Koryaksky, Kamchatka Peninsula, Russia

KVERT reported that seismic activity at Koryaksky was above background levels on 3 March and at background levels on the other days during 27 February-6 March. Observers reported that during 3-5 March gas plumes containing a small amount of ash rose to an altitude of 3.7 km (12,100 ft) a.s.l. and drifted ENE, E, and SE. The plumes were also seen on satellite imagery. Ash deposits were seen at the summit, and on the N flank at a thickness of about 4 cm. Ash deposits 1-2 mm thick had accumulated in an area between Koryaksky and Avachinsky volcanoes. A weak new fumarole was seen in the crater. The Level of Concern Color Code remained Orange.

Based on information from the Yelizovo Airport, the Tokyo VAAC reported ash on 8 March. On 10 March, an ash plume rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted SE.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT),  Tokyo Volcanic Ash Advisory Center (VAAC)  – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”

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