Eruption of Mount Shishaldin in the Aleutian Islands of Alaska
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 amounts of ash fall were 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 2 brief periods of satellite-detected volcanic lightning activity near the summit of Shishaldin shortly after the eruption onset. Station PAKF is False Pass, where some light ash fall was observed.
GOES-18 “Red” Visible (0.64 µm) images, with GLM Group points plotted in cyan [click to play animated GIF | MP4]