Great Sitkin (ORANGE/WATCH): Slightly elevated surface temperatures observed in several VIIRS MIR images over the past day (example attached). Clear web camera views of the volcano show nothing noteworthy. Nothing was observed in TROPOMI and VIIRS SO2 imagery.

Associated Images:
375mAKKN-MIR-d20251214t0101433866Z.png

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

Shishaldin (YELLOW/ADVISORY): Nothing significant observed in clear satellite views of the volcano over the past day. Clear web camera views show vapor emissions at the summit. Strong northerly winds are entraining loose fine material from snow free areas and are producing some impressive dust plumes south of Unimak Island and the Alaska Peninsula (see attached example).

Associated Images:
1kmAKEA-VIS-d20251213t2316802654Z.png

Associated Keywords:
Cloud cover: mostly clear;