Volcanos

Roundup of Global Volcanic Activity - Ongoing activity for the week of 16 November-22 November 2016

Sangay | Ecuador : Based on satellite images and wind data, the Washington VAAC reported that during 16-17 November ash plumes from Sangay rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted as far as 290 km SE.

Sheveluch | Central Kamchatka (Russia) : KVERT reported that during 11-18 November lava-dome extrusion onto Sheveluch’s N flank was accompanied by strong fumarolic activity, dome incandescence, ash explosions with ash plumes as high as 6 km (19,700 ft) a.s.l., and hot avalanches. Satellite images showed a daily thermal anomaly over the dome, and ash plumes that drifted as far as 170 km E on 12 and 15 November. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Sinabung | Indonesia : Based on satellite images, wind data, ground reports from PVMBG, and the Jakarta MWO, the Darwin VAAC reported that on 20 November ash plumes from Sinabung rose to altitudes of 3.3-3.9 km (11,000-13,000 ft) a.s.l. and drifted E.

Suwanosejima | Ryukyu Islands (Japan) : Based on JMA notices and satellite-image analyses, the Tokyo VAAC reported that during 16-17 November explosions at Suwanosejima generated ash plumes that rose to an altitude over 1.2 km (4,000 ft) a.s.l. and drifted S. During 20-21 November ash plumes rose to an altitude of 1.8 km (6,000 ft) a.s.l. and drifted E.

Turrialba | Costa Rica : OVSICORI-UNA reported that tremor and ash emissions at Turrialba ceased on 17 November. Tremor amplitude increased at 0140 on 19 November, though weather clouds prevented visual confirmation of correlating emissions. By 0800 tremor amplitude was low and some long-period events were recorded. Low emissions were mostly white, indicating gas, water vapor, and minor amounts of ash. A small quantity of ash fell in Cartago and Paraíso de Cartago (25 km SW). Tremor amplitude remained low on 20 November. A thin layer of ash deposits were reported in Ipis de Goicoechea, 27 km SW of the crater.

Ulawun | New Britian (Papua New Guinea) : Based on analyses of satellite imagery, the Darwin VAAC reported that during 16-18 November ash plumes from Ulawun rose to altitudes of 2.7-3 km (9,000-10,000 ft) a.s.l. and drifted over 30 km SE, SW, and W.