Alaska’s Mount Spurr, a volcano about 80 miles away from the state’s largest city, will “likely” erupt in the coming weeks or months for the first time in over 30 years,

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.”