M2.8 earthquake 77 km NW of Ambler, Alaska

A magnitude 2.8 earthquake struck 77 km NW of Ambler, Alaska on Thu, May 6, 2021, 2:17 AM AKDT (10:17 UTC), 2 km (1 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M3.1 75 km NW of Ambler, 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)	Alaska Earthquake Center	Preferred · Preliminary
2.7	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.059 · 38 stations

No one has reported feeling this quake to the USGS.

An automatic solution; a seismologist may revise it.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 6 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ak0215sjrtkn (also filed as us7000e0lc). Read Fri, Oct 2, 2026, 8:53 AM UTC.