Alaska earthquakes

M5.7 earthquake 110 km WSW of Adak, Alaska

A magnitude 5.7 earthquake struck 110 km WSW of Adak, Alaska on Tue, Aug 13, 1974, 7:34 PM GMT-10 (05:34 UTC), 56 km (35 mi) below the surface.

A larger quake followed: M5.8 92 km WSW of Adak, Alaska. This one was a foreshock.

More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
5.7 (mb), moderate
Local time
UTC
1974-08-14 05:34:54 UTC
Depth
56.0 km (34.8 mi), shallow
Epicenter
51.561° N, 178.145° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
131

Nearby

Within 100 km, magnitude 2.7 and up: 4 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 5.892 km WSW of Adak, Alaska · 19038 days ago · 46 km deep · 23 km away
  2. 4.0138 km W of Adak, Alaska · 19030 days ago · 66 km deep · 34 km away
  3. 4.4151 km W of Adak, Alaska · 19027 days ago · 36 km deep · 64 km away
  4. 4.3174 km WSW of Adak, Alaska · 18993 days ago · 53 km deep · 64 km away

Before

  1. 5.8109 km WSW of Adak, Alaska · 19041 days ago · 52 km deep · 5 km away
  2. 4.1172 km W of Adak, Alaska · 19050 days ago · 42 km deep · 67 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00007m4 (also filed as ushis3289, iscgem738738). Read Wed, Sep 30, 2026, 9:43 AM UTC.