Etna (Sicily, Italy): (29 Jul) After little more than a week of calm, the volcano started to be restless again during the past 2 days, and has been increasing its activity at the New SE crater in the past two hours or so.
Accompanied by strongly fluctuating tremor, ash emissions and mild explosive activity began again at the New SE crater yesterday. Right now, the volcanic tremor signal is rising sharply, which in the past months always announced a new lava fountaining episode to occur very soon.
Ebeko (Paramushir Island): (28 Jul) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20210728/2248Z FL070 EXTD S REPORTED OBS VA DTG:28/2250Z
Suwanose-jima (Ryukyu Islands): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 13000 ft (4000 m) altitude or flight level 130 and is moving at 5 kts in NE direction.
The full report is as follows: VA EMISSIONS CONTINUING OBS VA DTG:29/1720Z to 13000 ft (4000 m)
Ulawun (New Britain, Papua New Guinea): (29 Jul) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: UNKNOWN OBS VA DTG:29/0010Z
Merapi (Central Java, Indonesia): The eruption of the volcano is slowly but surely intensifying as the active lava dome continues to grow with magma rising into it. A series of moderately large pyroclastic flows occurred this morning shortly after midnight local time, descending to the base of the summit cone, and reaching approx. 2 km length.
As the lava dome, a hill-shaped mass of viscous lava erupted in the summit crater and piling up there, is growing, more and more unstable hot lava material is accumulating and prone to collapse into hot rock falls, which in turn often develop into very dangerous pyroclastic flows, hot avalanches of hot gas, fine and large rock fragments as the gas-rich lava disintegrates while descending.
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Nevado del Ruiz (Colombia): (29 Jul) 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: VONA RPT VA EM 29/0309Z. 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 20000 ft (6100 m) altitude or flight level 200 .
The full report is as follows: NEW VA EMS to 20000 ft (6100 m)
Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 16000 ft (4900 m) altitude or flight level 160 .
The full report is as follows: CONTG OCNL VA EMS. to 16000 ft (4900 m)
Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: INTERMITTENT EMISSIONS
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 14000 ft (4300 m) altitude or flight level 140 and is moving at 10 kts in NE direction.
The full report is as follows: continuous ash emissions to 14000 ft (4300 m)
