M4.7 earthquake 51 km SSW of Adak, Alaska

A magnitude 4.7 earthquake struck 51 km SSW of Adak, Alaska on Sun, Jun 30, 2019, 5:21 AM HADT (14:21 UTC), 62 km (38 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 · ±0.028 · 380 stations
4.4	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: 103 in the 60 days after this one and 64 in the 30 days before it.

The first 60 of 103.

From the USGS Earthquake Hazards Program and its partner networks, event us700047pz (also filed as ak0198bkqgu3). Read Sat, Oct 3, 2026, 9:35 PM UTC.