Nevado del Ruiz volcano news & activity updates
Nevado del Ruiz volcano (Colombia): activity increases, new ash emissions
Mon, 21 Sep 2015, 06:4306:43 AM | BY: T
The internal and external activity of the volcano has increased during the past two weeks. Several pulses of tremor were accompanied by ash emissions that produced plumes that rose up to 1.5 2.5 km above the crater, last on 17 and 19 Sep. As fall occurred in areas west of the volcano including Pereira, Dosquebradas, Santa Rosa, Chinchiná, Villamaría, and Manizales.
Ash emission from Ruiz on Saturday (19 Sep 2015)
Weak incandescence, probably due to hot gasses, has been noted from the Arenas crater at night since early Sep. A small explosion on 4 Sep produced incandescent ejecta. At the moment, it is unclear whether fresh magma has been involved in the recent activity or whether it is phreatic in origin, i.e. caused by overheated water circulating in the volcano's upper hydrothermal system.
Tue, 15 Sep 2015, 11:05
The Servicio Geológico Colombiano (SGC) Observatorio Vulcanológico y Sismológico de Manizales reported continuing volcanic tremor at Nevado del Ruiz associated with gas-and-ash emissions. read all
Mon, 31 Aug 2015, 16:29
A phase of ash emissions occurred early today at the volcano. A strong pulse of volcanic tremor started at 03:21 local time. read all
Sat, 8 Aug 2015, 16:17
Sporadic ash emissions continue to occur from time to time at the volcano. A tremor episode on 6 August that started at 08:39 local time and lasted a few minutes was accompanied by the expulsion of ash that rose approx. 700 m. read all
Wed, 22 Jul 2015, 13:47
Intermittent ash emissions began to occur at the volcano again since 13 July. The volcano observatory of Manizales reports increased seismic activity, related to internal fluid movements and rock fracturing processes. ... read all
Wed, 10 Jun 2015, 11:05
Washington VAAC reported that on 6 June an ash emission from Nevado del Ruiz rose 800 m above the summit and drifted WNW. ... read all