Ten months of unrest at Mount Spurr could be a sign of an upcoming eruption from a side vent or, less likely, from the main crater.
Mount Spurr last erupted in 1992, blowing a nearly 12-mile (19km) ash cloud into the air, cancelling flights and forcing people in Anchorage to wear masks. Another eruption at the 11,100ft (3,383m ...
Mount Spurr, whose volcanic ash darkened Anchorage’s skies in 1953 and 1992, may be building toward another eruption, according to a statement issued Thursday by the Alaska Volcano Observatory.