Mount Spurr near Anchorage is emitting dangerous gases and experiencing unrest, signs that it is likely to erupt in coming weeks or months.

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

A volcano near Alaska’s largest city is showing new signs of unrest, with experts saying the likelihood of an eruption at Mount Spurr in the next few weeks or months has increased.