Great Sitkin (ORANGE/WATCH): Nothing of note in mostly cloudy webcam images. Barely elevated surface temps at the summit in MIR VIIRS image from last night.

Associated Images:
Screenshot 2025-12-06 112946.png

Associated Keywords:
Elevated surface temperatures: barely elevated;
Cloud cover: cloudy; mostly clear;

Shishaldin (YELLOW/ADVISORY): Steam plume observed throughout yesterday in partly cloudy webcam images. Nothing of note observed in several clear overnight MIR VIIRS images.

Associated Images:
shishaldin_islz-20251206T023000Z.jpg

Associated Keywords:
Volcanic clouds: steam/water;
Cloud cover: mostly clear;

Cleveland (GREEN/NORMAL): Vigorous steam plume visible in clear webcam images yesterday. Moderately elevated surface temps seen in two images overnight; these triggered CIMSS alerts.

Similar plumes were observed last year at this time, and similar thermal anomalies have been seen sporadically throughout the year.

Associated Images:
375mAKSH-VIS-d20251204t2244863244Z.png
cleveland_clcl-20251206T021000Z.jpg
375mAKCL-MIR-d20251206t1413351338Z.png

Associated Keywords:
Volcanic clouds: steam/water;
Elevated surface temperatures: moderately elevated;