M2.3 earthquake 221 km W of Adak, Alaska

A magnitude 2.3 earthquake struck 221 km W of Adak, Alaska on Tue, Jun 24, 2025, 10:04 PM HADT (07:04 UTC), 88 km (55 mi) below the surface.

A larger quake followed: M5.0 275 km WSW of Adak, Alaska. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 76 in the 30 days before it.

The first 60 of at least 199.

From the USGS Earthquake Hazards Program and its partner networks, event ak025836s2pc. Read Fri, Oct 2, 2026, 3:45 AM UTC.