On August 11, the Alaska Volcano Observatory, part of the U.S. Geological Survey, announced persistent volcanic activity at three volcanoes in Alaska. Great Sitkin is currently at a WATCH status, assigned an ORANGE aviation code, due to a gradual lava eruption occurring within its summit crater. Kupreanof is under an ADVISORY status with a YELLOW aviation code, following the detection of minor earthquakes and sulfur dioxide emissions. Shishaldin remains at an ADVISORY level, showcasing seismic and infrasound activity, as well as summit steaming and sulfur dioxide output. The current eruption at Great Sitkin commenced in July 2021, with ongoing monitoring performed through seismic sensors, satellite imagery, webcams, and various other systems.
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