Steam emisisons from White Island on 4 April (image: GeoNet New Zealand)
Over the past week, favourable weather has allowed clear views from mainland cameras, revealing a weak steam plume rising from Whakaari/White Island. This aligns with observations made during an aerial survey on 4 April, when a bright white plume was seen emerging from the active vent. No new ash deposits or ballistic blocks were observed on the crater floor. Thermal imagery indicated maximum vent temperatures of approximately 100 °C.
The volcano is not currently erupting, though volcanic activity can increase with little or no warning. Any future eruptions would most likely affect the crater floor and the immediate area surrounding the island, while ashfall on the mainland remains unlikely.
Due to the current absence of real‑time monitoring data from the island, it is not possible to reliably distinguish between Volcanic Alert Level (VAL) 1 and 2. Consequently, Whakaari/White Island will remain at a minimum of VAL 2 until on‑island monitoring is restored.
Shiveluch (Kamchatka): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Anchorage warned about a volcanic ash plume that rose up to estimated 30000 ft (9100 m) altitude or flight level 300 and is moving at 10 kts in NE direction. The full report is as follows: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY to 30000 ft (9100 m)
Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 05 kts in E direction. The full report is as follows: VA TO FL150 REP FM GND AT 07/1220Z EST VA DTG:07/1310Z to 15000 ft (4600 m)
Dukono (Halmahera): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 10000 ft (3000 m) altitude or flight level 100 and is moving at 10 kts in E direction. The full report is as follows: VA TO FL100 OBS AT 07/1940Z, EXT E OBS VA DTG:07/1940Z to 10000 ft (3000 m)
Fuego (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ONGOING VA EMS
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: ONGOING VA EMS 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: VA CLDS OBSD to 15000 ft (4600 m)
Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: UNABLE TO DETECT
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report:
FVFE01 at 18:40 UTC, 07/04/26 from RJTD VA ADVISORY DTG: 20260407/1840Z VAAC: TOKYO VOLCANO: MAYON 273030 PSN: N1315 E12341 AREA: PHILIPPINES SOURCE ELEV: 2462M AMSL ADVISORY NR: 2026/454 INFO SOURCE: HIMAWARI-9 PHIVOLCS ERUPTION DETAILS: ERUPTION AT 20260407/1821Z VA CLD UNKNOWN REPORTED OBS VA DTG: 07/1820Z OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA WIND FL180 070/12KT
FCST VA CLD +6 HR: NOT AVBL FCST VA CLD +12 HR: NOT AVBL FCST VA CLD +18 HR: NOT AVBL RMK: WE WILL ISSUE FURTHER ADVISORY IF VA IS DETECTED IN SATELLITE IMAGERY. NXT ADVISORY: NO FURTHER ADVISORIES=
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report:
FVFE01 at 15:10 UTC, 07/04/26 from RJTD VA ADVISORY DTG: 20260407/1510Z VAAC: TOKYO VOLCANO: KANLAON 272020 PSN: N1025 E12308 AREA: PHILIPPINES SOURCE ELEV: 2435M AMSL ADVISORY NR: 2026/64 INFO SOURCE: HIMAWARI-9 PHIVOLCS ERUPTION DETAILS: ERUPTION AT 20260407/1453Z VA CLD UNKNOWN REPORTED OBS VA DTG: 07/1500Z OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA WIND FL180 060/15KT
FCST VA CLD +6 HR: NOT AVBL FCST VA CLD +12 HR: NOT AVBL FCST VA CLD +18 HR: NOT AVBL RMK: WE WILL ISSUE FURTHER ADVISORY IF VA IS DETECTED IN SATELLITE IMAGERY. NXT ADVISORY: NO FURTHER ADVISORIES=
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report:
FVFE01 at 10:35 UTC, 07/04/26 from RJTD VA ADVISORY DTG: 20260407/1035Z VAAC: TOKYO VOLCANO: MAYON 273030 PSN: N1315 E12341 AREA: PHILIPPINES SOURCE ELEV: 2462M AMSL ADVISORY NR: 2026/452 INFO SOURCE: HIMAWARI-9 PHIVOLCS ERUPTION DETAILS: ERUPTION AT 20260407/1017Z VA CLD UNKNOWN REPORTED OBS VA DTG: 07/1020Z OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA WIND FL180 060/10KT
FCST VA CLD +6 HR: NOT AVBL FCST VA CLD +12 HR: NOT AVBL FCST VA CLD +18 HR: NOT AVBL RMK: WE WILL ISSUE FURTHER ADVISORY IF VA IS DETECTED IN SATELLITE IMAGERY. NXT ADVISORY: NO FURTHER ADVISORIES=
