Etna (Sicily, Italy): (20 Jun) The Istituto Nazionale di Geofisica e Vulcanologia in Catania reported another phase of strombolian activity that took place yesterday.
At approximately 04:01 UTC, incandescent material was ejected from the South-East Crater accompanied by ash emissions, dispering north, and a new lava flow traveling towards the Valle del Leone.
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Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20250620/1831Z FL080 EXTD NW OBS VA DTG:20/1830Z
Raung (East Java): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 17000 ft (5200 m) altitude or flight level 170, and is moving at 05 kts in W direction.
The full report is as follows: VA TO FL170, LAST REPORTED AT 20/1420Z EST VA DTG:20/1800Z to 17000 ft (5200 m)
Ibu (Halmahera, Indonesia): 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 S direction.
The full report is as follows: VA TO FL080, LAST REPORTED AT 20/1521Z EST VA DTG:20/1550Z to 8000 ft (2400 m)
Lewotobi (Flores): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 12000 ft (3700 m) altitude or flight level 120 .
The full report is as follows: VA TO FL120 MOV NW, OBS AT 20/1720Z EST VA DTG:20/1720Z to 12000 ft (3700 m)
Lewotolo (Lesser Sunda Islands): (20 Jun) 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 20/0750Z MOV W OBS VA DTG:20/0750Z to 7000 ft (2100 m)
Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin 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: DISCRETE VA MOV WNW, OBS AT 20/1650Z OBS VA DTG:20/1650Z to 15000 ft (4600 m)
Dukono (Halmahera): (20 Jun) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 9000 ft (2700 m) altitude or flight level 090 .
The full report is as follows: VA TO FL090 OBS AT 19/0420Z MOV N OBS VA DTG:20/0420Z to 9000 ft (2700 m)
Kilauea (Hawai’i): The 26th lava fountaining episode at the Halemaʻumaʻu summit crater began this morning, at approximately 1:40 a.m. local time on June 20, 2025. Lava fountains have been reaching more than 1,000 feet (300 meters) height and feed multiple lava flows covering the crater floor.
The volcano observatory reports: „According to the National Weather Service, winds are blowing from the north direction, which suggests that volcanic gas emissions and tephra from the lava fountain may be distributed south of Halema’uma’u caldera.
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Reventador (Ecuador): (19 Jun) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA DTCTD
Volcano Activity Summary for 20 Jun 2025:
