Galeras, Colombia

On 24 March, INGEOMINAS lowered the Alert Level for Galeras to III (Yellow; “changes in the behavior of volcanic activity”). During the previous week daily sulfur dioxide levels were high. Earthquake levels were low in both intensity and occurrence. During 21-23 March, white-colored gas plumes rose to an altitude of 5.4 km (17,700 ft) a.s.l. [...]

Galeras, Colombia

INGEOMINAS reported an explosive eruption from Galeras that began at 1555 on 13 March; the Alert Level was raised from II (Orange; “probable eruption in term of days or weeks”) to I (Red; “imminent eruption or in progress”), on a scale of 4-1. Inclement weather prevented direct observations of the volcano. The Washington Volcanic Ash [...]

Galeras, Colombia

INGEOMINAS reported that on several occasions during 25 February-2 March white gas plumes from Galeras with variable ash content rose to a peak altitude of 5.4 km (17,700 ft) a.s.l. and drifted NNW. On 3 March, the Alert Level was lowered from II (Orange; “probable eruption in term of days or weeks”) to III (Yellow; [...]

Galeras, Colombia

INGEOMINAS reported an explosive eruption from Galeras that began at 0705 on 20 February; the Alert Level was raised from II (Orange; “probable eruption in term of days or weeks”) to I (Red; “imminent eruption or in progress”), on a scale of 4-1. The eruption was accompanied by shock waves detected in several local communities [...]

Galeras, Colombia

INGEOMINAS reported an explosive eruption from Galeras that began at 1910 on 14 February; the Alert Level was raised from III (Yellow; “changes in the behavior of volcanic activity”) to I (Red; “imminent eruption or in progress”), on a scale of 4-1. An accompanying shock wave was detected in multiple areas, including in parts of [...]

Galeras, Colombia

INGEOMINAS reported that thermal images of the lava dome in Galeras’s crater were taken during an overflight on 11 December. The images revealed temperatures as hot as 530 degrees Celsius on the N side of the dome and temperatures near 80 degrees Celsius on the W side. Temperatures had declined compared to thermal images taken [...]

Galeras, Colombia

On 11 November, INGEOMINAS reported that during the previous week pulsating white plumes, occasionally tinged gray, rose from Galeras to altitudes of 4.5-5.7 km (14,800-18,700 ft) a.s.l. and drifted W.
Source: Instituto Colombiano de Geología y Minería – “Report provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”
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Galeras, Colombia

INGEOMINAS reported that an ash-and-gas plume from Galeras rose to an altitude of 4.9 km (16,100 ft) a.s.l. and drifted NW on 31 December. The emission was associated with an episode of spasmodic tremor. Another plume rose to an altitude of 4.5 km (14,800 ft) a.s.l. and drifted S.
Source: Instituto Colombiano de Geología y Minería [...]

Galeras, Colombia

Based on visual observations during clear weather, INGEOMINAS reported that steam-and-gas plumes from Galeras rose to a maximum altitude of 5.3 km (17,400 ft) a.s.l. during 21-23 November and 3 December. The plumes occasionally contained small volumes of ash and were associated with seismic tremor. Gas and ash plumes that rose to an altitude of [...]