Nevado Del Huila, Colombia

INGEOMINAS reported that no significant morphological changes to the summit of Nevado del Huila were noted during an overflight on 6 May, although the NE and NW flanks could not be directly observed. Fumarolic plumes drifted NW. The Alert Level was lowered to Yellow (on a 4-color scale where Yellow is the second lowest).
Sources: Instituto [...]

Nevado Del Huila, Colombia

Seismicity from Nevado del Huila increased during 9-12 April then again on 13 April, prompting INGEOMINAS to raise the Alert Level to Orange (the second highest level on a 4-color scale). During 13-14 April, seismic signals possibly indicated an eruption. According to news articles, authorities ordered about 15,000 people to evacuate. On 14 April at [...]

Nevado Del Huila, Colombia

INGEOMINAS reported that seismic tremor from Nevado del Huila increased during 18-25 March. Residents reported noises, the odor of sulfur, and small ash plumes. Seismicity increased again on 29 March; INGEOMINAS raised the Alert Level to Orange (on a 4-color scale, Orange is second highest).
Source: Instituto Colombiano de Geología y Minería (INGEOMINAS) - “Reports provided [...]

Nevado Del Huila, Colombia

INGEOMINAS reported that seismic tremor from Nevado del Huila on 2 March was possibly associated with ash emission. Based on a Bogota SIGMET, the Washington VAAC reported that an ash plume rose to an altitude of 7.6 km (25,000 ft) a.s.l. the same day.
Sources: Instituto Colombiano de Geología y Minería (INGEOMINAS), Washington Volcanic Ash Advisory [...]

Nevado Del Huila, Colombia

INGEOMINAS reported that sulfur dioxide plumes from Nevado del Huila drifted NW on 8 and 12 February.
Source: Instituto Colombiano de Geología y Minería (INGEOMINAS) - “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”