Sinabung volcano (Sumatra): eruption news and activity updates
Sinabung volcano (Sumatra, Indonesia): activity summary 21-28 Sep 2015
Thursday Oct 08, 2015 11:05 AM | BY: T
PVMBG reported that during 21-28 September foggy weather sometimes prevented visual observations of Sinabung and the growing lava dome in the summit crater. Lava flows on the flanks were incandescent as far as 3 km E to SE. As many as five pyroclastic flows per day were detected, traveling as far as 4 km ESE. Ash plumes rose as high as 4.5 km.
Seismicity consisted of avalanche signals, low-frequency and hybrid events, tremor, tectonic events, and volcanic earthquakes. Seismicity fluctuated at high levels, although it had declined compared to the previous week. 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.
Wednesday, Sep 23, 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. ... [more]
Sinabung volcano (Sumatra, Indonesia) update: increased instability of lava dome triggers pyroclastic flows
Monday, Sep 21, 2015
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. [more]
Tuesday, Sep 15, 2015
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. ... [more]
Monday, Aug 24, 2015
Small pyroclastic flows were observed during the past days, mostly originating from the active eastern lava lobe. ... [more]
Friday, Aug 21, 2015
An explosion from the summit dome occurred yesterday morning, producing a plume that rose approx. 2 km. ... [more]