M3.0 earthquake 137 km SSE of Chiniak, Alaska

A magnitude 3.0 earthquake struck 137 km SSE of Chiniak, Alaska on Wed, Dec 11, 2019, 4:31 PM AKST (01:31 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.7 116 km SE of Old Harbor, 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
3.0	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.0	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

1 person reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 44 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 ak019fw8q6x9 (also filed as us70006npt). Read Mon, Oct 5, 2026, 7:23 AM UTC.