Scientists Warn US Volcano Eruption Threat Rising Within Weeks
Alaska’s Mount Spurr Nearing Eruption, Anchorage Prepares
(Include image: Mount Spurr’s 1992 eruption with caption: "Mount Spurr’s 1992 eruption sent ash plumes 50,000 feet high. Credit: USGS")
Nearly 300,000 residents in Anchorage, Alaska, are preparing for a potential volcanic eruption as Mount Spurr, an 11,000-foot volcano 81 miles west of the city, shows escalating activity. Scientists at the Alaska Volcano Observatory (AVO) warn the volcano could erupt within “weeks to months,” prompting officials to raise emergency planning to Level 2.
Emergency Plans Activated
Anchorage authorities are coordinating with the AVO and National Weather Service to monitor threats. Schools have outlined protocols, including early dismissals or sheltering students if ash clouds approach rapidly. “We’ll either send kids home or keep them safe onsite with supplies like N95 masks,” said Jared Woody of the Anchorage School District.
(Include image: Ash-covered Anchorage in 1992 with caption: "Anchorage faced airport closures and health risks during Spurr’s 1992 eruption. Credit: NOAA")
Eruption Risks
A likely eruption at Crater Peak, a side vent, could produce ash plumes up to 50,000 feet, blanketing Anchorage in debris. While fast-moving mudflows (over 200 mph) are expected, no communities lie in their direct path. However, ash poses respiratory risks, especially for those with asthma.
Historical Context
Mount Spurr’s Crater Peak last erupted in 1992, disrupting daily life with ashfall and costing $2 million in cleanup. Two heart attacks, one fatal, were linked to ash shoveling. The summit vent hasn’t erupted in 5,000 years, making Crater Peak the probable source.
(Include image: Map showing Spurr’s proximity to Anchorage with caption: "Mount Spurr is one of Alaska’s 53 active volcanoes. Credit: USGS")
Scientific Warnings
Since April 2024, Spurr has shown increased earthquakes, ground swelling, and melting snow—signs of rising magma. Gas emissions detected in March 2025 further signaled unrest. AVO’s Matt Haney notes volcanic tremors (sustained seismic activity) could precede an eruption by weeks, as in 1992.
Uncertain Timeline
While Spurr’s patterns suggest an imminent eruption, timelines remain unclear. Haney emphasizes continuous monitoring but acknowledges variability—nearby Mount Redoubt erupted two months after tremors began in 2009.
(Include image: Scientists measuring gas emissions with caption: "AVO scientists monitor gas levels to predict eruptions. Credit: USGS")
Anchorage remains on alert, balancing preparedness with the unpredictable nature of volcanoes. Residents are urged to stay informed as the city braces for potential disruption.
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