Sinabung volcano (Sumatra): eruption news and activity updates
Sinabung volcano (Sumatra, Indonesia): elevated activity, frequent pyroclastic flows
Tuesday Nov 01, 2016 16:20 PM | DOOR: T
Front of a moderately large pyroclastic flow at Sinabung this morning (image: PVMBG / facebook)
The new lava lobe at Sinabung on 24 Oct 2016 (image: Endro Lewa / facebook)
The eruption of the volcano continues, but has again entered a phase of increased activity since a few days ago: a new lava lobe, which has been growing since around 20 October, is now being destroyed by an ongoing series of frequent small to moderate pyroclastic flows that affect the southeastern and eastern slopes.
Vertical explosion at Sinabung on 24 Oct 2016 (image: PVMBG)
At the same time, the volcano has been producing sometimes comparably strong vertical explosions. This suggests that the internal supply of fresh and gas-rich magma is currently elevated (compared to the average of the past months when the volcano was mostly calmer.
During a 6 hours interval this afternoon, the volcano observatory reported one explosion and 7 pyroclastic flows on the east-southeastern flank with run-out lengths of 1500-3500 m, and associated ash plumes rising 800-1500 m high. The larger of the pyroclastic flows are coming dangerously close to, and again threatening areas which have still been being used and visited by local farmers and others (despite being well inside the official exclusion zone). It can only be hoped that no new accidents occur.
Despite the current increase in activity, it should be noted that the type of internal activity in itself has not changed significantly: the extrusion of viscous lava has been continuing at fluctuating, but overall slow pace for more than 3 years.
With every surge of magma, the extruded lava accumulates in the volcano's summit crater and forms thick lobes on the southeastern upper flank. From time to time, these masses become unstable and start to crumble away, causing avalanches and / or pyroclastic flows.
The alert level of the volcano remains at the highest level 4 ("siaga") on the Indonesian 1-4 scale.
Tuesday, Nov 01, 2016
Sinabung volcano Volcanic Ash Advisory: VA REPORTED TO FL110 EXT TO NE AT 0133Z OBS VA DTG: 31/0215Z
Monday, Oct 31, 2016
Friday, Oct 28, 2016
Wednesday, Oct 26, 2016