All volcanoes in the Cascade Range of Oregon and Washington are at normal background levels of seismicity. These include Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams in Washington State; and Mount Hood, Mount Jefferson, Three Sisters, Newberry, and Crater Lake in Oregon. Additionally, GPS data from most of the major volcanoes, and sparse real-time hydrologic and geochemical monitoring, show no anomalous activity.
Monitoring systems show that activity at Cascade Range volcanoes remains at background levels. Field crews have been conducting campaign deformation studies at Mount Hood and geological investigations at Glacier Peak and Mount Jefferson.
August 13, 2015. Chaine Des Cascades , Etats-Unis :
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Source : CVO
Photo : Wikimedia.