenced at Þorbjörn at 08:40 yesterday morning.
The abnormally intense seismic crisis lasted nearly two hours occurring at depths between 5 and 1.5 km. The strongest earthquake was recorded with a magnitude of M 3.7.
… [read more] … [show less]
The swarm might be related to a response of magma movements beneath the surface at shallow levels.
The IMO is monitoring developments closely and is looking to see if micro-seismic activity increases closer to the surface, which could be a sign that magma is breaking its way through the earth´s crust.

Klyuchevskoy (Kamchatka): The activity at the volcano has been accelerating throughout most of today.
As we reported in the latest post this morning, the explosive eruption at the summit vent has been picking up and culminated into a powerful vulcanian-sized ash column. Abundant grey constant emissions of very fine ash rose up to estimated 14 km (46,000 ft).
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Several spectacular images and aerial videos of the activity have been circling in social media today, depicting a spectacular billowing grey-to-black ash column that has already been dissipating 1600 km to the south-southeast of the volcano at the time of this update.
The most recent satellite imagery of the strong eruptive activity, acquired by Landsat 8-9, revealed multiple active lava flows descending over the northwestern and southwestern Kozyrevsky channel. The third lava flow, advancing along the Apakhonchich chute, is being obscured by ash clouds in the image for now, but from recent observations, it continues to be active.

…1 Nov:
The volcano has been showing dramatic activity over the past hours.
The explosive eruption at the summit vent has been picking up and culminated into a powerful vulcanian-sized ash column. Abundant grey constant emissions of very fine ash rose up to estimated 14 km (46,000 ft). The ash plume has been traveling along vast stretches about 1500 km to the south-southeast of the volcano at the time of this update.
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The Aviation Color Code for the volcano was raised to „RED“ yesterday as increasing ash emissions present a danger to aviation, and precautions with air traffic must be taken.
The ongoing effusive-explosive eruption of the volcano (report from 30 October)

Ebeko (Paramushir Island): (31 Oct) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20231031/2240Z FL090 EXTD E REPORTED OBS VA DTG:31/2250Z

Sakurajima (Kyushu, Japan): (1 Nov) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 and is moving at 15 kts in SE direction.
The full report is as follows: ERUPTED AT 20231031/2243Z FL080 EXTD SE OBS VA DTG:31/2330Z to 8000 ft (2400 m)

Mayon (Luzon Island, Philippines): (1 Nov) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20231101/0813Z FL090 EXTD NE REPORTED OBS VA DTG:01/0810Z

Lewotolo (Lesser Sunda Islands): (1 Nov) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: DISCRETE VA REPORTED TO FL060 AT 01/0600Z OBS VA DTG:01/0620Z

Semeru (East Java, Indonesia): 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 MOV W, LAST VONA OBS VA AT 01/0749Z to 14000 ft (4300 m)

Dukono (Halmahera): 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: CONTINUOUS VA OBS TO FL070 MOV SW OBS VA DTG:01/1650Z to 7000 ft (2100 m)

Shishaldin (Aleutian Islands, Alaska): (1 Nov) The activity at the volcano has declined over the past few weeks.
The seismic activity consists of the continuing low-level tremor and small low-frequency earthquakes. No large ash emissions have occurred at the volcano since 3 October.
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Recent satellite observations affirmed a decrease in surface temperatures and SO2 emissions.
Therefore, the Alaska Volcano Observatory (AVO) decreased the Aviation Color Code to Yellow.

Popocatépetl (Central Mexico): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 24000 ft (7300 m) altitude or flight level 240 .
The full report is as follows: LRG VA EMS to 24000 ft (7300 m)

Sangay (Ecuador): 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: VA EMS OBS to 19000 ft (5800 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: VA EMS OBS to 15000 ft (4600 m)

Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 25000 ft (7600 m) altitude or flight level 250 and is moving at 5 kts in E direction.
The full report is as follows: continuous ash emissions to 25000 ft (7600 m)

Volcano Activity Summary for 1 Nov 2023:

The new sequence of the seismic swarm on the Reykjanes peninsula as seen in time and depth plot(image: VolcanoDiscovery)