No identifiable ash cloud at Klyuchevskoy volcano, Russia

Volcanic ash from Klyuchevskoy in Russia was not identifiable in satellite imagery as of 11:20 UTC on October 15, 2025. The advisory was issued by VAAC Tokyo at 11:50 UTC on the same day.

No ash cloud was observed or forecast in this advisory. The information was sourced from Himawari-8 satellite imagery. No Aviation Color Code was stated in this advisory. It is noted that additional advisories for this volcano may be issued by VAAC Anchorage, but no volcanic ash was detected over the VAAC Tokyo area of responsibility at the time of this report.

According to the Smithsonian / USGS Weekly Volcanic Activity Report for late September 2025, wind was no longer resuspending previously deposited ash on the north flank of Klyuchevskoy. Only fumarolic emissions were observed, and the Aviation Color Code was lowered to Green (the lowest level) on September 25, 2025.

Klyuchevskoy is a large stratovolcano located on the Kamchatka Peninsula in Russia. It is known for frequent explosive eruptions, producing ash plumes, lava flows, and pyroclastic flows. Ashfall and volcanic hazards can impact communities such as Klyuchi, located approximately 30 km (19 miles) from the volcano. The region is closely monitored due to its active volcanic history and potential impacts on both local populations and air traffic in the North Pacific region.