Updates on volcanic activity (Smithsonian)
The Smithsonian/USGS Weekly Volcanic Activity Report provides information about global volcanism on a weekly basis. Latest Semeru report has been published on 04 Mar 2020 07:10.
PVMBG reported that during February and 1-2 March gray eruptive plumes rose 200-500 m above Semeru?s summit. Beginning on 26 February incandescent material was ejected 10-50 m above the Jonggring-Seloko Crater, and by 2 March lava flows had traveled 500-1,000 m down the Kembar, Bang, and Kobokan drainages (on the S flank). The Alert Level remained at 2 (on a scale of 1-4), and the public was reminded to stay outside of the general 1-km radius from the summit and 4 km on the SSE flank.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
See the detail here