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“The increase in gas emissions confirms that new magma has intruded into the Earth’s crust beneath the volcano and indicates that an eruption is likely, but not certain, to occur within the next few weeks or months,” the AVO reported.
The agency noted that if Mount Spurr erupts, it will likely be similar to the explosive events in 1953 and 1992. Those eruptions lasted for hours, sending massive ash clouds hundreds of miles downwind and covering parts of southcentral Alaska in volcanic dust.
Scientists expect to see a rise in seismic activity, stronger gas emissions, and increased surface heating before an eruption occurs. If these warning signs escalate, authorities could have days or weeks of advance notice.
Mount Spurr is part of Alaska’s volatile Aleutian Arc, a region teeming with active volcanoes. The 1992 eruption sent ash plumes soaring 65,000 feet into the sky, grounding flights and coating large areas of Alaska in ash. That event lasted several months, with three major explosions between June and September.
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Alaska is home to roughly 90 active volcanoes, making it one of the most geologically unstable areas in the world. Other high-risk volcanoes in the region include Mount Redoubt, Augustine Volcano, and Novarupta, the site of the largest volcanic eruption of the 20th century in 1912. That catastrophic event caused massive environmental destruction.
If Mount Spurr erupts, the impact could be severe. Aviation routes could be disrupted, air quality could plummet, and communities in Alaska could experience ashfall. Authorities continue to monitor the situation closely, but with each passing day, the likelihood of a major eruption appears to be increasing.
