Volcanic activity worldwide 5 Jul 2023: Fuego volcano, Popocatépetl, Merapi, Reykjanes, Reventador,…

Map of today’s active volcanoes

Reykjanes (Reykjanes peninsula (SW Iceland)): Seismic recordings detected a seismic crisis at Reykjanes Peninsula that started yesterday.
Nearly 1800 earthquakes in total have been registered by the Icelandic Meteorological Office since the earthquakes swarm commenced, of which four were recorded with magnitude of more than 4 (M 4.6 at 08:21 this morning), typical sign of magma pushing its way towards the surface through dyke injection/s. The precise location of dyke is not located yet, but the recent model calculations indicate a batch of magma at depth of about 15 km beneath the surface.
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Another investigations hint magma location at Svartsengi, the eruption site in 2020 and 2022.

Mayon (Luzon Island, Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20230705/1906Z VA CLD UNKNOWN REPORTED OBS VA DTG:05/1910Z
…5 Jul:
The elevated activity at the volcano continues.
Block-and-ash flows continue to descend over the southern Mi-si ravine, reaching length of at least 4000 m. Pyroclastic density currents usually form ash plumes – phoenix clouds – towering wall of cloud rising above pyroclastic torrent. The reason for this flow was presumably a destabilization of the lava dome resulting in the partial collapse.
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Two lava flows arms on the southern Mi-si and southeastern Bonga ravine continue to be active, currently 2.8 km and 1.3 km long.
Near-constant emissions of steam-laden plumes (so-called degassing) rose 200 meters above the summit and drifted west, northwest and southwest. Sulfur dioxide (SO2) emissions reached to a 1170 tonnes on 4 July.

Merapi (Central Java, Indonesia): The extrusive activity at the volcano continues.
Glowing avalanches (hot avalanches of lava particles and ash) descended the southwestern flank of the volcano at 20:26 local time tonight, reaching approx. 2700 m sliding distance from the summit. It resulted from growing, more and more unstable hot lava material, accumulating in the active lava dome at the southwestern rim, making it prone to collapse into hot rock falls.
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Ash plumes were separated from pyroclastic density currents (so-called phoenix clouds) that rose above the crater.
The public is recommended to stay at least 3 km away from the summit.

Popocatépetl (Central Mexico): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 23000 ft (7000 m) altitude or flight level 230 .
The full report is as follows: CONT VA EMS SEEN IN SAT to 23000 ft (7000 m)

Fuego (Guatemala): 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: VA EMS OBS to 16000 ft (4900 m)

Nevado del Ruiz (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA EMS

Sangay (Ecuador): 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 .
The full report is as follows: VA EMS OBS to 21000 ft (6400 m)

Reventador (Ecuador): 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: FREQUENT VA EMS to 15000 ft (4600 m)

Cotopaxi (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA EMS

Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 .
The full report is as follows: continuous ash emissions to 22000 ft (6700 m)

Ubinas (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 24000 ft (7300 m) altitude or flight level 240 and is moving at 5 kts in NE direction.
The full report is as follows: continuous ash emissions to 24000 ft (7300 m)
…5 Jul:
The volcano entered the explosive phase yesterday, characterized by vigorous explosions so far.
Another such spectacular vulcanian-sized explosion occurred from the summit vent at 14:06 local time yesterday. An abundant ash plume rose to estimated 27,000 ft (8,200 m) height and drifted towards the SW direction.
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#EstaTarde | El volcán Ubinas registró una nueva explosión con emisiones de cenizas que alcanzaron una altura máxima de 3500 metros sobre la cima del cráter, reporte que ha sido informado por el #Ingemmet al Centro de Operaciones de Emergencia Nacional @COENPeru pic.twitter.com/CeqDsngCzC

— INGEMMET (@IngemmetPeru) July 4, 2023

Piton de la Fournaise (La Réunion): The effusive eruption at the volcano continues at stable levels.
A single active vent within the southeastern slope eruptive fissure has been spilling out the lava into the Grandes Pentes this morning, currently located at altitude 1700 meters. The main flow front from the SE fissure continues to advance towards the main road, whose current position was about 2-2.5 km this morning. The current average discharge lava flow rate is approx. between 5 and 10 m3/s over the past 24 hours using the HOTVOLCC platform.
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The volcano-tectonic tremor dropped sharply last night at 21:05 local time. A number of earthquakes have decreased over the past 24 hours to 36 events.
Ground deformation instruments continue to record the whole edifice deflated, accompanied by the continuing emptying of magma chamber and feeding the dike. Magma chamber is located about 2 km beneath the edifice.

Volcano Activity Summary for 5 Jul 2023:

Seismic swarm location at Reykjanes Peninsula over the past 4-12 hours (image: IMO)