Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 21000 ft (6400 m), or flight level 210. Original VAAC bulletin:
FVXX24 at 02:59 UTC, 27/10/26 from KNES VA ADVISORY DTG: 20261027/0256Z
Chikurachki (Paramushir Island): (26 Oct) Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Tokyo warned of a volcanic ash plume rising to an estimated 9000 ft (2700 m), or flight level 090, and moving at 25 kts in E direction. Original VAAC bulletin:ash plume to 9,000 ft (2,700 m) as of Oct 26, 06:20 UTC
Sakurajima (Kyushu, Japan): An eruption was reported at Sakurajima at 13:27 UTC on 26 October 2026, but no volcanic ash cloud was identifiable in satellite data as of 13:30 UTC. No forecast ash cloud information is available. Original VAAC bulletin:no ash plume observed as of 26 Oct 2026, 13:30 UTC
Langila (New Britain, Papua New Guinea): 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 Oct 26, 15:10 UTC
Karangetang (Siau Island, Sangihe Islands, 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 Oct 26, 14:20 UTC
Ibu (Halmahera, Indonesia): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 6000 ft (1800 m), or flight level 060, and moving at 05 kts in W direction. Original VAAC bulletin:ash plume to 6,000 ft (1,800 m) as of Oct 26, 15:30 UTC
Dukono (Halmahera): 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 Oct 26, 10:50 UTC
Yasur (Tanna Island, Vanuatu): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Wellington warned of a volcanic ash plume rising to an estimated 3000 ft (900 m), or flight level 030, and moving at 05 kts in W direction. Original VAAC bulletin:ash plume to 3,000 ft (900 m) as of Oct 26, 19:23 UTC
White Island (New Zealand): A continuous low-level eruption was reported at White Island. Ash movement is estimated towards the east at 25 knots, with the latest advisory issued at 14:33 UTC on 26 October 2026. Original VAAC bulletin:continuous low-level eruption as of 26 Oct 2026, 14:33 UTC
Kilauea (Hawai’i): The interferometric Sentinel-1D pair in VV polarisation of the volcano, acquired on 24 September and 6 October 2026, shows a compact set of concentric fringes confined to the summit caldera, superimposed on broad, long-wavelength phase gradients across the wider scene.
The displacement corresponds to 9.8 cm of relative displacement in the satellite line of sight over the 12-day interval. One full colour cycle corresponds to 2.77 cm of displacement in the satellite line of sight. Concentric fringes within the summit caldera indicate a localised deformation source. The broad, long-wavelength colour gradients elsewhere in the scene are consistent with tropospheric delay rather than ground motion, and the speckled areas are decorrelated, mainly over vegetated terrain …26 Oct: The attached time-lapse includes NISAR (NASA-ISRO Synthetic Aperture Radar) GSLC (Geocoded Single Look Complex) and GCOV (Geocoded Polarimetric Covariance) radar products during June-October period within the Halemaʻumaʻu summit crater.
Popocatépetl (Central Mexico): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 17000 ft (5200 m), or flight level 170. Original VAAC bulletin:ash plume to 17,000 ft (5,200 m) as of Oct 26, 14:01 UTC
Santiaguito (Guatemala): Occasional volcanic ash emissions have been reported for Santiaguito. No ash plume height or observation time was specified in the latest advisory; forecasts indicate possible continued emissions moving southeast. Original VAAC bulletin:Santiaguito Volcanic Ash Advisory
Fuego (Guatemala): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 16000 ft (4900 m), or flight level 160, and moving at 5 kts in SW direction. Original VAAC bulletin:ash plume to 16,000 ft (4,900 m) as of Oct 26, 17:40 UTC
Puracé (Colombia): Possible volcanic ash emissions were reported for Puracé. No ash plume was detected in satellite imagery as of the latest advisory on October 26, 2026, at 19:38 UTC; forecasts suggest potential continued emissions moving northwest. Original VAAC bulletin:Puracé Volcanic Ash Advisory
Sangay (Ecuador): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 21000 ft (6400 m), or flight level 210. Original VAAC bulletin:ash plume to 21,000 ft (6,400 m) as of Oct 26, 14:20 UTC
Reventador (Ecuador): Occasional volcanic ash emissions were reported for Reventador. As of 26 October 2026 at 18:20 UTC, no ash plume height was observed; forecasts indicate possible continued ash movement northwest. Original VAAC bulletin:Reventador Volcanic Ash Advisory
Nevados de Chillán (Central Chile): Weak emissions were reported at Nevados de Chillán, but no ash plume height was observed due to weather cloud cover as of October 26, 2026. The estimated ash cloud was moving southeast at 15 knots according to the latest forecast. Original VAAC bulletin:Nevados de Chillán Volcanic Ash Advisory
Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 16000 ft (4900 m), or flight level 160, and moving at 5 kts in SW direction. Original VAAC bulletin:
FVXX22 at 18:15 UTC, 26/10/26 from KNES VA ADVISORY DTG: 20261026/1813Z
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:
FVAU05 at 14:44 UTC, 26/10/26 from ADRM VA ADVISORY DTG: 20261026/1445Z VAAC: DARWIN VOLCANO: KARANGETANG 267020 PSN: N0247 E12524 AREA: INDONESIA SOURCE ELEV: 1797M AMSL ADVISORY NR: 2026/20 INFO SOURCE: HIMAWARI-9, CVGHM ERUPTION DETAILS: VA TO FL070 OBS AT 26/1420Z MOV W OBS VA DTG: 26/1420Z OBS VA CLD: SFC/FL070 N0245 E12527 - N0245 E12517 - N0251 E12517 - N0249 E12527 MOV W 05KT FCST VA CLD +6 HR: 26/2020Z SFC/FL070 N0245 E12527 - N0231 E12509 - N0256 E12503 - N0249 E12527 FCST VA CLD +12 HR: 27/0220Z SFC/FL070 N0245 E12526 - N0231 E12509 - N0256 E12503 - N0249 E12527 FCST VA CLD +18 HR: 27/0820Z SFC/FL070 N0245 E12527 - N0237 E12520 - N0241 E12502 - N0306 E12513 - N0250 E12526 RMK: DISCRETE VA EMISSION IDENTIFIABLE ON SATELLITE IMAGERY. REGULAR GROUND REPORTS INDICATE INTERMITTENT ERUPTIONS ARE ONGOING. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20261026/1930Z=
Wrapped interferometric phase at Kīlauea, Hawaiʻi, from a Sentinel-1D VV pair spanning 24 September – 6 October 2026 (12-day temporal baseline). Inset: wrapped phase along a profile across the fringe pattern; the sawtooth shows three full phase wraps over the readable section, giving a total phase difference of 22.2 rad, equivalent to 9.8 cm of relative line-of-sight displacement. (image: Sentinel-1, processed by Martin Kelko)
The interferometric Sentinel-1D pair in VV polarisation of the volcano, acquired on 24 September and 6 October 2026, shows a compact set of concentric fringes confined to the summit caldera, superimposed on broad, long-wavelength phase gradients across the wider scene.
The displacement corresponds to 9.8 cm of relative displacement in the satellite line of sight over the 12-day interval. One full colour cycle corresponds to 2.77 cm of displacement in the satellite line of sight. Concentric fringes within the summit caldera indicate a localised deformation source. The broad, long-wavelength colour gradients elsewhere in the scene are consistent with tropospheric delay rather than ground motion, and the speckled areas are decorrelated, mainly over vegetated terrain
