Volcano news: Colima Volcano (Mexico)
Discrete small to moderately sized ash eruptions continue to occur typically every few hours at Colima volcano. Ash plumes reach altitudes of up to 5-7 km.
Based on reports from the Mexico City MWO and satellite imagery, the Washington VAAC reported that an eruption plume from Colima on 6 November reached an altitude of 6.1 km (20,000 ft) a.s.l. and drifted NE.
Colima continues to erupt ash from time to time. The highest ash plume during the past week reached ~7.9 km (26,000 ft) a.s.l. after an eruption on 2 April at 10h52 local time.
Colima continues its mild activity with occasional ash emissions (a few per day); the highest plume during the past week reached 6.1 km (20,000 ft) a.s.l. on the 26th of March 2006.
No significant changes have occurred at Colima volcano. It remains active at low levels, producing typically 3-5 small explosive events per day.
During the past weeks and months, small to moderate explosions continue to occur at Colima from time to time. The highest resultant ash plumes reached about 9 km (28,000 ft) a.s.l.
Background:Colima volcano is one of the most active in North America and one of the potentially most dangerous ones. It has had more than 30 periods of eruptions since 1585, including several significant eruptions in the late 1990s. Scientific monitoring of the volcano began 20 years ago.
The Colima volcanic complex is the most prominent volcanic center of the western Mexican Volcanic Belt. It consists of two southward-younging volcanoes, Nevado de Colima (the 4320 m high point of the complex) on the north and the 3850-m-high historically active Volcán de Colima at the south.
A group of cinder cones of probable late-Pleistocene age is located on the floor of the Colima graben west and east of the Colima complex. Volcán de Colima (also known as Volcán Fuego) is a youthful stratovolcano constructed within a 5-km-wide caldera, breached to the south, that has been the source of large debris avalanches. Major slope failures have occurred repeatedly from both the Nevado and Colima cones, and have produced a thick apron of debris-avalanche deposits on three sides of the complex. Frequent historical eruptions date back to the 16th century. Occasional major explosive eruptions (most recently in 1913) have destroyed the summit and left a deep, steep-sided crater that was slowly refilled and then overtopped by lava dome growth.
Source: GVP, Smithsonian Institute - Colima information