Continuous volcanic ash from Sheveluch volcano observed at 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 17:20 UTC on April 8, 2026. The advisory was issued by the Tokyo VAAC at 18:00 UTC the same day.

According to the advisory, volcanic ash was continuously observed in Himawari-9 satellite imagery. The ash cloud altitude was observed at 7 900 m (26 000 feet). Forecasts suggested the ash plume could reach as high as 8 500 m (28 000 feet) within the next 6 to 12 hours. The ash cloud was reported to be moving north at 19 km/h (12 mph). Some portions of the ash cloud were obscured by meteorological clouds. No Aviation Color Code was stated in this advisory.

The Smithsonian / USGS Weekly Volcanic Activity Report for March 26–April 1, 2026, noted ongoing eruptive activity at Sheveluch, with a new dome lobe growing along the north part of the main lava dome. Explosions on March 27, 29, and 31 generated ash plumes rising to 10 600–12 000 m (38 700–39 400 feet) above sea level that drifted significant distances downwind. The Aviation Color Code during that period was Orange.

Sheveluch is a large stratovolcano located in the northern part of the Kamchatka Peninsula, Russia. It is one of the most active volcanoes in the region, known for frequent explosive eruptions, lava domes, pyroclastic flows, and ashfall. Nearby settlements such as Klyuchi, approximately 50 km (31 miles) south, may be affected by volcanic hazards including ashfall and pyroclastic flows.