Shiveluch (Kamchatka): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 and is moving at 15 kts in SE direction. The full report is as follows: POSS ERUPTION OBS AT 20190418/1720Z FL140 EXTD SE OBS VA DTG:18/1810Z to 14000 ft (4300 m) …18 Apr: Explosive activity…
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