ANCHORAGE, ALASKA – A surge in seismic activity and gas emissions at Mount Spurr, a towering 11,070-foot volcano just 80 miles west of Anchorage, has prompted scientists to raise the alert level, sparking concerns of a possible eruption in the coming weeks or months.
The Alaska Volcano Observatory (AVO) announced that Mount Spurr’s alert status has been elevated to “Advisory”, with a Yellow Aviation Color Code, signaling above-normal activity. The decision comes after a dramatic increase in earthquakes beneath the volcano—more than 3,400 tremors recorded over the past year, compared to an average of 100 in previous years.
What’s Happening at Mount Spurr?
In addition to the rise in seismic activity, recent aerial surveys have detected heightened volcanic gas emissions, with newly active steam vents near the summit—a strong indicator of magma movement beneath the surface. These signs suggest that the volcano is becoming more restless, though scientists caution that an eruption is not guaranteed.
Local authorities aren’t taking any chances. Anchorage’s Emergency Operations Center has increased its activation level to Level 2, meaning officials are now in heightened monitoring mode, preparing for the possibility of ashfall or other volcanic hazards.
Could an Eruption Impact Anchorage?
If Mount Spurr erupts, Anchorage and surrounding areas could experience significant disruptions. The biggest concern would be ashfall, which can affect air quality, cause breathing difficulties, and create hazardous driving conditions. Flights to and from Ted Stevens Anchorage International Airport could also be impacted, as volcanic ash is dangerous for aircraft engines.
Mount Spurr last erupted in 1992, spewing massive plumes of ash up to 65,000 feet into the sky and blanketing parts of southcentral Alaska in a thick layer of ash. That eruption resulted in widespread travel disruptions, with flights grounded and visibility reduced.
While there’s no certainty that history will repeat itself, experts warn that Alaskans should remain vigilant and stay informed about the latest updates from the Alaska Volcano Observatory.
What’s Next?
Scientists will continue monitoring Mount Spurr closely, looking for further changes in gas emissions, seismic activity, and ground deformation, which could signal an impending eruption. Officials are advising residents to:
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Prepare for potential ashfall by stocking up on masks, air filters, and emergency supplies.
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Stay updated on evacuation plans and alerts issued by local authorities.
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Limit unnecessary travel near the volcano in case conditions worsen.
For now, Alaska remains on high alert, as experts work to determine whether Mount Spurr’s rumblings are a warning of a major eruption, or just a temporary period of unrest.
