Great Sitkin (ORANGE/WATCH): A thermal anomaly was visible in multiple clear VIIRS mid-IR images over the past 24 hours (see attached example). Only two webcam images from GSCK in Ashcam, but one was a nice clear view the steamy dome. It's a nice one to use the Ashcam slider on for comparison showing dome growth over the past 2-1/2 years.

Associated Images:
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gsitkin_gsck-20251215T000600Z.jpg

Associated Keywords:
Volcanic clouds: steam/water;
Elevated surface temperatures: barely elevated;
Cloud cover: mostly clear;

Shishaldin (YELLOW/ADVISORY): Impressive ash resuspension from Shishaldin and Westdahl visible throughout the past 24 hours (see attached examples). There's even a streak of dust coming from the Roundtop area. A small gas plume was visible in webcam views.

Associated Images:
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2025-12-15_08-36-03.jpg
shishaldin_brpk-20251214T213100Z.jpg

Associated Keywords:
Volcanic clouds: steam/water;
Cloud cover: partly cloudy;