M2.4 earthquake 136 km SSE of Halibut Cove, Alaska

A magnitude 2.4 earthquake struck 136 km SSE of Halibut Cove, Alaska on Fri, Jul 2, 2021, 4:05 PM AKDT (00:05 UTC), 47 km (29 mi) below the surface.

A larger quake followed: M2.8 104 km ENE of Ouzinkie, 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
2.4	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
2.5	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.051 · 50 stations

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: 20 in the 60 days after this one and 2 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ak0218gax1w8 (also filed as us7000eidv). Read Mon, Oct 5, 2026, 5:37 AM UTC.