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  • RSS SI / USGS Weekly Volcanic Activity Report

    • Soufrière Hills (United Kingdom) - Report for 25 August-31 August 2010
      MVO reported that most of the rockfalls and pyroclastic flows detected during 20-27 August originated from a vertical face on the SE side of the lava dome and traveled W down Gages valley and E down the Tar River valley. The pyroclastic flows traveled no longer than 1.5 km and produced weakly convecting ash clouds that rose a few hundred meters. The Hazard L […]
    • Galeras (Colombia) - Report for 25 August-31 August 2010 - NEW
      An eruption from Galeras that began at 0400 on 25 August prompted INGEOMINAS to raise the Alert Level to I (Red; "imminent eruption or in progress"). Meteorological cloud cover initially prevented visual observations of the summit. Seismicity associated with the eruption continued for a period of about 12 hours and gradually declined in the afterno […]