Sinabung volcano (Sumatra): eruption news and activity updates
Sinabung volcano (Sumatra, Indonesia): activity summary 8-21 Sep 2015
PVMBG reported that during 8-14 September foggy weather sometimes prevented visual observations of Sinabung and the growing lava dome in the summit crater.
wo, 23 sep 2015, 11:0511:05 AM | DOOR: T
Lava flows on the flanks were incandescent as far as 2 km ESE. As many as six pyroclastic flows per day were detected, traveling as far as 3.5 km ESE and SE. Ash plumes rose as high as 2.5 km.
Seismicity consisted of avalanche signals, low-frequency and hybrid events, tremor, tectonic events, and volcanic earthquakes. Seismicity fluctuated, although it had declined compared to the previous week. Deformation measurements showed deflation.
The Alert Level remained at 4 (on a scale of 1-4), indicating that people within 7 km of the volcano on the SSE sector, and within 6 km in the ESE sector, should evacuate. Based on information from PVMBG, the Darwin VAAC reported that on 18 September an ash plume from a pyroclastic flow rose to an altitude of 3.3 km (11,000 ft) a.s.l.
On 21 September an ash plume rose to an altitude of 4.3 km (14,000 ft) a.s.l. and drifted SW. Later that day a pilot observed an ash plume drifting 45 km SW at an altitude of 5.8 km (19,000 ft) a.s.l.
Mon, 21 Sep 2015, 07:08
Sinabung volcano (Sumatra, Indonesia) update: increased instability of lava dome triggers pyroclastic flows
Several pyroclastic flows, some relatively large, have occurred over the past days. While the slow effusive activity itself has not significantly changes, the lava dome and its viscous lava lobes that spilled over onto the steep upper flanks are now undergoing a phase of increased collapses due to increased instability. ... Lees alle
Tue, 15 Sep 2015, 07:50
A moderately large pyroclastic flow occurred this morning (08:22 local time) at the volcano. The associated ash plume rose to 18,000 ft (5.4 km) altitude. Lees alle
Mon, 24 Aug 2015, 08:41
Small pyroclastic flows were observed during the past days, mostly originating from the active eastern lava lobe. ... Lees alle
Fri, 21 Aug 2015, 09:10
An explosion from the summit dome occurred yesterday morning, producing a plume that rose approx. 2 km. Lees alle
Tue, 11 Aug 2015, 09:48
According to a news article in the Indonesian press, volcanologists monitoring Sinabung believe that magma supply to the growing lava dome has recently increased. ... Lees alle