M2.5 earthquake 24 km E of Unalaska, Alaska

A magnitude 2.5 earthquake struck 24 km E of Unalaska, Alaska on Sat, Jun 10, 2023, 5:51 PM AKDT (01:51 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.2 55 km SSW of Unalaska, Alaska. This one was a foreshock.

Map

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

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
2.5	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.115 · 10 stations
2.1	ML, local (Richter)	Alaska Earthquake Center	Preliminary

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: 142 in the 60 days after this one and 67 in the 30 days before it.

The first 60 of 142.

From the USGS Earthquake Hazards Program and its partner networks, event us7000k95j (also filed as ak0237fxyoe5). Read Thu, Oct 1, 2026, 6:51 AM UTC.