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 30 Nov 2022 08:08.
PVMBG reported that the eruption at Semeru continued during 23-29 November. Daily explosions at the summit produced ash plumes that varied in color and density, which generally rose 500-700 m above the summit and drifted in various directions. A dense gray ash plume at 0002 on 23 November rose 700 m and drifted SE and S, at 0507 and 0540 on 24 November white-to-gray and dense gray ash plumes, respectively, rose 500 m and drifted N, at 0702 on 25 November a dense gray ash plume rose 500 m and drifted NE, at 0444 on 26 November an ash plume rose 700 m and drifted S, at 0552 on 27 November a white-to-gray ash plume rose 500 m and drifted S, at 0556 on 28 November a dense gray ash plume rose 500 m and drifted N, that same day at 0611 a dense gray ash plume rose possibly higher than 1 km, and at 0509 on 29 November a white-and-gray ash plume rose 600 m and drifted N. The Alert Level remained at 3 (on a scale of 1-4). The public was warned to stay at least 5 km away from the summit, and 500 m from Kobokan drainages within 17 km of the summit, along with other drainages originating on Semeru, including the Bang, Kembar, and Sat, due to lahar, avalanche, and pyroclastic flow hazards.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
See the detail here
