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Great Sitkin volcano: USGS reports WATCH alert level

Reference photo of an older lava flow on Great Sitkin's north flank, September 1, 2023; not current conditions.

Image: Reference photo · September 1, 2023 · Matthew W Loewen / Alaska Volcano Observatory / USGS · not current conditions · Original image source

Agency update: 2026-09-05T18:33:56+00:00

USGS lists the volcano alert level as WATCH and the aviation color code as ORANGE. Agency synopsis: AVO Great Sitkin ORANGE/WATCH – Slow eruption of lava within the summit crater continues. Steaming and elevated surface temperatures observed. An elevated alert level alone does not establish that a new eruption has begun.

This is a developing story; updates will be added as USGS issues them.

Source: USGS

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