News from Galeras volcano:
Galeras volcano started erupting on the morning of Thanksgiving Day (Thursday 24th of Nov. 2005) with a moderate (phreatic?) ash eruption that lasted 30 minutes and produced heavy ash falls on the city of Pasto, about 18 km (12 miles) away. There were no seismic precursors according to Colombia's Volcanology Institute.
Galeras volcano, 330 miles (ca. 500 km) southwest of Bogota, is emitting dense plumes of steam and producing characteristic volcanic tremors (so-called tornillos), making an impending eruption likely. 9000 people have been ordered to evacuate their homes, many of them refusing to leave.
On 15 of Nov., Colombian authorities on Tuesday began evacuating 7,500 people living on the slopes of a volcano in southwest Colombia over concerns it is about to erupt. Although the warning remains at Level 2, Roberto Torres, a geologist at Colombia's Geology and Mines Institute. said government officials ordered the evacuation as a precaution.
"Dozens of small earthquakes near a volcano in southwest Colombia were raising concerns Sunday of a possible eruption. More than 30 temblors have occurred within 10 kilometers (6.2 miles) of the Galeras volcano beginning Saturday Aug. 20, geologist Roberto Torres said. Several had a magnitude near 5 and seven were strong enough to be felt by people."
Galeras volcano is an active "4270-m high andesitic stratovolcano in the southwestern Colombia near the border to Ecuador" whose activity in May 2005 prompted the Colombia government to evacuate the area.
Abbreviated from the GVP/USGS Weekly Volcanic Activity Report, 1-7 June 2005:
Columbian authorities have ordered the evacuation of 9000 people living on the slopes of Galeras volcano near the border with Ecuador, after monitoring scientists warned of that the volcano might erupt again soon.
Galeras last had a minor eruption November 2004, wich caused little effect on the surrounding populations. In 1993, a small eruption inside the crater had made Galera infamous, because it killed 10 scientists who had climbed up to its crater and were surprised by the eruption during their stay.