Klyuchevskoy (Kamchatka): (20 Apr) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 and is moving at 30 kts in SE direction. The full report is as follows: VA EMISSIONS CONTINUING OBS VA DTG:20/0520Z to 22000 ft (6700 m) Aso (central Kyushu, Japan): (20 Apr) The Japan…
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