Explosive eruption of Mount Shishaldin in Alaska
![](https://cimss.ssec.wisc.edu/satellite-blog/images/2023/09/ak_so2-20230905_200020.png)
GOES-18 SO2 RGB and Ash RGB images, with plots of Pilot Reports and Volcanic Ash Advisory/Forecast polygons [click to play animated GIF | MP4]
A Pilot Report issued at 1642 UTC (below) highlighted a volcanic cloud extending to an altitude of 25000 feet. The initial Volcanic Ash Advisory and Forecast advised of ash between the surface and 32000 feet. A Special Marine Statement mentioned the possibility of ash fall to the southeast of Umiak Island.
![](https://cimss.ssec.wisc.edu/satellite-blog/images/2023/09/230905_1640utc_goes18_ashRGB_pirep_Shishaldin_AK.png)
GOES-18 Ash RGB image at 1640utc, with cursor sampling of a 1642 UTC Pilot Report [click to enlarge]