Sinabung volcano (Sumatra, Indonesia): incandescent avalanches
Mon, 15 Feb 2021, 10:58
10:58 AM | BY: MARTIN
Incandescent avalanches from Sinabung volcano (image: @Rizal06691023/twitter)
The extrusive actively lava dome continues to grow at moderate to high levels triggering the incandescent avalanches (block-and-ash flows) caused by gravitational collapse of the lava dome that traveled over the E-SE and S slopes about 500 m-1,500 m distance from the summit. Collapsing parts of the flow generated a small avalanches that lifted ash plumes (so-called phoenix clouds) as it descended the slope.
Emissions of water vapor and gases rose 164 ft-984 ft (50 m-300 m) above the summit and drifted into various directions, but most often E-SE direction.
The warning bulletin states that ballistic impacts of volcanic bombs and pyroclastic flows could affect an area of about 3 km distance from the main crater and 5 km on the SE flank and 4 km on the NE flank.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi volcano activity update 15 February 2021
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