Mount Spurr in Alaska Shows Signs of Impending Eruption

ANCHORAGE, Alaska — Scientists are warning residents that Mount Spurr, located approximately 75 miles west of Anchorage in the Tordrillo Mountains, may be on the brink of eruption. The Alaska Volcano Observatory announced its heightened alert status after detecting continuous seismic activity and elevated levels of volcanic gases coming from the mountain.

The observatory stated that it is closely monitoring the volcano for any further signs indicating an impending eruption. In its latest report, officials noted, “seismic activity remained elevated with numerous small, shallow volcanic earthquakes detected beneath the volcano.” While the eruption is not expected to happen immediately, previous volcanic events suggest that ground deformation and increased fumarolic activity often precede an eruption.

“If an eruption occurred, it would be preceded by additional signals allowing for warnings,” the observatory confirmed. Residents in South Central Alaska are being urged to familiarize themselves with potential hazards related to volcanic activity, particularly ashfall, which poses significant risks to both health and aviation.

Though immediate nearby resident areas are scarce, popular recreational sites in the vicinity could be affected by volcanic hazards. Mount Spurr’s potential pyroclastic flow—comprising a fast-moving mixture of ash, rock, and gas—could lead to dangerous mudflows in its surrounding region. The alert on the volcano shifted from green to yellow in October 2024, following months of increasing unrest and the formation of a new crater.

Historically, Mount Spurr has demonstrated its volatility. An eruption in 1953 produced a plume that reached 30,000 feet, leading to ashfall that blanketed Anchorage and forced the closure of Ted Stevens Anchorage International Airport for two days. Further eruptions occurred in 1992, with the June eruption causing a 47,500-foot burst of debris and significant disruptions at regional airports due to ashfall.

Travelers considering a visit to the Mount Spurr area are advised to heed warnings and stay updated on the volcano’s activity. “Anyone considering a visit to the area around Spurr should be aware of these hazards and obey any restrictions that might be put in place by land and emergency managers,” the observatory advised through posts on X, formerly known as Twitter.