Sinabung , Indonesia : lava flows on the flanks were incandescent.

Sinabung , Indonesia : lava flows on the flanks were incandescent.

PVMBG reported that during 31 July-10 August foggy weather sometimes prevented visual observations of Sinabung and the growing lava dome in the summit crater. White plumes rose as high as 500 m above the crater, and  as far as 2 km S to SE. The occurrence of pyroclastic flows per day ranged from one to seven, although none were noted on 8 August. The pyroclastic flows traveled as far as 4 km E to SE and generated ash plumes that rose as high as 3 km.

Seismicity consisted of avalanche signals, low-frequency and hybrid events, tremor, tectonic events, and volcanic earthquakes; RSAM values increased due to an increase of avalanche signals. Based on information from PVMBG, the Darwin VAAC reported that on 13 August a pyroclastic flow generated an ash plume that rose 1 km above the crater. A thermal anomaly was visible in satellite images. 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.

August 21 , 2015. Sinabung , Indonesia :

3.17°N, 98.392°E

Elevation : 2460 m

Sources: Pusat Vulkanologi dan Mitigasi Bencana Geologi , Darwin Volcanic Ash Advisory Centre (VAAC) , GVP

Photos : Sadrah Peranginangin

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