Great Sitkin (ORANGE/WATCH): Weakly elevated surface temperatures observed in a number of clear overnight MIR images. Webcams were spotty due to Adak outage.



Associated Images:
375mAKKN-MIR-d20251118t1248261107Z-annotated.png

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


Shishaldin (YELLOW/ADVISORY): Shishaldin summit remained in clouds all day and night.
Associated Keywords:
Cloud cover: cloudy;


Atka volcanic complex (GREEN/NORMAL): Typical weakly elevated surface temperatures from the intracrater lake at Korovin. We received our first 2025 high-res SAR acquisition from 11/18. Compared to our only previous look from May 2024, there's mostly just a lot less snow, but the lake shoreline is also subtly expanded on the south side. There are some very reflective features (rocky blocks) around the lake that are lily just buried in snow in the 2024 May image, but will be trackable/ new ones detectable in the future.





Associated Images:
koro_20240506-20251118T0524_tsx.gif
375mAKKO-MIR-d20251118t1309544770Z-annotated.png

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


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: 18 Nov 2025 19:01 UTC