Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 21000 ft (6400 m) altitude or flight level 210 . The full report is as follows: FVXX20 at 20:28 UTC, 21/05/19 from KNES VA ADVISORY DTG: 20190521/2024Z VAAC: WASHINGTON VOLCANO: SANGAY 352090 PSN: S0200 W07820 AREA: ECUADOR SUMMIT ELEV: 17159 FT [5230 M] …