Adak, Alaska – Two earthquakes struck near Adak within roughly 90 minutes Sunday, marking a brief burst of seismic activity along the Aleutian chain that residents could feel in localized areas.
According to the U.S. Geological Survey, a magnitude 2.6 earthquake hit 81 kilometers south-southeast of Adak at 1:02 p.m. UTC, followed by a stronger magnitude 3.0 event at 2:25 p.m. UTC just 24 kilometers west-southwest of the community. The second quake occurred at a shallow depth of 6.0 kilometers, increasing the likelihood of light shaking near the source.
The Aleutian Islands sit along one of the most active seismic zones in North America, where the Pacific Plate subducts beneath the North American Plate. Sunday’s activity did not trigger any tsunami alerts, and no damage or injuries have been reported.
Shallow quakes like the M3.0 event can produce sharper, more noticeable jolts, particularly in smaller communities like Adak. Residents are encouraged to secure loose items, review emergency plans, and ensure mobile devices remain charged in case of additional activity.
Seismic sequences in this region can produce follow-up tremors, though most remain minor. Monitoring continues, and additional updates could be issued if activity increases.
