M3.7 earthquake 124 km SE of Perryville, Alaska

A magnitude 3.7 earthquake struck 124 km SE of Perryville, Alaska on Mon, Nov 2, 2020, 11:08 PM AKST (08:08 UTC), 31 km (19 mi) below the surface.

A larger quake followed: M3.9 140 km SE of Sand Point, 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
3.7	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
4.3	mb, body-wave	USGS National Earthquake Information Center	Reviewed · ±0.147 · 13 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: 118 in the 60 days after this one and 58 in the 30 days before it.

The first 60 of 118.

From the USGS Earthquake Hazards Program and its partner networks, event ak020e5ic2rf (also filed as us7000c9mv). Read Fri, Oct 2, 2026, 9:42 PM UTC.