The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.
Updated by 2300 UTC every Wednesday, notices of volcanic activity posted on these pages  are preliminary and subject to change as events are studied in more detail. This is not a comprehensive list of all of Earth’s  volcanoes erupting during the week, but rather a summary of activity at volcanoes that meet criteria discussed in detail in the “Criteria and Disclaimers” section. Carefully reviewed, detailed reports on various volcanoes are published monthly in the Bulletin of the Global Volcanism Network.

New Activity or Unrest

to read more, go to:    http://earthquake-report.com/2011/06/23/active-volcanoes-in-the-world-from-15062011-to-21062011/