Volcanic activity worldwide 17 Jun 2021: Etna volcano, Fuego, Popocatépetl, Merapi, Semeru, Ibu, Du...

Etna (Sicily, Italy): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Toulouse warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 10 kts in SE direction.
The full report is as follows: ERUPTION AT 20210617/0540Z STROMBOLIAN ACTIVITY ONGOING to 15000 ft (4600 m)

Ibu (Halmahera, Indonesia): (16 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 and is moving at 10 kts in W direction.
The full report is as follows: DISCRETE VA ERUPTIONS TO FL070 OBS VA DTG:16/2300Z to 7000 ft (2100 m)

Lewotolo (Lesser Sunda Islands): (16 Jun) 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 10 kts in W direction.
The full report is as follows: DISCRETE VA EMISSIONS TO FL080 EXTENDING W OBS VA DTG:16/2250Z to 8000 ft (2400 m)

Merapi (Central Java, Indonesia): The activity of the volcano remains essentially unchanged characterized by the actively growing lava dome.
Collapsing parts of the dome triggered several block-and-ash flows caused by gravitational collapse of the lava dome. Rockfall avalanches traveled over the southwestern slopes about 2 km distance from the summit and lifted ash plumes separating from the avalanches (so-called phoenix clouds).
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Pyroclastic flows - turbulent and hot avalanches of hot lava rocks, ash and volcanic gasses mixed together - are being released from the growing dome.
The volcano observatory counted about 270 earthquakes on 15 June.


Semeru (East Java, Indonesia): (17 Jun) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA REPORTED TO FL130 OBS VA DTG:16/2350Z

Dukono (Halmahera): (17 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: CONTINUOUS VA ERUPTION TO FL070 MOV WNW OBS VA DTG:17/0740Z to 7000 ft (2100 m)

Semisopochnoi (United States, Aleutian Islands): The Alaska Volcano Observatory (AVO) decided to lower the alert level for the volcano to "yellow", as the seismic activity has continued at low levels accompanied by no ash emissions or explosions since 30 May.
Satellite views over the past few weeks have detected elevated surface temperatures and sulfur dioxide emissions were observed on several occasions.
Source: Alaska Volcano Observatory volcano activity update 17 June 2021

Popocatépetl (Central Mexico): The activity of the volcano continues at generally decreased levels over the past two weeks.
Sporadic emissions of steam and gases (52 tonnes on today) continue at the summit vent that rose to estimated 6 km altitude and drifted NW. No explosive eruption was detected during this period.
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Daily volcanic tremor has rapidly decreased to average 50 min / day during the past 2 weeks and remains deeply under the average-than-usual levels (approx. 1000 min / day) confirming that the activity of the volcano continues at reduced levels.


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: VA EM CONTINUES to 15000 ft (4600 m)

Nevado del Ruiz (Colombia): 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 .
The full report is as follows: PSBL VA EMS to 20000 ft (6100 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: CONTG VA EMS. to 19000 ft (5800 m)

Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA NOT OBSD

Sabancaya (Peru): The explosive eruption of the volcano continues at moderate levels and its activity has remained essentially unchanged.
The Instituto Geofísico del Perú (IGP) noted that vulcanian-type explosions at regular intervals of 79 per day occurred from the summit crater during 7-13 June.
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Eruption columns rose to an estimated altitude of 23,200 ft (7,000 m) and drifted most often SE direction.
The seismic station detected approx. 1070 volcano-tectonic earthquakes with average magnitude M 2-M 3.5 accompanied by rising magma flux inside the volcano's conduits.


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 .
The full report is as follows: INTERMITTENT PUFF EMISSION to 13000 ft (4000 m)