M1.5 earthquake 74 km WSW of Unalaska, Alaska

A magnitude 1.5 earthquake struck 74 km WSW of Unalaska, Alaska on Tue, Jul 22, 2025, 9:30 AM AKDT (17:30 UTC), 74 km (46 mi) below the surface.

A larger quake followed: M5.3 23 km N of Dutch Harbor, 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.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 95 in the 60 days after this one and 50 in the 30 days before it.

The first 60 of 95.

From the USGS Earthquake Hazards Program and its partner networks, event ak0259c0ecyo. Read Wed, Sep 30, 2026, 11:37 PM UTC.