Volcanic activity worldwide 26 Aug 2023: Santiaguito volcano, Fuego, Popocatépetl, Reventador, Clev…

Map of today’s active volcanoes

Mayon (Luzon Island, Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20230826/1058Z VA CLD UNKNOWN REPORTED OBS VA DTG:26/1100Z

Shishaldin (Aleutian Islands, Alaska): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Anchorage warned about a volcanic ash plume that rose up to estimated 21000 ft (6400 m) altitude or flight level 210 and is moving at 45 kts in N direction.
The full report is as follows: RESIDUAL VA FM 20230825/1922Z ERUPTION. to 21000 ft (6400 m)
…26 Aug:
The Alaska Volcano Observatory (AVO) reported that the recent 8th eruptive episode ended at midnight today.
Signs of the weakening seismic activity were monitored at 05:30 PM yesterday and currently remain low.
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Hence, the AVO observatory dropped the alert status for the volcano back to Orange.
Phases of strong eruptive periods have continued at the volcano since early July characterized by continuous ash-rich emissions, lava fountains and lava flows.

…26 Aug:
The volcano entered another 8th strong eruptive episode a few hours ago and is still in progress at the time of this update.
Volcanic tremor started to rise quickly at about 03:00 AM early morning today and has been intensifying until 04:30 PM when it reached its spike. The tremor dropped, but remains elevated.
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In the beginning, the eruptive phase consisted of seven explosive events spewing ash emissions up to 40,000 ft (12 km) elevation. Fresh ash deposits (tephra) have covered a considerable part of the edifice. Gradually, but slightly lowering of the continuing dense ash column has been reported by reaching its altitude to 30,000 ft (9 km), later 28,000 ft (8,5 km) extending about 450 km to the northeast of the volcano.
During the eruption, strongly elevated surface temperatures were identified in satellite data associated with emissions generated by fountaining and lava flows atop the summit.

Cleveland (Aleutian Islands, Alaska): (26 Aug) The seismic activity at the volcano has decreased over the past few weeks.
Thus, the Alaska Volcano Observatory (AVO) lowered the alert level for the volcano to „Green“.
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The AVO continues: „An increase in the number of small earthquakes near Mount Cleveland in mid-July 2023 prompted raising the Aviation Color Code and Volcano Alert Level from UNASSIGNED/UNASSIGNED to YELLOW/ADVISORY on July 19. This activity continued for the next several weeks but has since declined. Slightly elevated surface temperatures and weak gas emissions from the summit crater continue to be observed occasionally, but this is not unusual for Mount Cleveland“

Popocatépetl (Central Mexico): (26 Aug) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO RCNT VA OBS

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: NEW VA OBSD 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: FRQ VA EMS OBSD 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: FAINT VA OBSD 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: VA EM CONT 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 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: NEW VA EM RPRTD to 15000 ft (4600 m)

Sabancaya (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 S direction.
The full report is as follows: INTERMITTENT EMISSIONS to 24000 ft (7300 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 NW direction.
The full report is as follows: continuous ash emissions to 24000 ft (7300 m)

Satellite image of Mayon volcano on 26 Aug 2023