M3.5 earthquake 38 km S of Chenega, Alaska

A magnitude 3.5 earthquake struck 38 km S of Chenega, Alaska on Sun, Feb 9, 2020, 4:32 AM AKST (13:32 UTC), 12 km (7 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
3.5	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.7	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.028 · 170 stations

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

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: 24 in the 60 days after this one and 17 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ak0201udffmn (also filed as us70007m28). Read Fri, Oct 2, 2026, 8:05 PM UTC.