M3.7 earthquake 48 km SW of Nelson Lagoon, Alaska

A magnitude 3.7 earthquake struck 48 km SW of Nelson Lagoon, Alaska on Tue, Dec 31, 2019, 1:16 AM AKST (10:16 UTC), 155 km (96 mi) below the surface.

A larger quake followed: M3.8 30 km SSW of Nelson Lagoon, 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
3.7	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.135 · 14 stations
3.5	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: 24 in the 60 days after this one and 8 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event us70006wra (also filed as ak019grt7jxj). Read Sun, Oct 4, 2026, 7:59 AM UTC.