Description: On March 14, 2025, the Alaska Volcano Observatory raised the Aviation Color Code and Volcano Alert Level at Atka Volcanic Complex from GREEN/NORMAL to YELLOW/ADVISORY, citing a substantial increase in seismicity detected between 4;20 - 4;:30 pm AKST. AVO noted that small earthquakes and weak tremor were observed over the past week and elevated levels of sulfur dioxide gas were detected in satellite data. This activity increases the likelihood of explosive events at one of the volcanoes within the Atka volcano complex, most likely Korovin.