Shishaldin (YELLOW/ADVISORY): Faint, diffuse vapor plume observed in Suomi VIIRS true color image from 11 Dec 2025 23:55 UTC (attached). Possible very faint and small thermal signal at the summit. Probably a warm crater/gasses and just the right look angle producing the signal (attached).
Associated Images:
375mAKSH-VIS-d20251211t2355583116Z.png
375mAKSH-MIR-d20251212t1159250338Z.png
Associated Keywords:
Volcanic clouds:
steam/water;
Elevated surface temperatures:
barely elevated;
Cloud cover:
partly cloudy; mostly clear;