Gas emissions, earthquakes, and ground deformations. These are all signs that a volcano is about to erupt, and they are also all signs that have appeared at Mount Spurr, an active volcano in southcentral Alaska, around 80 miles west of Anchorage.
According to the team at the Alaska Volcano Observatory, “significantly elevated” emissions of volcanic gas have been detected at the volcano — the tallest in the Aleutian Arc — this month, along with elevated earthquake activity and ground deformations, or shifts in the surface of the volcano. According to the team’s statement from March 12, 2025, these signs indicate that an eruption is looming — likely to occur within a few weeks or months.
So, what, exactly, should be expected from the volcano if it does, indeed, erupt?