Suwanose-jima (Ryukyu Islands): (9 Apr) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20230409/0621Z OVER FL060 STNR OBS VA DTG:09/0620Z
Semeru (East Java, Indonesia): (9 Apr) The actively growing lava dome in the inner Jonggring Saloko summit crater generated a block-and-ash flow yesterday.
The pyroclastic flow descended along the steep southeastern ravine and reached approx. 1,5 km length as can be seen in the video recorded by local observers in Huntap. Grey ash plumes formed as they separated from the current (so-called phoenix clouds). The reason for this flow was presumably either accumulated lava material from the front of the lava flow or destabilization of the lava dome resulting in the partial collapse. Pyroclastic flows are deadly, turbulent hot avalanches of lava rock fragments of all sizes embedded in a mixture of turbulent gas and ash racing down slopes.
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Dukono (Halmahera): (8 Apr) 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 09/2250Z MOV SE OBS VA DTG:08/2250Z to 7000 ft (2100 m)
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 and is moving at 10 kts in SE direction.
The full report is as follows: CONT VA EMS to 20000 ft (6100 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: OCNL VA EMS. to 15000 ft (4600 m)
Nevado del Ruiz (Colombia): (9 Apr) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 21000 ft (6400 m) altitude or flight level 210 and is moving at 15 kts in E direction.
The full report is as follows: CONT VA EMS OBS to 21000 ft (6400 m)
Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 27000 ft (8200 m) altitude or flight level 270 and is moving at 10 kts in E direction.
The full report is as follows: SPORADIC EMISSIONS to 27000 ft (8200 m)
Volcano Activity Summary for 9 Apr 2023:
