Dukono (Halmahera): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 and is moving at 5 kts in SW direction. The full report is as follows: CONTINUOUS VA EMISSION TO FL070 OBS VA DTG:26/1715Z to 7000 ft (2100 m) …26 May: Explosive activity continues. Volcanic Ash…