M4.7 earthquake 92 km SSW of Atka, Alaska

A magnitude 4.7 earthquake struck 92 km SSW of Atka, Alaska on Fri, Jul 26, 2019, 9:40 PM HADT (06:40 UTC), 25 km (15 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	Mww, W-phase moment	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.063 · 24 stations
4.5	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: 89 in the 60 days after this one and 49 in the 30 days before it.

The first 60 of 89.

From the USGS Earthquake Hazards Program and its partner networks, event us60004wee (also filed as ak0199k3leys). Read Fri, Oct 2, 2026, 3:18 AM UTC.