Great Sitkin (ORANGE/WATCH): South flank motion of the lava dome continues in TSX SAR imagery from the past day. Minor steaming observed in mostly cloudy satellite imagery. Webcam blurry (and cloudy).





Associated Images:
Great Sitkin_orb_63_ASC_20260128.gif
2026-01-27-00_00_2026-01-27-23_59_Sentinel-2_L1C_Highlight_Optimized_Natural_Color.jpg

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


Shishaldin (YELLOW/ADVISORY): Weakly elevated surface temperatures observed in clear satellite views. Nice steaming as well in satellite and webcam views. Crater still has snow inside but is snow-free deep. Maxar imagery is WorldView-2 so no SWIR

There are some suspicious TROPOMI views that are all within the noise, but maybe if stacked would reveal a signal.









Associated Images:
375mAKSH-MIR-d20260128t1239618728Z-annotated.png
shishaldin_islz-20260127T213000Z.jpg
shishaldin_brpk-20260128T033100Z.jpg
Screenshot 2026-01-28 at 9.22.19 AM.png

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


Pavlof (GREEN/NORMAL): Consistent weakly elevated surface temperatures in clear overnight MIR imagery. Webcam and satellite views show minor snow-free areas near the summit but a snowy north crater and no SWIR or clearly new melting spots. No steam observed.



Associated Images:
375mAKPV-MIR-d20260128t1219376919Z-annotated.png

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


To view these and other satellite data, please use http://volcview.wr.usgs.gov/

Duty person can be reached at (907) 786-7481 if you have any questions.

Last image viewed: 28 Jan 2026 18:30 UTC