Updates on volcanic activity (Smithsonian)
The Smithsonian/USGS Weekly Volcanic Activity Report provides information about global volcanism on a weekly basis. Latest Klyuchevskoy report has been published on 06 Aug 2025 12:05.
The Kamchatkan Volcanic Eruption Response Team (KVERT) reported that eruptive activity at Klyuchevskoy?s summit crater continued during 30 July-5 August. Satellite data showed a strong thermal anomaly at the volcano all week. Since 30 July a lava flow has been moving down the WSW flank, accompanied by phreatic explosions. Satellite data at 2315 on 1 August showed an ash plume extending for 150 km to the SE. Ash seen in satellite imagery at 0613 on 2 August was rising up to 7-8 km (23,000-26,200 ft) a.s.l. and drifting 50 km E. Additional satellite data from 4 August at 0432 showed ash reaching up to 7.5 km (24,600 ft) a.s.l. and extending for 50 km to the NE. Two lava flows were reported on 4 August effusing down the W and SE flanks, with ash rising up to 7 km (23,000 ft) a.s.l. and drifting for 600 km to the SE. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates and times are provided in Coordinated Universal Time (UTC); specific events are indicated in local time where specified.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
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