M4.9 earthquake 126 km SW of Adak, Alaska

A magnitude 4.9 earthquake struck 126 km SW of Adak, Alaska on Sun, Jun 9, 1996, 9:57 PM HADT (06:57 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M7.3 46 km SSW of Adak, 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
4.9	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · 39 stations
4.9	mb, body-wave	Alaska Earthquake Center	Preliminary

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Within 100 km, magnitude 1.9 and up: 157 in the 60 days after this one and 33 in the 30 days before it.

The first 60 of 157.

From the USGS Earthquake Hazards Program and its partner networks, event usp0007jdy (also filed as ak9967g0z97v). Read Mon, Oct 5, 2026, 7:26 AM UTC.