GOES-18 SO2 RGB images [click to play animated GIF | MP4]

GOES-18 (GOES-West) SO2 RGB images (above) showed the eastward drift of a volcanic cloud produced by an explosive eruption of Mount Shishaldin that began around 0150 UTC on 16 September 2023. Trace ash fall was observed at False Pass from 0200-0430 UTC.

GOES-18 True Color RGB images from the CSPP GeoSphere site (below) helped to highlight the ash-laden volcanic cloud (light shades of tan) moving east from the summit of Shishaldin.

GOES-18 True Color RGB images [click to play MP4 animation]

GOES-18 “Red” Visible (0.64 µm) images (below) include plots of GLM Group points — which revealed a brief period of satellite-detected volcanic lightning activity near the summit of Shishaldin shortly after the eruption onset.

GOES-18 “Red” Visible (0.64 µm) images, with GLM Group points plotted in cyan [click to play animated GIF | MP4]

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