3D view of Axial Seamount, 300 miles off the coast of Oregon and Washington.
An eruption appears to have started at Axial Seamount on April 24. The eruption was forecast in September 2014 to occur by the end of 2015, based on seafloor pressure measurements. Axial Seamount is the most active submarine volcano in the NE Pacific and the site of the new OOI cabled observatory. More information on the eruption forecast is HERE, and live data from the seafloor is displayed HERE.