Another explosive eruption of Mount Shishaldin

By Scott Bachmeier • 16 July 2023

GOES-18 Ash Loading product [click to play animated GIF | MP4]

Following the eruption on 14 July, another explosive eruption of Mount Shishaldin began just before 0530 UTC on 16 July 2023 — radiometrically-retrieved GOES-18 (GOES-West) Ash Loading (above) and Ash Height (below) products from the NOAA/CIMSS Volcanic Cloud Monitoring site indicated moderate to high amounts of ash loading, existing at heights within the 4-10 km range during the 2.5 hour period following eruption onset.

GOES-18 Ash Height product [click to play animated GIF | MP4]

In a longer animation sequence of GOES-18 SO2 RGB, Ash RGB, Air Mass RGB and Nighttime Microphysics RGB images (below), the volcanic ash plume exhibited a different signature in each of the RGBs (a factor of which ABI spectral bands were used, and how they were scaled in each RGB recipe).