M4.7 earthquake 47 km SE of Adak, Alaska

A magnitude 4.7 earthquake struck 47 km SE of Adak, Alaska on Thu, Mar 28, 2019, 8:13 PM HADT (05:13 UTC), 49 km (30 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
4.7	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.047 · 137 stations
4.8	ML, local (Richter)	Alaska Earthquake Center	Preliminary

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Within 100 km, magnitude 1.7 and up: 101 in the 60 days after this one and 46 in the 30 days before it.

The first 60 of 101.

From the USGS Earthquake Hazards Program and its partner networks, event us2000k6y9 (also filed as ak01941mcm55). Read Fri, Oct 2, 2026, 3:19 AM UTC.