M2.8 earthquake 212 km SSE of False Pass, Alaska

A magnitude 2.8 earthquake struck 212 km SSE of False Pass, Alaska on Sat, Feb 20, 2021, 12:21 AM AKST (09:21 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.3 253 km SSE of King Cove, 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
2.8	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.115 · 10 stations
2.9	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: 12 in the 60 days after this one and 3 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event us7000dgmj (also filed as ak0212chw65s). Read Sat, Oct 3, 2026, 1:28 PM UTC.