The lava dome on volcano Sheveluch continues to grow

Although activity on Russia’s Sheveluch Volcano declined sharply in early September 2021, its lava dome continues to grow, accompanied by strong fumarolic activity, lava dome glow, and hot avalanches.

Satellite data still show a bright thermal anomaly over the volcano, and the aviation color code remains orange (the second highest level on the four-color scale)1.

During the second half of August, the volcano experienced hot lava avalanches.

During this period, satellite images showed a daily bright thermal anomaly, and gas-vapor plumes containing some ash spread 307 km (190 miles) to the northeast, east, and south.2

At 11:00 a.m. LT on August 29, a 14 x 15 km (8.7 x 9.3 miles) ash plume drifted 30 km (18.6 miles) west at 2.5 to 3 km (8,200 to 10,000 feet) above sea level.

On August 28, the Kamchatka Branch of the Geophysical Survey noted that small landslides and hot avalanches occasionally descended from the southern and southeastern flanks of the dome. Larger landslides were observed 2 – 4 times during the night.

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