Eruptive activity continues at Mount Cerberus on Semisopochnoi Island, Alaska

Eruptive activity continues at Mount Cerberus on Semisopochnoi Island, Alaska

Eruptive activity continues at the north crater of Mount Cerberus on Semisopochnoi Island, the Alaska Volcano Observatory (AVO) reported at 20:01 UTC on September 8, 2021. Seismicity at the volcano remains elevated and variable, with periods of continuous tremor,…

Increased seismicity at Atka volcanic complex, alerts raised, Alaska

Increased seismicity at Atka volcanic complex, alerts raised, Alaska

Due to increased seismicity detected southwest of Korovin volcano, Atka volcanic complex, the Alaska Volcano Observatory (AVO) has raised the Aviation Color Code for the volcano to Yellow and Alert Level to Advisory on August 11, 2021. Numerous small earthquakes…

Ash-emissions at Pavlof volcano, Aviation Color Code raised to Orange, Alaska

Ash-emissions at Pavlof volcano, Aviation Color Code raised to Orange, Alaska

Low-level ash emissions were observed at Pavlof volcano, Alaska on August 5, 2021, prompting the Alaska Volcano Observatory (AVO) to raise the Aviation Color Code to Orange and Alert Level to Watch. In addition, seismic tremor and small explosions have been detected…

Magma rising at Great Sitkin volcano, Alaska

Magma rising at Great Sitkin volcano, Alaska

A lava dome-like feature formed in the summit crater of Great Sitkin volcano, Alaska, suggesting magma is rising near the surface. As a result, the Alaska Volcano Observatory (AVO) has raised the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH. A…

Semisopochnoi Aviation Color Code raised to Orange, Alaska

Semisopochnoi Aviation Color Code raised to Orange, Alaska

The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code for Semisopochnoi volcano to Orange and the Volcano Alert Level to Watch on July 12, 2021. The decision was made due to the onset of continuous volcanic tremors and detections of explosive…