M5.2 earthquake 63 km S of Adak, Alaska
A magnitude 5.2 earthquake struck 63 km S of Adak, Alaska on Thu, Aug 16, 1973, 2:36 AM GMT-10 (12:36 UTC), 48 km (30 mi) below the surface.
A larger quake followed: M5.6 47 km S 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
- 5.2 (mb), moderate
- Local time
- UTC
- 1973-08-16 12:36:28 UTC
- Depth
- 48.0 km (29.8 mi), shallow
- Epicenter
- 51.300° N, 176.640° 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
- 48
Nearby
Within 100 km, magnitude 2.2 and up: 6 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.647 km S of Adak, Alaska · 19395 days ago · 62 km deep · 17 km away
- 4.037 km SSE of Adak, Alaska · 19395 days ago · 55 km deep · 36 km away
- 4.161 km SSE of Adak, Alaska · 19394 days ago · 47 km deep · 13 km away
- 4.661 km S of Adak, Alaska · 19394 days ago · 53 km deep · 2 km away
- 4.954 km S of Adak, Alaska · 19394 days ago · 51 km deep · 9 km away
- 4.779 km SE of Adak, Alaska · 19384 days ago · 40 km deep · 49 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000033f. Read Tue, Sep 22, 2026, 4:18 AM UTC.