Volcanos

Roundup of Global Volcanic Activity - New Activity for the week of 26 October-1 November 2016

Ulawun | New Britain (Papua New Guinea) : Based on analyses of satellite imagery, the Darwin VAAC reported that during 26-28 October ash plumes from Ulawun rose to altitudes of 2.4-3 km (8,000-10,000 ft) a.s.l. and drifted NW, W, and NE.

Merapi | Central Java (Indonesia) : BNPB reported that a lahar induced by moderate to heavy rain swept nine sand mining trucks down the Bebeng River on Merapi's SW flank; at least one truck was buried and six were severely damaged. There were no fatalities as the miners and other people at the scene escaped. Material at the summit and on the flanks produced during the October-November 2010 eruption was an estimated 20-25 million cubic meters, contributing to the continuing high potential of lahars during heavy rain. BNPB recommended that the public remain vigilant during rainy weather because a lahar formed on the upper flanks of Merapi can reach the bottom in less than 30 minutes. The Alert Level remained at 1 (on a scale of 1-4).

Copahue | Central Chile-Argentina border : Based on satellite and webcam images, the Buenos Aires VAAC reported that during 27-30 October gas and water vapor plumes with minor ash content remained near Copahue's summit. The plumes drifted NE on 27 October and E on 30 October.

Cleveland | Chuginadak Island (USA) : On 31 October AVO reported that satellite views of Cleveland late in the last week indicated that the 24 October explosion destroyed most of the previous lava dome, leaving a deep crater. Darkened areas around the summit region in post-explosion web camera images were interpreted as minor ash deposits from the explosion. Unrest continued during 26 October-1 November; clouds often obscured views of the volcano. The Level of Concern Color Code remained at Orange and the Volcano Alert Level remained at Watch.