US Volcano-Warnings

Partnerships between universities, federal and state agencies form the US volcano observatories. In October 2006 they adopted a common system nationwide for characterizing the level of unrest and eruptive activity at volcanoes. This system includes levels indicating both the eruptive state of a volcano and its potential hazard to aircraft. (Updated 8th Aug 2008)

KML created by John Bailey (ARSC/AVO)