M3.5 earthquake 119 km SE of Chignik, Alaska

A magnitude 3.5 earthquake struck 119 km SE of Chignik, Alaska on Mon, Feb 10, 2020, 11:37 AM AKST (20:37 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.7 100 km SE of Chignik, 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
3.5	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
4.2	mb, body-wave	USGS National Earthquake Information Center	Reviewed · ±0.146 · 13 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: 9 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 ak0201w55vhv (also filed as us70007ms0). Read Sat, Oct 3, 2026, 5:37 AM UTC.