Elevated Volcanic Activity and Information Releases

Monday, Apr 20, 2015 at 19:57:37 PDT.

The following U.S. volcanoes are known to be above normal background (elevated unrest or eruptions) or have shown activity that warranted an Information Release (for example, an earthquake swarm).
Times are local to the volcano and in military format.
Volcano Alert Levels & Aviation Color Codes defined at http://volcanoes.usgs.gov/activity/alertsystem.