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Volcanic activity worldwide 27 Aug 2020: Fuego volcano, Semeru, Dukono, Reventador, Mauna Loa, Sanga...

Thursday Aug 27, 2020 21:00 PM | BY: SEVERAL CONTRIBUTORS
Map of today's active volcanoes
Map of today's active volcanoes
Satellite image of Nishino-shima volcano on 27 Aug 2020
Satellite image of Nishino-shima volcano on 27 Aug 2020
Satellite image of Semeru volcano on 27 Aug 2020
Satellite image of Semeru volcano on 27 Aug 2020
Ambrym safety map (C) Vanuatu Meteorology and Geohazards Department
Ambrym safety map (C) Vanuatu Meteorology and Geohazards Department
Satellite image of Gaua volcano on 27 Aug 2020
Satellite image of Gaua volcano on 27 Aug 2020
Aoba caldera safety map (C) Vanuatu Meteorology and Geohazards Department
Aoba caldera safety map (C) Vanuatu Meteorology and Geohazards Department
Satellite image of Suretamatai volcano on 27 Aug 2020
Satellite image of Suretamatai volcano on 27 Aug 2020
Thermal image at Mauna Loa at northwest rim captured yesterday (image: HVO)
Thermal image at Mauna Loa at northwest rim captured yesterday (image: HVO)
Strombolian-type explosion from Fuego volcano on 26 August (image: INSIVUMEH)
Strombolian-type explosion from Fuego volcano on 26 August (image: INSIVUMEH)
Nishino-shima (Volcano Islands, Japan): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 9000 ft (2700 m) altitude or flight level 090 and is moving at 10 kts in W direction.
The full report is as follows: VA EMISSIONS CONTINUING OBS VA DTG:27/1720Z to 9000 ft (2700 m)

Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20200827/1351Z FL080 EXTD NW OBS VA DTG:27/1350Z

Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin 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: DISCRETE VA EMISSION TO FL130 MOV W OBS AT 27/1840Z to 13000 ft (4000 m)

Dukono (Halmahera): 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 15 kts in NW direction.
The full report is as follows: CONTINUOUS VA EMISSION TO FL070 EXT NW OBS VA DTG:27/1020Z to 7000 ft (2100 m)

Ambrym (Vanuatu): Since the last update, activity at Ambrym is continuing at the low unrest level Volcanic Alert Level 1. Some volcanic hazards do remain on Ambrym specifically at the summit and eastern part of the Island. These are related to the presence of cracked areas. In addition to the summit hazards, the presence of active rifts and faults (major ground cracking) at the South-East area of Ambrym are also hazardous, they will continue to be eroded and affected by earthquake activity.
The danger zone at the summit area remains limited inside the Permanent Exclusion Zone at Benbow and Danger Zone A at Marum (See Ambrym caldera safety map). These danger zones are about 1 km around Benbow and 2 km around Marum craters including Maben-Mbwelesu, Niri-Mbwelesu and Mbwelesu. An additional danger zone at the South-East of Ambrym remains within 500 meters from major cracks. The lava lakes that used to appear in Benbow and Marum craters have disappeared since the December 2018 eruption. The remaining activity inside both craters consists of ongoing steam emissions.

Open cracks in the South-East Ambrym that formed during the December 2018 eruption may continue to open due to erosion. Major earthquake activity could continue to affect these cracks and weak layers or areas around the actives craters.

Lopevi (Vanuatu): The Vanuatu Meteorology and Geohazards Department (VMGD) report that activity at Lopevi volcano is continuing to show high levels of unrest. With the current state, the volcanic activity is likely to increase at any time but it could also remain at the same level for a long time. The volcano activity consists of continuous emission of steam plume. The Lopevi Volcanic Alert Level (VAL) has been at Level 2 since 23 September 2017.

Gaua (Vanuatu): Since the last update, Gaua volcano continues to show volcanic unrest and remains at Volcanic Alert Level 2. Volcanic hazards include volcanic gases remain on the Gaua volcanic cone where the ‘danger zone’ is located according to the Vanuatu Meteorology and Geohazards Department.

Aoba (Vanuatu): Since the last update, Aoba (Ambae) volcano continues to show low levels of unrest. However, volcanic hazards remain at the summit area and creeks (e.g. remobilization of remaining ash from 2017 and 2018 eruption). The danger zone at the summit remains limited in the Danger Zone A (See safety map). This danger zone (Danger Zone A) has a 2 km radius from the 2017-2018 active vents. An additional danger zone is within areas of flowing creeks during heavy rain.

There is no obvious emission of volcanic ash or gas from the eruptive vent(s) of Lake Voui (like it was in 2017-18). The volcanic ash that fell on Aoba during the 2017 and 2018 eruption will continue to influence the behaviour of streams and creeks when it rains. The creeks and streams can produce floods and carry debris (sands, gravel and boulders). The flow path of streams and creeks could change due to the flood debris. Landslide may also occur at some areas during heavy rain fall.

The Volcanic Alert Level (VAL) for Aoba has been at Level 1 since 23rd September 2019. A reminder that a volcanic eruption on Aoba could occur at any level of unrest and with little warning. Aoba volcano is a very large volcano and is frequently active.

Suretamatai (Banks Islands, Vanuatu): Since the last update, the volcanic unrest continues at Vanua Lava. Hazards from the volcano include volcanic gases located on the volcanic cone and the sulfur river.

Mauna Loa (Big Island, Hawai'i): (27 Aug) During the past week the Hawaiian Volcano Observatory (HVO) recorded 144 small-magnitude earthquakes below the volcano's summit and upper-elevation flanks. Most of these earthquakes occurred at shallow depths of less than 8 km (~5 miles) below ground level.
Slow summit inflation continues to be detected by the GPS, consistent with magma supply to the volcano's shallow storage system.
... [read more]

Fuego (Guatemala): (27 Aug) Explosive eruption of the volcano continues at moderate levels. Effusive activity is not observed after continuing lava flow on the northwest flank has ceased as we informed in the last update.
As the satellite image from 12 August shows, no lava flows are observed. Incandescence continues to be observed from the summit crater and caused weak to moderate avalanches of material towards the Seca, Taniluya, Ceniza, Trinidad and Las Lajas direction.
... [read more]

Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 and is moving at 35-40 kts in W direction.
The full report is as follows: CONS VA CLD EXTDG WSW. to 22000 ft (6700 m)

Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .
The full report is as follows: INTMT VA CLDS RPRTD. to 14000 ft (4300 m)

Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 26000 ft (7900 m) altitude or flight level 260 and is moving at 20 kts in SE direction.
The full report is as follows: STRONG PUFF EMISSION to 26000 ft (7900 m)
Previous news
Wednesday, Aug 26, 2020
Map of today's active volcanoes
Etna (Sicily, Italy): (26 Aug) Strombolian activity continues at fluctuating intensity from the saddle vent of the New SE crater characterized by occasional ash emissions. ... read all
Sunday, Aug 23, 2020
Map of today's active volcanoes
Ebeko (Paramushir Island): Explosive eruption of the volcano continues at fluctuating levels with sporadic ash emissions. ... read all

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