The June 2018 explosive eruption of the #Raikoke volcano injected large amounts of volcanic material directly into the stratosphere. Embedded were two circular structures that remained intact for months. At some point one transferred from the northern Pacific to the subtropics.
A thick plume of volcanic ash rises above the dense cloud cover in this close-up #Himawari8 view of the #Raikoke volcano's eruption. This was the volcano's first eruption since 1924. More imagery: http://go.usa.gov/xyCW8 pic.twitter.com/vZExba5QDZ https://twitter.com/NOAASatellites/status/1143251085361987584 Published at Mon, 24 Jun 2019 21:14:33 +0100
Imagery and Data | NOAA National Environmental Satellite, Data, and Information Service (NESDIS)

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RT @Kachelmannwettr
Eindrucksvoll ist der Ausbruch des Vulkans Raikoke auf den Kurilen zwischen Japan und der russischen Halbinsel Kamtschatka im HD-Satellitenbild zu sehen: https://kachelmannwetter.com/de/sat/0ca806d14a569b3c6a39588bd4b4fc2b/satellit-hd-10min/20190622-0700z.html#play Die Aschewolke reicht bis 13 km hoch #Raikoke #Kurilen #Vulkan /TS
Satellit HD-Bild vom 22.06.2019, 09:00 Uhr - 153.6 E, 48 N