Mount Spurr

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  • Increased Seismic Activity: Dozens of mini-earthquakes, including “swarms,” have been recorded at Mount Spurr, indicating rising magma and increased pressure.
  • Eruption Threat: Scientists fear a major eruption is imminent due to the increased seismic activity and elevated gas emissions.
  • Potential Ash Cloud: An eruption could be explosive, with ash plumes reaching up to 50,000 feet. Each explosive event may last 3-4 hours.
  • Anchorage on Alert: Anchorage, with
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    over 300,000 residents, is on emergency alert (Level 2) and is located 81 miles from the volcano.
  • Community Preparedness: Residents are stocking up on essentials like food, water, pet supplies, N95 masks, and protective gear.
  • Rising Unrest: Concerns began in April 2024, with a significant increase in weekly quakes and gas emissions by October 2024.
  • Gas Emissions: Elevated carbon dioxide and sulfur dioxide emissions signal magma heating water and gas below the surface.
  • Volcanic
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    Tremor as Indicator:     Sustained volcanic tremor would be the next sign of an imminent eruption.
  • Last Eruption Impact: The 1992 eruption from Crater Peak (a side vent) blanketed Anchorage in ash and shut down the airport.
  • Most Likely Eruption Site: Experts expect the next eruption to likely occur from Crater Peak again.
  • Pet Preparedness: Pet stores are experiencing high demand for protective goggles and respirators for pets.
  • Monitoring: The National Transportation Safety Board and US Geological Survey are closely monitoring the volcano.