M4.6 earthquake 193 km WSW of Adak, Alaska
A magnitude 4.6 earthquake struck 193 km WSW of Adak, Alaska on Sun, Aug 26, 1973, 4:11 PM GMT-10 (02:11 UTC), 51 km (32 mi) below the surface.
A larger quake followed: M4.9 190 km WSW of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1973-08-27 02:11:52 UTC
- Depth
- 51.0 km (31.7 mi), shallow
- Epicenter
- 51.285° N, 179.258° 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
- 10
Nearby
Within 100 km, magnitude 1.6 and up: 3 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.5187 km WSW of Adak, Alaska · 19394 days ago · 62 km deep · 25 km away
- 4.5202 km WSW of Adak, Alaska · 19393 days ago · 60 km deep · 15 km away
- 4.9190 km WSW of Adak, Alaska · 19382 days ago · 54 km deep · 2 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000037y. Read Fri, Oct 2, 2026, 12:48 AM UTC.