Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 17000 ft (5200 m) altitude or flight level 170 and is moving at 10 kts in NE direction. The full report is as follows: FVFE01 at 04:01 UTC, 12/04/19 from RJTD VA ADVISORY DTG: 20190412/0400Z VAAC: TOKYO VOLCANO: KLYUCHEVSKOY 300260 PSN: N5603 E16039 AREA: RUSSIA…