Volcanic activity worldwide 21 Jul 2023: Santiaguito volcano, Fuego, Klyuchevskoy, Popocatépetl, Ka…

Map of today’s active volcanoes

Eldey (Reykjanes Ridge, Iceland): (21 Jul) According to the Icelandic Institute of Earth Sciences, the latest estimated lava flow discharge rate is measured to be about 8,7 m3/s, detected between 17 and 18 July.
The value is highly comparable to previous eruptions in 2021 and 2022.
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As of 18 July, the outpouring lava has covered an area of 0,92 km2 with a volume of approx. 9 million m3.
After the western crater rim collapse on 19 July, the lava continues to spill out from the western part of the spatter cone at a moderate rate, keeping the flow active in the southern direction again, where the flow front continues to overrun the previous 2021 and 2022 lava flow fields.

Fagradalsfjall (Reykjanes Peninsula, Iceland): (21 Jul) According to the Icelandic Institute of Earth Sciences, the latest estimated lava flow discharge rate is measured to be about 8,7 m3/s, detected between 17 and 18 July.
The value is highly comparable to previous eruptions in 2021 and 2022.
… [read more] … [show less]
As of 18 July, the outpouring lava has covered an area of 0,92 km2 with a volume of approx. 9 million m3.
After the western crater rim collapse on 19 July, the lava continues to spill out from the western part of the spatter cone at a moderate rate, keeping the flow active in the southern direction again, where the flow front continues to overrun the previous 2021 and 2022 lava flow fields.

Reykjanes (Reykjanes peninsula (SW Iceland)): (21 Jul) According to the Icelandic Institute of Earth Sciences, the latest estimated lava flow discharge rate is measured to be about 8,7 m3/s, detected between 17 and 18 July.
The value is highly comparable to previous eruptions in 2021 and 2022.
… [read more] … [show less]
As of 18 July, the outpouring lava has covered an area of 0,92 km2 with a volume of approx. 9 million m3.
After the western crater rim collapse on 19 July, the lava continues to spill out from the western part of the spatter cone at a moderate rate, keeping the flow active in the southern direction again, where the flow front continues to overrun the previous 2021 and 2022 lava flow fields.

Klyuchevskoy (Kamchatka): (21 Jul) A new lava overflow occurred from the summit vent at approx. 13:00 UTC on 19 July.
The lava started to descend on the southeastern flank along the Apakhonchich chute, which confirms either a glowing steam from the summit detected by a surveillance camera or a surge of lava in the summit vent identified in the satellite image from 13 July.
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Glowing scoria bombs and lapilli continue to be ejected to several dozens of meters above the vent, characterized as strombolian-type explosions.
As a sign of the preceded effusive eruption, it might be considered the ongoing strombolian activity in the summit crater that commenced one month ago. This has likely led to an increased flux of a new batch of magma within the main conduit.

Nishino-shima (Volcano Islands, Japan): (20 Jul) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA AT 20230720/2130Z ARND 9NM S TOMOL FL100 REPORTED

Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20230721/0956Z FL070 STNR OBS VA DTG:21/0950Z

Mayon (Luzon Island, Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20230721/0915Z FL090 EXTD WSW REPORTED OBS VA DTG:21/0920Z
…21 Jul:
The effusive eruption of the volcano remains elevated.
Three lava flow arms on the southern Mi-isi, southeastern Bonga and eastern Basud ravine remain active, currently 2.8 km, 2.5 km and 600 m long.
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Collapsing parts of viscous lava flow fronts continue to generate glowing avalanches as they detach from it and roll down to the base of the edifice at about 4 km distance from the summit.
Moreover, block-and-ash flows continue to emanate from the summit lava dome as accumulated viscous lava material from the main conduit makes the dome prone to collapse, ooze out from there and tumble down in the form of dome-block avalanches. Pyroclastic density currents usually form ash plumes – phoenix clouds – towering wall of cloud rising above pyroclastic torrent. Pyroclastic flows are deadly, turbulent hot avalanche of lava rock fragments of all sizes embedded in a mixture of turbulent gas and ash racing down slopes

Karangetang (Siau Island, Sangihe Islands, 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 .
The full report is as follows: VA TO FL080 OBS AT 21/1010Z MOV NE OBS VA DTG:21/1100Z to 8000 ft (2400 m)

Ibu (Halmahera, Indonesia): (21 Jul) 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 MOV N OBS 21/0409Z OBS VA DTG:21/0409Z to 7000 ft (2100 m)

Dukono (Halmahera): (21 Jul) 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 TO FL070 MOV NE OBS 20/0400Z OBS VA DTG:21/0400Z 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 19000 ft (5800 m) altitude or flight level 190 .
The full report is as follows: VA EMS OBS to 19000 ft (5800 m)

Santiaguito (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 EMS PSBL to 15000 ft (4600 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: FRQT VA EMS to 15000 ft (4600 m)

Nevado del Ruiz (Colombia): (21 Jul) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VONA RPRT

Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires 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: continuous ash emissions to 23000 ft (7000 m)

Ubinas (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 15 kts in S direction.
The full report is as follows: EMISSION AT 21/0620Z to 27000 ft (8200 m)
…21 Jul:
The explosive eruption of the volcano continues at moderate levels.
Ash emissions rose to estimated altitudes of 20,000 ft (6,100 m) and 26,000 ft (7,900 m) and drifted about 15 km to the W-SW direction of the volcano throughout yesterday. Ashfall has been reported in the districts of Ubinas, Matalaque, Chojata, Lloque, Yunga and San Juan de Tarucani.
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The seismic station detected approx. 80 volcano-tectonic earthquakes per day during the period between 10 and 16 July, accompanied by rising magma flux inside the volcano’s conduits.
The warning bulletin states that ballistic impacts of volcanic bombs and pyroclastic flows could affect an area of about 4 km distance from the crater.

Volcano Activity Summary for 21 Jul 2023:

The invading 2023 lava flow field (pink) overlaps lava field from 2021 and 2022 (orange (image: IMO))