Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report:
FVFE01 at 09:28 UTC, 08/04/26 from RJTD VA ADVISORY DTG: 20260408/0928Z VAAC: TOKYO VOLCANO: MAYON 273030 PSN: N1315 E12341 AREA: PHILIPPINES SOURCE ELEV: 2462M AMSL ADVISORY NR: 2026/458 INFO SOURCE: HIMAWARI-9 PHIVOLCS ERUPTION DETAILS: ERUPTION AT 20260408/0915Z FL100 EXTD WSW REPORTED OBS VA DTG: 08/0910Z OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA WIND FL100 070/10KT
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=
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 . The full report is as follows:
FVAU03 at 04:19 UTC, 08/04/26 from ADRM VA ADVISORY DTG: 20260408/0419Z VAAC: DARWIN VOLCANO: DUKONO 268010 PSN: N0142 E12754 AREA: INDONESIA SOURCE ELEV: 1229M AMSL ADVISORY NR: 2026/90 INFO SOURCE: HIMAWARI-9, CVGHM ERUPTION DETAILS: VA TO FL100 OBS AT 08/0340Z, EXT E OBS VA DTG: 08/0350Z OBS VA CLD: SFC/FL100 N0147 E12754 – N0135 E12840 – N0137 E12933 – N0109 E12932 – N0105 E12823 – N0141 E12749 MOV E 10KT FCST VA CLD +6 HR: 08/0950Z SFC/FL100 N0141 E12749 – N0147 E12754 – N0133 E12933 – N0107 E12933 – N0044 E12905 – N0102 E12817 FCST VA CLD +12 HR: 08/1550Z SFC/FL100 N0146 E12752 – N0133 E12933 – N0107 E12933 – N0044 E12905 – N0101 E12818 – N0142 E12749 FCST VA CLD +18 HR: 08/2150Z SFC/FL100 N0142 E12749 – N0147 E12752 – N0139 E12934 – N0107 E12933 – N0044 E12905 – N0101 E12818 RMK: VA PARTIALLY DISCERNIBLE ON LATEST SATELLITE IMAGERY. VA HEIGHT AND FORECAST BASED ON SAT IMAGERY AND MODEL GUIDANCE. ADVISORY UPDATED EARLY DUE TO VA EXTENDING FURTHER EAST THAN PREVIOUSLY FORECAST. NXT ADVISORY: NO LATER THAN 20260408/1019Z=
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=
