February 21, 2024



Magma rising at Great Sitkin volcano, Alaska

The Watchers

Posted by on (1 day ago)
Categories: Satellite imagery, Volcanoes

A lava dome-like feature formed in the summit crater of Great Sitkin volcano, Alaska, suggesting magma is rising near the surface. As a result, the Alaska Volcano Observatory (AVO) has raised the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH.

A satellite radar image captured at 05:32 UTC on July 23, 2021, shows a small approximately 50 m (150 feet) diameter area of uplift in the center of the crater at Great Sitkin.

Seismicity has been at relatively low levels this week compared to last week, making AVO suggest that the lava dome-like feature was emplaced last week.

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