Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 12000 ft (3700 m) altitude or flight level 120 . The full report is as follows: FVXX21 at 23:25 UTC, 18/01/19 from KNES VA ADVISORY DTG: 20190118/2316Z VAAC: WASHINGTON VOLCANO: TURRIALBA 345070 PSN: N1001 W08346 AREA: COSTA_RICA SUMMIT ELEV: 10958 FT [3340…