| 11 December 2001 | Founding meeting at AGU Fall Meeting in San Francisco |
| 23 January 2002 | Charter codified; CUSVO formally established |
| 20 May 2002 | Meeting at Cascades Volcano Observatory (CVO) in Vancouver, Washington |
| 10 December 2002 | Informal evening meeting at AGU Fall Meeting in San Francisco |
| 13-14 May 2004 | Meeting at CVO |
| 10 August 2004 | Meeting at CVO |
| 15 December 2004 | Meeting at AGU Fall Meeting in San Francisco |
| 28 April 2005 | Publication of USGS Open-File Report 2005-1164 on NVEWS Assessment and Framework |
| 3-4 August 2005 | Meeting at USGS in Menlo Park, California |
| 8 November 2005 | Meeting in Salt Lake City, Utah |
| 22-23 February 2006 | NVEWS Stakeholders Workshop in Portland Oregon, convened by USGS Volcano Hazards Program and CUSVO |
| 24 February 2006 | Meeting at CVO |
| 11-12 May 2006 | Meeting at USGS in Menlo Park, California |
Consortium of US Volcano Observatories - Alaska, Cascades, Hawaii, Long Valley, Yellowstone