Alaska officials raise alert level on Shishaldin volcano after 'increasing' unrest

UNIMAK ISLAND, Alaska – The Alaska Volcano Observatory is raising the alert level 1 notch for the Shishaldin Volcano connected Unimak Island aft caller signs of unrest.

The observatory present has the volcano successful its yellow/advisory alert alternatively of green/normal level, indicating signs of unrest higher than antecedently recorded. 

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Gas coming from the Shishaldin Volcano acme crater connected Aug. 17, 2025. 

(@alaska_avo/X)

AVO said the volcano's enactment has been "gradually increasing" implicit the past month. 

Videos from Aug. 17 and Aug. 20, showed the state plume coming from the volcano during an overflight and done a webcam timelapse. 

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Steam emitting from Shishaldin connected Aug. 20, 2025. 

( Matt Loewen, Alaska Volcano Observatory/U.S. Geological Survey / FOX Weather)

The observatory said signs of unrest see accrued state emissions and "a much vigorous state plume" coming from the acme crater of the volcano. 

Additionally, AVO noted repeated tiny earthquakes occurring much often arsenic good arsenic anemic infrasound signals since Monday. 

Shishaldin's past eruption play began successful July 2023 and lasted until November of that year, according to AVO data. 

AVO volition proceed to show the volcano for changes successful activity.