The Alaska Volcano Observatory said signs indicated a Mount Spurr eruption was likely, though not certain, in the weeks or months ahead.

“It is also possible that an eruption could occur with little or no additional warning,” the Alaska Volcano Observatory stated. “This would be extremely hazardous for recreators on Mount Spurr or near its drainages as well as those overflying the volcano.”

A volcano near Anchorage, Alaska's largest city, could erupt in the 'next few weeks or months,' the Alaska Volcano Observatory (AVO) has shared in a release.