Map of today's active volcanoesEtna (Sicily, Italy): The volcano's becoming more and more restless over the past several days, both internally and externally. Weak ash emissions have been occurring from the Northeast Crater although these likely represent older pulverized rocks and not fresh magma near the surface. The activity prompted the volcano observatory in Catania (INGV) to issue a volcanic ash warning for aviation, raising the alert level to orange yesterday (3 Nov 2026).More notably, seismic activity has been on the rise lately, and suggest that something is likely about to change in the near future. Volcanic tremor continues to undergo fluctuations, but along a gradual rising trend overall, and is now near high levels. Recent monitoring data reveal an interesting shift in the location of the sources of the volcanic tremor sources towards the Southeast Crater and the Valle del Bove. In addition, there have been several deep earthquakes under the volcano's western flank in the area of Bronte. ... [read more] ... [show less] Volcanic tremor shifts to the South East crater and Valle del BoveAccording to the latest weekly monitoring report (INGV, 3 Nov 2026), volcanic tremor fluctuated significantly during the observation period from 26 October to 1 November. A particularly notable increase began at approximately 22:00 UTC on 31 October, when tremor amplitude rose rapidly from low to moderate levels. It continued increasing during the following hours, approaching the threshold of high values at around 16:20 UTC on 1 November. Tremor then gradually decreased again.Campi Flegrei (Phlegrean Fields) (Italy): The Campi Flegrei volcanic caldera near Naples continues to show signs of unrest, with ongoing ground uplift, frequent small earthquakes and elevated gas emissions. According to the latest INGV weekly report, 64 earthquakes were recorded between 26 October and 1 November, while the ground continues to rise at approximately 1 cm per month. Meanwhile, volcanic CO₂ emissions are causing serious problems for local infrastructure: a railway tunnel connecting Naples with Pozzuoli remains closed because of hazardous gas concentrations, with no reopening date in sight.Two earthquake swarms near Pozzuoli and Solfatara ... [read more] ... [show less] Seismic activity continued across the Campi Flegrei caldera during the reporting period. Of the 64 earthquakes detected, 42 events with magnitudes of 0.0 or greater were located by the monitoring network. The strongest reached a magnitude of 2.4 (±0.3).Fourteen earthquakes occurred during two distinct seismic swarms. The first began at 10:39 UTC on 26 October southwest of the Solfatara crater. It consisted of four earthquakes with magnitudes between 0.0 and 2.2. The second swarm started at 16:30 UTC on 27 October in the Pozzuoli area and included ten earthquakes, with the strongest reaching magnitude 2.4.Sheveluch (Kamchatka): (4 Nov) Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Tokyo warned of a volcanic ash plume rising to an estimated 23000 ft (7000 m), or flight level 230, and moving at 25 kts in E direction.Original VAAC bulletin: ash plume to 23,000 ft (7,000 m) as of Nov 4, 00:20 UTCIbu (Halmahera, Indonesia): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070.Original VAAC bulletin: ash plume to 7,000 ft (2,100 m) as of Nov 4, 18:20 UTCLewotolo (Lesser Sunda Islands): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070.Original VAAC bulletin: ash plume to 7,000 ft (2,100 m) as of Nov 4, 16:19 UTCMarapi (Western Sumatra, Indonesia): (4 Nov) The Volcanic Ash Advisory Center (VAAC) Darwin issued the following bulletin.Original VAAC bulletin: ERUPTION REPORTED AT 04/0350Z EST VA DTG: 04/0410ZDukono (Halmahera): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 8000 ft (2400 m), or flight level 080.Original VAAC bulletin: ash plume to 8,000 ft (2,400 m) as of Nov 4, 17:20 UTCAoba (Vanuatu): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Wellington warned of a volcanic ash plume rising to an estimated 45000 ft (13700 m), or flight level 450, and moving at 40 kts in SE direction.Original VAAC bulletin: ash plume to 45,000 ft (13,700 m) as of Nov 4, 14:00 UTCPopocatépetl (Central Mexico): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 20000 ft (6100 m), or flight level 200.Original VAAC bulletin: ash plume to 20,000 ft (6,100 m) as of Nov 4, 14:06 UTCSantiaguito (Guatemala): Light volcanic ash emissions were observed at Santiaguito on webcam as of 4 November 2026 at 13:40 UTC, but no ash plume height was reported. Forecasts indicate possible continued ash movement to the west-southwest.Original VAAC bulletin: Santiaguito Volcanic Ash AdvisoryFuego (Guatemala): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 15000 ft (4600 m), or flight level 150.Original VAAC bulletin: ash plume to 15,000 ft (4,600 m) as of Nov 4, 18:00 UTCPuracé (Colombia): The Volcanic Ash Advisory Center (VAAC) Washington issued the following bulletin.Original VAAC bulletin: PSBL VA EMSSangay (Ecuador): Possible volcanic ash emissions were reported for Sangay, but no ash was observed on satellite or webcam images due to weather cloud cover. Forecasts indicate potential ash movement to the west-southwest through the next 12 hours.Original VAAC bulletin: Sangay Volcanic Ash AdvisoryReventador (Ecuador): Volcanic ash was seen in webcam images from Reventador as of 08:30 UTC on 4 November 2026. Forecasts indicate possible continued ash presence up to 18 hours after the observation.Original VAAC bulletin: ash plume observed as of 04 Nov 2026, 08:30 UTCVolcano Activity Summary for 4 Nov 2026: