Alaska Volcano Observatory scientists have noted increased small earthquakes below and gas emissions from Mount Spurr in recent weeks. It’s currently at the advisory alert level.
Mount Spurr is located about 80 miles west of Anchorage and is more than 11,000 feet in elevation. Observatory Scientist Matt Haney says it erupted in 1958 and three times in 1992 from June through September. During the last eruptions, about one-quarter inch of ash coated surfaces throughout the Southcentral region, including the Upper Valley. The ash is made up of fine particles and can persist for several months.
According to the most recent information released from the Observatory, the ash can cause severe damage to engines, heating and intake systems, and electrical systems. It also is abrasive, can damage glass, and is harmful to breathe. They suggest mixing the ash with snow or water to help keep it from becoming airborne.
According to Haney, it’s difficult to know the exact impacts it might have on air and ground travel. But if the region were to see significant ash fall, the effects of remobilized ash could last for weeks or months as it is resuspended by winds or vehicle traffic.
Haney says in case of an eruption, there could be supply chain issues. Though he notes that there were no short-term impacts on food supply in 1992. He refers to the State’s recommendations to have several weeks of non-perishable food on hand. And he encourages residents to visit the ready.alska.gov website to learn more about other ways to prepare for an eruption and what to do afterward.
