Marapi volcano (Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 April-24 April 2001 (New Activity / Unrest)
Based on information from VSI, the Darwin VAAC reported that after increased volcanic activity occurred over the preceding two weeks VSI raised the Alert Level at Marapi from 1 to 2. The increased activity included an eruption on 16 April that sent an ash cloud up to 2 km above the summit. In addition, an eruption on about 23 April produced an ash cloud that rose up to ~6 km a.s.l. and drifted to the E.
Wed, 18 Apr 2001, 06:0006:00 AM | BY: VN
Sources: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Darwin Volcanic Ash Advisory Centre (VAAC)
From: Global Volcanism Program, 2001. Report on Marapi. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 18 April-24 April 2001. Smithsonian Institution and US Geological Survey.