Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report:
FVFE01 at 11:59 UTC, 13/03/21 from RJTD
VA ADVISORY
DTG: 20210313/1159Z
VAAC: TOKYO
VOLCANO: SAKURAJIMA [AIRA CALDERA] 282080
PSN: N3136 E13039
AREA: JAPAN
SUMMIT ELEV: 1117M
ADVISORY NR: 2021/159
INFO SOURCE: HIMAWARI-8 JMA
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: EXPLODED AT 20210313/1151Z FL090 EXTD S