[UPDATE] At 12.00 WIB, Mount Semeru's status rose to Level IV (Caution), from previously Level III (Alert).

It is advised not to move within a radius of 8 km from the summit, and sectoral to the southeast (Besuk Kobokai and Kali Lanang) as far as 19 km from the summit.
#KLHK

*absolutely amazing video of a Pyroclastic Density Current (PDC)

https://twitter.com/KementerianLHK/status/1599303024111157248