Ash cloud from Sheveluch volcano observed at 8 800 m (29 000 feet) a.s.l., Russia

Volcanic ash from Sheveluch in Russia was observed at 8 800 m (29 000 feet) above sea level at 13:20 UTC on March 31, 2026. The advisory was issued by the Tokyo VAAC at 13:52 UTC.

The ash cloud was detected at altitudes between the surface and FL290, which converts to a maximum height of 8 800 m (29 000 feet). Satellite imagery from Himawari-9 confirmed the presence of the ash cloud, which was moving east at 56 km/h (35 mph). No Aviation Color Code was stated in this advisory.

According to the Smithsonian/USGS Weekly Volcanic Activity Report for March 11–18, 2026, Sheveluch exhibited ongoing eruptive activity, including daily thermal anomalies and ash plumes rising up to 8 000 m (19 700 feet) and, on March 16, up to 11 000 m (36 100 feet) above sea level. Large ash clouds traveled hundreds to thousands of kilometers eastward.

Sheveluch is a large, active stratovolcano located in Kamchatka, Russia. Known hazards include ashfall, pyroclastic flows, and lava domes collapses. The area’s remoteness limits direct impact on large populations, but communities such as Klyuchi, located approximately 50 km (31 miles) southwest, may experience ashfall during significant eruptive episodes.