M3.0 earthquake 139 km SE of Akutan, Alaska

A magnitude 3.0 earthquake struck 139 km SE of Akutan, Alaska on Mon, Jul 27, 2020, 6:19 AM AKDT (14:19 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M5.7 156 km ESE of Akutan, 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
3.0	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.115 · 10 stations
2.8	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: 123 in the 60 days after this one and 34 in the 30 days before it.

The first 60 of 123.

From the USGS Earthquake Hazards Program and its partner networks, event us6000b9rv (also filed as ak0209lvrsug). Read Thu, Oct 1, 2026, 4:12 AM UTC.