Eruption of Mount Shishaldin
![](https://cimss.ssec.wisc.edu/satellite-blog/images/2023/07/ak_so2-20230723_100020.png)
GOES-18 SO2 RGB and Ash RGB images, 0700-1900 UTC [click to play animated GIF | MP4]
A toggle between the SO2 RGB and Ash RGB images at 1000 UTC is shown below.
A pilot report issued at 0727 UTC (below) indicated that volcanic ash (VA) was rising to altitudes of 30000 feet (FL300).![](https://cimss.ssec.wisc.edu/satellite-blog/images/2023/07/230723_0720utc_goes18_ashRGB_pirep_AK.png)
GOES-18 Ash RGB image at 0720 UTC, with cursor sampling of a Pilot Report issued at 0727 UTC [click to enlarge]
===== 24 July Update =====
![](https://cimss.ssec.wisc.edu/satellite-blog/images/2023/07/ak_so2_2-20230724_020020.png)
GOES-18 SO2 RGB images, 0700 UTC on 23 July to 1700 UTC on 24 July [click to play animated GIF | MP4]