KLYUCHEVSKOY VOLCANO; 56°03'N, 160°39'E; Elevation 4,750 m
CURRENT LEVEL OF CONCERN COLOR CODE IS ORANGE
PREVIOUS LEVEL OF CONCERN COLOR CODE IS RED

The explosive-effusive eruption of Klyuchevskoy continues but activity has decreased. Ash explosions up to 8 km (26,250 ft.) ASL are still possible. The activity of the volcano could affect international and low-flying aircraft.

Seismic activity of Klyuchevskoy decreased to low level at 13 h 20 min UTC on July 03 and remains at this level till present time 23 h 30 min UTC, July 03. This low amplitude of volcanic tremor can correspond only weak ash plumes at Klyuchevskoy volcano, possible height of these ash plumes is up to 6-7 km ASL. Seismic activity of Klyuchevskoy is decreasing generally from June 28.
According to satellite data, ash plumes extended for about 80-140 km (or 50-86 mi) to NNW, WEST and SE from the volcano July 02-03. Approximate plume altitude: 5600-6000 m (17,900-19,200 ft) ASL (by atmospheric profile). Clouds obscured the volcano on July 02-03.