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More on yesterday’s Galeras eruption 9 June 2009

Posted by admin in activity reports, Colombia, eruptions, Galeras.
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The Colombian volcano Galeras erupted explosively yesterday, the second eruption within 24 hours. The INGEOMINAS Observatorio Vulcanológico y Sismológico de Pasto issued a bulletin giving more details on the eruption at 19:40 local time yesterday, providing the following information:

  • The eruptive event of 8 June 2009 consisted of two explosive phases, the first at 06:38 and the second at 06:45.
  • The beginning of the eruption was accompanied by a magnitude 3.9 earthquake ~1 km east of the main crater of Galeras and ~2 km below the summit.
  • Ashfall occurred to the north-west of the volcano at distances of up to 180 km from the crater, and the ash column produced by the eruption reached an altitude of between 9 and 10 km above the summit of Galeras, according to Washington VAAC.
  • This eruption was similar in energy levels to the event of 24 April 2009.
  • Since the eruption levels of seismicity and of SO2 flux have declined.

The Colombian newspaper La Patria reports that the red alert remains in place at Galeras following the eruptions, and notes that only 35 people have evacuated the area around the volcano. The evacuation orders currently in force potentially affect around 7000 people.

For all our Galeras coverage: Galeras « The Volcanism Blog.

News
Se mantiene alerta roja en el GalerasLa Patria, 9 June 2009
El volcán Galeras erupcionó dos veces másEl País, 9 June 2009
Galeras volcano erupts for 2nd time in 24 hours – Colombia Reports, 8 June 2009
Second eruption rattles Colombia’s Galeras volcano – Reuters, 8 June 2009

Information
Global Volcanism Program – Galeras – summary information for Galeras (1501-08=)
Portal Corporativo de INGEOMINAS – Instituto Colombiano de Geología y Minería
Observatorio Vulcanológico y Sismológico de Pasto – Pasto volcanological observatory main page

The Volcanism Blog