M1.5 earthquake 87 km NNW of Karluk, Alaska

A magnitude 1.5 earthquake struck 87 km NNW of Karluk, Alaska on Tue, Oct 13, 2020, 3:56 PM AKDT (23:56 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.2 60 km S of Kokhanok, 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
1.5	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
1.39	ML, local (Richter)	AV	Final · ±0.252035405096574 · 8 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: 94 in the 60 days after this one and 40 in the 30 days before it.

The first 60 of 94.

From the USGS Earthquake Hazards Program and its partner networks, event ak020d719o4a (also filed as av91132201). Read Thu, Oct 1, 2026, 8:36 AM UTC.