Continuous volcanic ash observed at Sheveluch volcano reaches 7 900 m (26 000 feet) a.s.l., Russia

Volcanic ash from Sheveluch in Russia was observed at 7 900 m (26 000 feet) above sea level at 23:20 UTC on April 8, 2026. The Tokyo VAAC issued this advisory at 00:00 UTC on April 9, 2026.

The ash cloud was continuously observed in Himawari-9 satellite imagery, extending from the surface up to FL260 (7 900 m or 26 000 feet). The observed ash was moving to the northeast at approximately 46 km/h (29 mph). Some portions of the ash were obscured by meteorological clouds. The advisory notes that responsibility for this ash event is being transferred to VAAC Anchorage. No Aviation Color Code was stated in this advisory.

According to the Smithsonian / USGS Weekly Volcanic Activity Report, Sheveluch volcano exhibited continuing eruptive activity during March 26 to April 1, 2026, with a new dome lobe growing on the north part of the main lava dome. Explosions on March 27, 29, and 31 generated ash plumes that rose to 10 600–12 000 m (38 700–39 400 feet) and drifted great distances. A thermal anomaly was detected in satellite imagery each day. The Aviation Color Code during this period remained at Orange.

Sheveluch is a large stratovolcano in Russia’s Kamchatka Peninsula known for frequent explosive eruptions that produce towering ash plumes, pyroclastic flows, and lava dome growth. Hazards include widespread ashfall and pyroclastic flows. The nearest settlements at risk include Klyuchi, located about 50 km (31 miles) south-southwest of the volcano.