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On the morning of Tuesday, June 30, AVO received a report of an eruption of Korovin Volcano from a ground observer in the village of Atka. Low-level eruption plumes were reported, and light ashfall occurred in the village of Atka. The crew of a Coast Guard C-130 confirmed a plume to 16,000 feet (4877 m) ASL. On Wednesday, July 1, inclement weather prohibited direct observation of the volcano. Poor weather conditions also hindered observation of the volcano with satellite imagery. AVO has received no reports of further eruptive activity.
Korovin Volcano is located on the north end of Atka Island in the central Aleutians, 334 miles (538 km) west of Dutch Harbor. It is 13 miles (21 km) north of the village of Atka, population of approximately 100. Korovin is a 5029-foot-high (1533 m) stratovolcano with a basal diameter of 4 miles (7 km). The last reported eruption was in March, 1987.
AVO does not maintain seimic monitoring equipment on Atka Island. However, AVO will continue to monitor the situation closely using satellite and field observations.
Seismic activity is monitored in real time at 16 volcanoes
in Alaska. Some of these volcanoes may currently display
anomalous seismicity, but they are not considered to be at a
dangerous level of unrest.