M3.3 earthquake 64 km WNW of Tanana, Alaska

A magnitude 3.3 earthquake struck 64 km WNW of Tanana, Alaska on Thu, Dec 30, 2021, 11:11 AM AKST (20:11 UTC), 12 km (8 mi) below the surface.

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
3.3	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.5	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.033 · 124 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: 10 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 ak021gqblfbq (also filed as us7000g81m). Read Thu, Oct 1, 2026, 8:47 PM UTC.