Stromboli (Eolian Islands, Italy): (7 Oct) The National Institute of Geophysics and Volcanology, Etneo Observatory (INGV) reported that a sudden, powerful explosion occurred at 14:18 local time yesterday from the NE crater.
The height of an ash plume is unknown and was not reported yet as visibility was partially limited due to dense clouds, but from the observatory’s bulletin it dissipated towards the NE direction.
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La Palma (Canary Islands (Spain)): Ash from the eruption has again reached the airport, forcing it to close. This situation is likely to continue until Saturday…
…7 Oct:
The largest-so-far earthquake occurred an hour ago under the eastern flank at 35 km depth. Its magnitude was measured at 4.3 according to IGN and it was felt on most of the island.
What the increase in quakes and their location in the upper mantle mean in relationship with the eruption is difficult to say, but likely will become more evident in the future, along with more data such as overall seismicity and ground deformation in particular.
One scenario is that they reflect deep magma intrusions, which could further rise and aliment the shallower magma plumbing system currently feeding the eruption.
…7 Oct:
The eruption continues in a similar way as during the previous days. Lava fountaining with strong ash emissions as well as lava flows occurs from 3 main vents aligned in the crater, and tremor intensity has been more or less stable.
The new lava flows have not changed the flow field’s surface significantly, but mostly overlap older flows, thickening it. A significant part of the erupted lava goes into a tube system that feeds the flow field downslope including the lava delta that mostly continues to grow slowly on its northern margin.
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Shiveluch (Kamchatka): (6 Oct) 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 .
The full report is as follows: VA AT 20211006/2210Z FL170 EXTD ESE MOV 16KT REPORTED to 17000 ft (5200 m)
Sakurajima (Kyushu, Japan): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20211007/2017Z VA CLD UNKNOWN OBS VA DTG:07/2020Z
Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20211007/1931Z FL060 EXTD W OBS VA DTG:07/1930Z
Kilauea (Hawai’i): HVO lowered Kīlauea’s volcano alert level to WATCH and its aviation color code to ORANGE, reflecting the less-hazardous nature of the ongoing eruption.
Note that in our color scheme, the volcano remains „red“, meaning that it is erupting at the moment.
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Popocatépetl (Central Mexico): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 25000 ft (7600 m) altitude or flight level 250 .
The full report is as follows: NEW VA EMS CONFIRMED to 25000 ft (7600 m)
Fuego (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: ONGOING VA EMS to 15000 ft (4600 m)
Nevado del Ruiz (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EM HAS DISP
Sangay (Ecuador): (6 Oct) 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 and is moving at 10 kts in W direction.
The full report is as follows: PSBL VA EMS 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 17000 ft (5200 m) altitude or flight level 170 .
The full report is as follows: VA RPRTD AND SEEN IN STLT/WEBCAM to 17000 ft (5200 m)
Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: UNABLE TO DETECT
Nevados de Chillán (Central Chile): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 13000 ft (4000 m) altitude or flight level 130 and is moving at 30 kts in SE direction.
The full report is as follows: INTERMITTENT EMISSIONS to 13000 ft (4000 m)
