Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 18000 ft (5500 m) altitude or flight level 180 and is moving at 25 kts in NE direction. The full report is as follows: FVFE01 at 20:53 UTC, 03/01/19 from RJTD VA ADVISORY DTG: 20190103/2053Z VAAC: TOKYO VOLCANO: SHEVELUCH 300270 PSN: N5639 E16122 AREA: RUSSIA SUMMIT…