Volcanic activity worldwide 24 Aug 2023: Popocatépetl volcano, Karangetang, Reventador, Campi Flegr…

Map of today’s active volcanoes

Campi Flegrei (Phlegrean Fields) (Italy): Volcanic unrest continues at the volcano, characterised by continuing uplift, seismic swarms involving quakes felt by the local population, and intense degassing from various fumaroles and through diffuse ground emissions. Some of these phenomena have increased in intensity over the past weeks. However, it is believed that chances of an eruption in a near future are still very low, but the situation should be monitored very closely.
The observatory in Naples (OV-INGV) published a detailed article based on its latest monitoring data, evaluating the situation. It is reported that ground deformation, centered around the area of Pozzuoli, not only continues but its rate has increased in recent weeks: Between August 14 and 20, 2023, the average value of the uplift rate in the area of maximum deformation was about 15 mm/month, OV-INGV writes. Since the current episode of uplift started in 2005, the slow ground uplift has reached 111 centimeters in the Rione Terra area in total.
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In addition to the increase of rate of ground deformation, seismic activity has been more intense recently. In particular, seismic swarms have been occurring more frequently. In the week 14-20 August 2023, 3 earthquake swarms occurred with a total of 203 quakes detected above magnitude 0.0 and up to a magnitude 3.6 event during the night 17-18 August, which was felt widely in the area of Solfatara, Pisciarelli, and Accademia. Most hypocenters of the quakes were east of Pozzuoli town and at shallow depths between 3-0 km below the ground.
A well-known phenomenon

Mayon (Luzon Island, Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20230824/1809Z VA CLD UNKNOWN REPORTED OBS VA DTG:24/1810Z

Karangetang (Siau Island, Sangihe Islands, Indonesia): (24 Aug) 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 MOV N AT 23/0640Z OBS VA DTG:24/0640Z to 8000 ft (2400 m)

Lewotolo (Lesser Sunda Islands): (24 Aug) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: GROUND REPORT OF ERUPTION WITH VA TO FL070 OBS VA DTG:24/0810Z
…24 Aug:
The effusive-explosive eruption at the volcano continues.
Strombolian and occasional larger vulcanian-type explosions continue to take place from the cinder cone within the main caldera. The PVMBG surveillance cameras observed an explosion yesterday. Grey ash plumes rose approx. 700 meters above the summit and drifted towards the west and northwest of the volcano.
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The local volcano observatory reported seismic signals with maximum amplitudes of 30.7 mm and a duration of 110 seconds.
The lava flow at the volcano continues to be active mainly within the caldera, as seen in the attached timelapse processed by the Sentinel-2. The outer eastern flank seems to being stopped fed by lava for a long time.

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 SEEN IN SAT AND WEBCAM to 19000 ft (5800 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: NEW VA EMS to 20000 ft (6100 m)

Sangay (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA NOT SEEN IN SAT

Reventador (Ecuador): (24 Aug) 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 PSBLY OBSD. to 15000 ft (4600 m)
…24 Aug:
The effusive-explosive eruption of the volcano continues and has remained essentially unchanged.
Near-constant vulcanian explosions continue to take place from the summit crater that reached 4,6 km (15,000 ft) height and drifted west and northwest over the past few days.
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The viscous lava flow on the northeastern flank remains active. Incandescent blocks of the lava continue to be observed on the southern flank, tumbling down several hundred of meters distance from the summit.

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 10 kts in W direction.
The full report is as follows: continuous ash emissions to 24000 ft (7300 m)

Ubinas (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: NO VA EMISSION IN OVER 6 HRS

Location of recent quakes (map and in sections E-W below and N-S to the right), above magnitudes 0.0 located at the Phlegraean Fields during the week of August 14 – 20, 2023. (image: INGVvulcani)