AVO staff visited on October 24th to conduct pre-winter maintenance on Spurr’s monitoring network and noted that the fumaroles (steam/gas vents) in Spurr summit’s crater were steaming.

2025年3月12日 · Likelihood of Mount Spurr eruption in the next few weeks or months has increased Summary During overflights on March 7 and 11, AVO measured significantly elevated volcanic gas emissions from Mount Spurr volcano. Newly reactivated fumaroles (gas vents) were also seen at the volcano’s Crater Peak vent.

2025年3月11日 · During an overflight on Friday, March 7, AVO measured about 450 metric tons per day of SO 2 from the Spurr summit vent (figure). This is an increase from less than 50 metric tons per day SO 2 measured in December 2024. AVO also measured increased concentrations of CO 2 at the summit and at the Crater Peak vent, 2 miles (3.5 km) south of the summit.

2025年3月13日 · The volcano has seen an uptick in earthquakes and "significantly elevated volcanic gas emissions" in recent days. Mount Spurr is an 11,000-foot-tall volcano located …

2025年3月13日 · A volcano near Anchorage, Alaska's largest city, could erupt in the 'next few weeks or months,' the Alaska Volcano Observatory (AVO) has shared in a release.

2025年2月9日 · Currently, most of the them are occurring under the Crater Peak vent, with some also located under the summit of Mount Spurr. Clear views of the volcano showed no unusual activity over the past day. AVO continues to monitor activity at Mount Spurr for signals that would indicate that the volcano is moving closer to an eruption.

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Water vapor and volcanic gas billowed from a dramatic, linear series of pits or vents extending about 1,250 m (4,100 ft) across the heavily crevassed and disrupted glacial-ice cover on the north side of the summit region. Multiple sources of vapor from these vents explain the apparent double plume seen in the photograph of September 17.